Back Issues

If you would like a printed copy of any of our back issues, then they can be purchased on Farm Marketplace. You can also download the PDFs or read online from links below.

  • How To Start Drilling For £8K

    Clive Bailye’s seed drill of choice is his 6m John Deere 750A , which has been used exclusively for 3-4 seasons. Last year, with an increased acreage, the founder and publisher of this Direct Driller magazine thought a second seed drill was necessary. Having just the one machine was a risk and in a difficult season would mean drilling was delayed. He looked around and found a good condition Horsch CO6 tine drill advertised in Germany.

    Words and pictures by Mike Donovan

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    After delivery he rebuilt the coulters to a narrow profile so as to reduce soil disturbance. He says the tine drill is very useful driling after straw crops such as osr and also through the straw on second crop cereals.

    Buying the drill from a German farmer was not particularly complicated, and provided him with a higher spec machine than Horsh sell in the UK. The seed dart tyres are much wider, and the machine is fitted with blockage monitors as well as full width front packers and also a liquid fert application system.

    A sheaf of photos were taken, and Clive then asked for some of specific parts to show wear. The deal was done at under £5,000 which Clive says is the market value of these machines which are too large for small farmers to buy. Original owners like to buy new and sell when the machine is still in good condition.

    Narrow tines with wear tiles

    @Clive knew he wanted to make changes, substituting the Horsch tines and coulters for something far narrower, and has ended up getting his own design of tine made, which has a wear tile made from Ferobide, far harder than tungsten. The drill is on the farm primarily for osr and 2nd crop cereals drilled into chopped straw and the 25cm spacing is okay for these crops.

    Comments on Clive’s on-line forum, TFF, said the drill many not be so good with beans, as the slot is a mere 12mm wide. And in barley the spacing may well be too wide as it needs to be thick. Clive points out that the seed pipe can actually be a bit wider than 12mm as it is in the shadow of the point. It would be good to have the option of using it for beans.

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    Above left: The cheap CO6 is being calibrated ready for its first outing

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    Above right: The adapted Horsch is being filled by the home built drill logistics trailer with seed and liquid starter fert.

    Getting around the German instructions

    The Horsch came, of course, with a control box and instructions in German. More on-line discussion revealed that English instructions were available on the Horsch website, and another explained that Horsch was sourcing some of these parts from Agton in Canada anyway. Zealman from New Zealand explained that the button marked with callipers should be held down for around 5 seconds. The menu is where you adjust the tramline sequence, valve layout and row numbers.

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    Ball hitch is a continental standard and provides a positive connection between tractor and drill

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    The Stocks Wizard has a rotor modified for Avadex which otherwise leaks everywhere

    A Stocks Wizard is on the back of the drill and used for Avadex. Here again the knowledge of actual farmers is helpful. Alistair Nelson warned that the rotor and the surrounding shroud need to be changed, and he got good advice “from Rick at Stocks”. Clive has the same setup on the 750A and says that the Avadex leaks everywhere unless the modification is made. The drill was acquired and modified in 2016 and the results have been excellent.

    The machine went through the residue without many problems and having the second drill has meant more timely planting. Clive has shown that moving into No-Till is not the expensive exercise so many farmers think it might be. The total cost, after modifications which included replacing all tines and coulters, was under £8,000.

    Author Mike Donovan writes: we have featured a number of home made direct drills in @Practical Farm Ideas, and are always interested in seeing more. Please contact mike editor@farmideas.co.uk or 07778877514.

  • Drill Manufacturers In Focus…

    DESPITE EXTREME WEATHER OUR CROPS LOOK FANTASTIC

    Jeff Claydon, who developed the Claydon Opti-Till® System, discusses the progress of winter and spring crops on his family’s farm in Suffolk and how the TerraBlade inter-row hoe is used in conjunction with herbicides to help minimise weeds and diseases. This article was written during the first week of May, following the wettest winter since national records began in 1910 and a very dry spring.

    The COVID-19 situation has made consumers much more aware that food is one of life’s most basic requirements and not something to be taken for granted. It has also highlighted the complexity of the finely tuned supply chain which delivers a continuous supply of high-quality food to retailers’ shelves for them to purchase. This presents the farming and food sectors that have Farm Assured standard and Red Tractor status with a real opportunity to better inform and educate them on this critical topic.

    Continuous pressure from the supermarkets over many decades has forced food prices down in real terms, so as an industry we have had to respond by cutting costs and becoming more productive to remain profitable. But that has become increasingly difficult to do and going forward the situation will require careful consideration, because there is no point in chasing a low-cost system if yields are compromised as far more will be lost than saved. With profit margins under pressure, a shortage of skilled labour and more frequent extremes of weather, the financial risks attached to farming have increased substantially. Never has it been more important to operate an establishment system which is effective in all conditions and provides sufficient capacity to allow crops to be drilled at the right time, in the right conditions. Without those attributes it impossible to produce high yields and generate the financial returns necessary to farm profitably and sustainably.

    A challenging season for many

    This season’s extremes of weather highlighted the drawbacks of moving too much or too little soil. Many who relied entirely on a plough-based or min-till system are now questioning the relevance of multiple tillage operations, whilst the serious pitfalls of a no-till approach have been very evident. In both cases, less-than-ideal establishment, poor germination, and less effective weed control will ultimately reduce yields and profitability.

    I am pleased to report that this has not been the case on the Claydon farm, where the Opti-Till® System provides much-improved timeliness and flexibility. All our crops are established with a 6m Hybrid T6c which comfortably averaged 40ha a day, so all 280 hectares of winter wheat, beans and oilseed rape went in as planned in just 70 hours. The winter wheat was in the ground by 31 October and the last winter beans were drilled on 19 November. Wider crop rotations, combined with a 50:50 split between wheat and break crops, have helped to spread the workload. After harvest we had plenty of time to carry out an effective stubble management programme with our 15m Straw Harrow and 6m TerraStar. This encouraged multiple flushes of volunteers and weeds, any remaining green material being killed off with a single application of full-rate glyphosate in October/November. For spring crops this left fields clean but with a shallow layer of surface tilth which provided ideal conditions over the winter and prevented the surface from capping.

    We drilled the remaining 46ha of spring crops directly into this perfect growing environment at the end of March. Following a week of dry weather our spring oats went in on 24 March, the day after ‘lockdown’ started in the UK, even though the soil temperature was just 5.5°C and significantly below the 7°C average for January. In the four weeks that followed we had just one rain event and the 2mm which fell evaporated quickly. In early April there were more frosts than during the whole of the winter and these, together with very cold winds, stunted the oilseed rape.

    It is much shorter than normal, but prolific amounts of flowers and seed pods are evident, so plenty of sunlight will penetrate the canopy and hopefully help to ensure good yields. Without Opti-Till® our crops certainly would not be at the stage they are now. The system greatly improves timeliness, reduces establishment costs by up to 80%, creates well-structured, supportive soils, encourages high worm populations, promotes biodiversity, and ensures excellent drainage. This results in sustainable, high yields, greater resilience to extreme weather events, numerous environmental benefits, and improved profitability.

    The key is the Hybrid drill’s patented leading tine which lifts and aerates the soil, creating fissures that alleviate localised compaction, improve drainage, allow the soil to absorb heavy rainfall without capping and provide space for strong rooting structures to develop. The separate seeding tine places seed within the band of soil which has just been lifted and loosened, providing ideal conditions for rapid emergence, and encouraging strong rooting structures to develop.

    Drilling seed in bands provides an ideal environment in which worms thrive and because their burrows and capillaries are left undisturbed this aids drainage and water movement throughout the soil profile during growing season. Plant roots are also left largely undisturbed, which adds to the soil biota and improves its structure, organic matter depletion is minimised due to nominal soil disturbance, while moisture and nutrients are preserved. Setting any drill up correctly according to prevailing conditions is always important for optimum results, but it has been critical this season.

    In the autumn it rained almost every day and so we slightly reduced the working depth of the front tines to prevent the tractor’s wheels from slipping excessively in the extremely wet conditions. This also helped to maintain a reasonable forward speed and achieve enough soil shatter, without bringing wet sticky soil to the surface. In the spring, when the soil had dried out on the surface but remained wet underneath, we also ran the leading tine 6cm to 8cm below the seeding zone to draw up humidity into that area.

    Despite atrocious weather, with only three rain-free days from October until mid-March, crops established well and when I went around the farm this morning even the headlands looked exceptional. Our customers throughout the UK and overseas have reported that the Opti-Till® System has also produced excellent results. One of them called me to say that they had operated their 6m Claydon Hybrid around the clock to make best use of a period of dry weather in the autumn, drilling 80ha in a 24-hour period without the need for any form of precultivation.

    Tidying up in spring

    With all our winter and spring-sown crops in excellent order we have been making extensive use of our Claydon TerraBlade, a low-cost, mechanical method of controlling weeds growing between the rows in all combinable, band-sown crops. Keeping these areas clean during the early stages of crop growth reduces competition for nutrients, light, air, and water, enabling the young plants to grow strong and healthy, improving the availability and utilisation of soil nutrients and ultimately boosting crop yields.

    The TerraBlade is an additional weapon in the agricultural industry’s weed control armoury at a time when the efficacy of some herbicides is decreasing, and the cost of control is increasing. It eliminates weeds reliably, safely without using chemicals and clears up any that were missed by agchems, or where such products cannot be used. This greatly reduces the return of weed seeds, the overall weed burden and the risk of more resistant types developing.

    On farms that drill early, crops may be sufficiently well developed in the autumn to start using the TerraBlade then, and the operation can continue in the spring whenever soil conditions allow, up to the stage where the crop might be physically compromised by further passes.

    A trial by Agrii UK in an area where grassweeds had become problematic after years of conventional crop establishment found that a combination of Claydon stubble management and herbicide programmes achieved an exceptionally high level of control. In the area which received no treatment, Agrii researchers counted over 900 blackgrass seed heads per square metre. In the surrounding area, where a combination of ag-chem treatments, Claydon Straw Harrow and Claydon TerraBlade passes were used, the number was just 13/m2, a 98.5% reduction.

    The benefits of the Opti-Till® System are clearly resonating with farmers and this has been reflected in the high number of enquiries that we have received in recent weeks as many decide to revaluate their approach before the autumn. The COVID-19 lockdown meant that we were unable to welcome the hundreds of existing and potential customers who normally visit our open days in May, so this year we decided to film a virtual open day so that we could highlight just out well our soils and crops are looking. You can view it by visiting the Claydon website (www. claydondrill.com)

    To learn more about the Claydon Opti-Till® System and how to improve your farm’s performance contact your local Claydon dealer, go to www. claydondrill.com or call the Claydon office on 01440 820327.

  • Farmer Focus – Andy Howard

    A few weeks ago I was really falling out of love with growing wheat. Like all difficult times you get the chance to re-assess what you do and I believe we need a complete re-think of wheat growing in the UK. Since my last article in the December edition it continued to rain, about 680mm between the end of September and the beginning of March. The deluge gave us a final goodbye on March the 7th by raining all day and flooding the farm. It has been a difficult time watching crops go under water and springs appear and kill patches of wheat.

    Now we have having a very dry spring and crops are looking stressed due to poor roots systems. Please put your hands up if you farm on heavy ground and are relaxed about planting high seed rates of wheat at the end of October this year? Then (if its survived the winter) apply a fungicide 4 times to keep out disease, also apply large amounts of nitrogen fertiliser to try and meet milling specifications and finally spend £100/ha on herbicides to try and fail to control grass weeds. I cannot imagine many hands being raised. (apart from the input suppliers).

    Thinking of wheat bushes with 100 tillers

    While drilling spring crops I was listening to a podcast by John Kempf where he was interviewing Dr Norman Uphoff about The System of Rice Intensification. In developing countries, they have re-designed Rice cultivation with dramatic yield increases and lower input costs. This has been done by planting very-low seed rates, so each plant has plenty of room above and below ground and so rooting and tillering is increased. They use as much compost at planting as possible to improve the soil biology. There are other changes they made but these two mentioned are the most important here. Since their success with Rice they have transferred the theories to other crops including Wheat.

    So, I started to think how we could adapt this system to the UK and remembered about the Marc Bonfils method of wheat growing where he was getting remarkably high yields with similar techniques. I also remembered a picture of wheat shown by Neil Fuller where he had planted wheat at 10 plants per square meter and the plants had 100 tillers. In summary I believe we should be planting wheat as early as possible with very-low seed rates. At the same time apply compost or an extract at planting.

    This will give us wheat bushes with large root systems and many tillers which will find nutrients from deep in the soil and so require a lot less nutrition. Due to the open canopy disease will be less of an issue. This would ideally be on an already established permanent legume living mulch.

    Marc Bonfils was achieving 15t/ha with a similar system with very low inputs. So why didn’t it take off? My guess is scalability. The open canopy would give weeds more of a chance and they were probably hand hoed. With Weeder Robots on the horizon, interrow hoes and hooded sprayers this hopefully will not be an issue. I am also hearing people screaming “what about BYDV or Wheat heading in December?” My answer is a large healthy plant will not be attacked by aphids and variety choice is key. A lot of modern varieties have spring genetics within their genome. A variety with winter only genetics would have to be chosen.  

    Will it work? I do not know but it cannot be any worse than the direction wheat growing is going. I think we need to try. How good a wheat crop looks around here is directly correlated to how early it was drilled, the earlier the better. Marc Bonfils was planting his wheat into his standing wheat crop in June as wheat tillers best at 20-25 degrees Celsius. The table below shows the differences between the Bonfils Method and Conventional

    The spring crops overall established well. They are looking good considering the conditions, but they are rushing through the growth stages. We have 5 different intercropping trials in our spring crops. (pictures attached). 

    The bean intercrop trials are with PGRO. We are testing undersowing clover in beans, different row configurations to see if there any differences in disease and a copy of the bean/ oat seed rate ratio trial we did last year. With the Diversify project we are trialing different rates of oats mixed with either peas or lentils and see how low we can go and still get a good enough scaffolding to reduce lodging. All these trials should hopefully give us some valuable information for next years growing season which will hopefully be better than 2020!

    Happy harvesting.

  • Water Focus – Affinity Water

    New technologies for understanding the benefits of regenerative agriculture and cover crops

    Sophia Burke, AmbioTEK CIC, Mark Mulligan, King’s College London and Shaun Dowman, Affinity Water

    Affinity Water is a drinking water supply company in the south-east of England. Supplying water in an area designated as being under ‘serious water stress’, it is critical that the company manages its water resources sustainably now and into the future. When it rains, land management can have a big influence on the quality and quantity of water that reaches groundwater aquifers. Given that much of the land perched above the aquifers is agricultural, there is a great opportunity for water companies, like Affinity Water to work with farmers to better understand and enhance the benefits that good soil management can have for the water environment. Good soil health delivered through regenerative farming, no-till or conservation agriculture can offer many benefits such as increased water retention, improved infiltration, reduced run-off and less pollution. 

    Measuring the impact of soil management practices on the water environment can be difficult, especially when attributing effects upon, and rewarding, the actions of individual farms across a large catchment, but through field trials, Affinity Water have been developing their knowledge and understanding in this area. Affinity Water are utilising new technologies developed at King’s College London and installed and maintained by AmbioTEK CIC. In a number of small-scale field trials they aim to understand how regenerative agriculture and different cover crops can help reduce runoff and nutrient loss as well as the influence they have on infiltration and potential aquifer recharge.

    The measured soil moisture and rainfall for one of the sites is shown below (Figure 1). There is a clear soil moisture response to the measured rainfall, followed by a relatively rapid decline with drainage and crop water use. Measuring these parameters in real time on different cover crop mixes and comparing it to a plot left bare builds an understanding of the effect of cover crops on infiltration. Interestingly, the results from this year’s trials highlighted that very little water was ‘lost’ through evapotranspiration in the cover crop plots over the autumn/winter months. It is sometimes assumed that cover crops may ‘compete’ with the interests of a water company and will use water that may otherwise be directed down into the aquifer, but this study suggests that this is not the case.

    The results also highlight that a mustard/ oat cover crop may allow greater water infiltration when compared to a straight radish mix (Figure 2). Further work is needed to confirm this. 

    How can new IoT-linked monitoring technology be used by farmers in the future?

    Landscapes of the future will be intensively monitored in real time by farmers, companies, environmental authorities and governments with the aim of improved management and early warning to the benefit of all. Internet-connected technology is already transforming our knowledge of soil, water, climate, food production and the production of public goods (ecosystem services), which are nature’s contributions to people provided by farmland. Regulators and legislators are looking to incentivise management for improved provision of public goods, such as clean water and carbon.

    However, there are still challenges in understanding which public goods land provides to whom, how this varies spatially and over time and how management practices (such as tillage, choice of cover crops) impacts upon them. We can understand a lot by combining satellite data with computer models but these need to be combined with networked on-the-ground sensors such as FreeStations, collecting sitespecific detailed data.

    Land provides both private goods for the market through the produce grown but also public goods in the ecosystem services provided. For example, changing land management will affect how much of the rainfall can infiltrate for use by the crop, and how much is ponded on the surface, which generates runoff, nutrient loss and soil erosion, and can also contribute to flooding downstream and to dry season flows. Since these services have real benefits to local, downstream and even global populations, public funds can be put to sustaining their provision whilst private funds underpin the markets for farm produce. If internet connected sensors, coupled with satellite remote sensing can quantify how land management on a farm mitigates flooding or drought downstream, or provides clean water, carbon or any other valuable ecosystem service this can contribute to more targeted payments for environmental land management 

    What do farmers want to monitor / measure on their land?

    At present FreeStations measure soil moisture (with multiple probes at different depths), soil temperature, water quality and weather (rainfall, temperature, solar radiation, wind). Are there other variables you consider critical? If you are interested in installing or even building a DIY FreeStation, please check out www.freestation.org or contact us at sophia.burke@ambiotek.com.

  • Investment In Manufacturing And Knowledge Is Helping Make Ammonium Nitrate Fertilisers Fit For A Carbon-Focused Future

    The carbon footprint of all agricultural practices is under the spotlight as never before, and with Nitrogen fertiliser one of the mainstays of production, it is not surprising much debate continues around the use of manufactured N.

    Navigating through the often conflicting demands of population growth, food production needs and environmental requirements is far from easy, says Dr. George Fisher of CF Fertilisers.

    “It’s a balance between using Nitrogen as efficiently as possible onfarm to produce the food we need, whilst making sure this is done in such a way to limit harm to the environment with products that are manufactured as cleanly as possible. “Over the next 50 years global population will increase by 30% to 9 Billion people, food production will need to double to feed an increasingly hungry world and the demands placed on farmers and growers will be unprecedented. “Yet, all this is happening against a backdrop of growing awareness of the need for us all to limit our impact on the environment, cut back significantly on greenhouse gas emissions and manage the world’s finite resources more carefully. “And with climate change reducing the area of land in temperate areas where current food crops can grow, the need to achieve the highest food production efficiency from every hectare possible will be greater than ever.

    Fertilisers can double crop yields

    It’s an unavoidable fact that over the last 60 years, Nitrogen application has driven the food production revolution, Dr Fisher says that, without fertilisers, the world would only be able to feed about half of its people. Modern fertilisers can double crop yields.

    Research data from trials

    In practice, fertiliser is a crucial element to achieving profitable crop yields. CF trials consistently show optimum N applications producing over 5.0t/ ha more wheat compared to zero N application plots. “For example, in milling wheat trials carried out by arable research contractors Armstrong Ltd, applying zero N to trial plots produced 4.2 t/ha whereas applying the optimum N rate of 254kg N/ha produced 10.4t/ha. “Whilst optimum N rates are key, the type of fertiliser used can also have a profound effect on how it is utilised by plants. “It’s important to ensure that as much as possible of every kg of Nitrogen fertiliser applied ends up in plants to produce food and is not lost from the system in terms of leaching or loss to the air.”

    Nitrogen fertiliser use efficiency (NfUE) critical metric

    The Clean Air Strategy 2019 has focused peoples’ minds on Nitrogen fertiliser use efficiency (NfUE) with a suggested move away from urea to Ammonium Nitrate (AN) or inhibited urea products to reduce Ammonia emissions, he explains. “NfUE gives growers a clearer picture of the impact their fertiliser choices are having on their production efficiency and can highlight where potential environmental concerns might result. “In simple terms, it allows us to review the amount of Nitrogen applied to crops and calculate how much is actually recovered by the crop. “Efficiency values for crops typically range between 50% to 80% but it is clear that better quality, AN based solid fertilisers are at the top end of this scale whereas urea-based products, including liquids and blends, tend to be at the lower end.

    ” In independent trials, Nitram (34.5% N) outperformed straight urea in terms of NfUE across all trials conducted in two very different production years and at all yield levels, Dr. Fisher points out. “Looking at the data from six trials shows an average NfUE for the AN of 74% compared to 66% for urea. “This difference of 8% NfUE is the equivalent of an additional 16% total loss of Nitrogen from urea and in crops. With an application rate of 200kg/ha N this would be equivalent to a loss of 32kg/ha N.

    “In other words, using Nitram resulted in crops recovering an extra 16% or 32kg/ha N than they would have done with the same application rate of urea.”

    Even in 2018 when poor weather meant all treatments on all trials had a relatively poor recovery of Nitrogen, Nitram still outperformed urea, he says. “NfUE analysis dispels the continued sentiment that whilst urea volatilises N to the air, AN leaches to groundwater so the overall environmental impact from both products is similar. “It’s just not the case. The N losses through volatilisation from urea are far greater than any perceived losses with AN through loss via the soil. Urea has the potential to leach nitrate-N via soil processes in addition to losing N as ammonia. “Even with inhibited urea-based products designed to reduce loss of Ammonia to the air, volatilisation is still an issue.”

    Trials underline AN benefits

    High quality Ammonium Nitrate (Nitram – 34.5%N) achieved an average Nitrogen Fertiliser Use Efficiency (NfUE) of 70% compared to 60% for UAN and just 63% for UAN treated with the latest polymer-based inhibitor products, in ADAS trials carried out in 2019.

    In practical terms, the better NfUE from Nitram AN produced an extra 0.4t/ha of milling wheat over crops using a urea fertiliser as their only source of Nitrogen in trials carried out by Armstrong Ltd. At all fertiliser rates, Ammonium Nitrate (AN) outperformed, explains Dr. Mike Armstrong. “There was a significant yield advantage in favour of AN across all plots in the trial. Even where urea was used as an early application and then followed by AN, there was a 0.25t/ ha drop in yield compared with crops given all their Nitrogen as AN.

    “We wanted to look at all possible scenarios of urea use versus AN so as well as a direct comparison of the two, we also wanted to test the idea that urea can be a safe, lower-cost early application. “An application of 50kg N/ha of urea was applied in these instances with remainder of the fertiliser application being made up of 34.5% Nitram AN.” A range of application rates up to 360kg N/ha were used with the optimum rate found to be 254kg N/ha. “At this rate, the AN crops were producing 10.3t/ha whilst the urea ones were at 9.9 t/ha.” 

    Major steps in manufacturing efficiency

    While focusing on choosing the right product to maximise NfUE and reduce loss on N to the atmosphere another key component is the carbon footprint of manufacture, CF Fertiliser’s’ director of public affairs Debbie Baker points out. “For our part, we’ve made major steps in reducing the greenhouse gas emissions associated with our fertiliser production, worked hard to produce accurate carbon footprints for all our products and made significant steps forward with recycling throughout all our processes.

    “CF Fertilisers has over 50 years experience in production and supply of the highest integrity fertiliser products. We manufacture Ammonium Nitrate (Nitrogen) Fertilisers at our sites at Ince in Cheshire and Billingham in Teesside. At Ince, we also combine Nitrogen with the other plant nutrients Phosphorus, Potassium and Sulphur to create true granular compounds that meet the wide variety of soil type and crop requirements found in the UK.” 

    Sustainable Nitrogen Production

    Of the four million tonnes of Nitrogenbased fertiliser products used in British Agriculture every year, with CF manufacturing and supplying up to 35% of this. “You can’t get away from the fact that fertiliser production is an energy intensive process,” Debbie Baker explains. “But over recent years CF Fertilisers has invested heavily in ensuring that our manufacturing is as efficient as possible and has the least impact on the environment. It’s an area we are committed to investing in for the longterm too. One such investment has been to install state-of-the-art nitrous oxide (N2O) abatement technology on the nitric acid plants at Billingham. “N2O is an unavoidable byproduct of nitric acid manufacture and is a significant greenhouse gas.

    The nitric acid is a key base for Ammonium Nitrate production. Over the last few years, we’ve invested £9M in our manufacturing facilities to reduce our production of N2O emissions by 3000 tonnes every year. “As a greenhouse gas, N2O is 300 times more powerful than CO2 in terms of it’s effect on the environment, so that’s equal to 900,000 tonnes of CO2 . “This is equivalent to the whole of the 30% CO2 reduction required by UK agriculture by 2022, so it’s a sizeable amount and indicative of the effort and resources we have put in to make sure our own production is as sustainable and environmentally acceptable as possible. “All told we’ve reduced the carbon footprint of Nitram production by 40% since 2010.

    Working with the Carbon Trust

    To make the major improvements in manufacturing and emissions reduction as practically useful as possible to customers, CF has produced businessto-business (or cradle to farmgate) fully audited and certified carbon footprints for its entire range of fertilisers as well as the ammonia and nitric acid used in the manufacture of its Ammonium Nitrate. To ensure these carry maximum credibility and are readily recognised by everybody as 100% independently verifiable, the company took the decision to work with the Carbon Trust to achieve this, Debbie explains.

    “Not only does this mean they have undergone rigorous independent scrutiny, they have also been calculated using the standards set out in the robust and internationally recognised PAS 2050 protocol. “The resulting footprint represents the true carbon emissions for fertiliser production from the raw materials right up to delivery to the farm gate.” CF Fertilisers product carbon footprints were first certified by the Carbon Trust in April 2013 and are reassessed every two years. The footprints for process chemicals are expressed as kg CO2 e per kg of product, whereas fertiliser products are given as kg CO2e per kg Nitrogen (N). “Fertiliser usage in on-farm Nutrient Management Plans is considered on the basis of N requirement, so this approach allows the simplest comparison between our products for a given crop requirement. 

    “The process doesn’t end there, though. In using the carbon reduction label, CF Fertilisers has promised to reduce the footprint for process chemicals and Nitram, demonstrating an ongoing commitment to carbon reduction.”

    On farm benefits of carbon-focused thinking

    The investment in manufacturing, research and knowledge sharing is starting to have real benefits for farmers moving forward, says Dr. Fisher. “Emerging legislation, such as that coming out of the Clean Air Strategy, will make using urea increasingly difficult in the future and with its use being very dependent on the weather, it also puts a much greater element of risk into your business. “Every producer, whether livestock or arable, should now carry out and follow a Nutrient Management Plan and Carbon audits will become increasingly important in the future.

    “Some milk buyers are already asking their suppliers to provide this information and one of the biggest elements of this is your fertiliser use. “It’s something we have been aware of for some years now and whilst the international standard figure is 6.6kg of Carbon for every 1.0kg of N you use, with CF Ammonium Nitrate (Nitram) it is almost half this at 3.4kg for every 1.0kg of N used. “This is a result of the investment we have made in de-carbonising the manufacturing process.”

    Little and often applications improve fertiliser use efficiency

    Little and often applications of Nitrogen can boost milling wheat yields by nearly 0.4t/ha without causing dilution of grain protein content, new research from ADAS is suggesting.

    While yield from 260kg N/ha applied as four applications at one site produced a yield of 11.73t/ha, this rose to 12.11t/ha with the same grain protein content when the same amount of fertiliser was applied as seven applications, explains ADAS crop physiologist Dr. Kate Storer.

    The trials were carried out in Terrington, Norfolk, and Wharram-leStreet, Yorkshire. The Norfolk site was on a silty clay loam with the variety Skyfall after oilseed rape whilst the Yorkshire site was on a silty clay loam over chalk, using the variety Elicit after beans.

    N-Min soil testing was carried out to ascertain soil N resources with a total Soil Nitrogen Supply (SNS) of 92kg N/ha recorded at Terrington. N-Calc was then used to produce an estimate of 260kg N/ha applied N would be needed to achieve yield and quality targets. Fertiliser was applied as high quality Ammonium Nitrate (Nitram 34.5%) with the standard plots receiving an initial application of 50kg N/ha on 22 February followed by further applications of 80kg N/ha at GS 31, 80kg N/ha at GS 32 and a final one of 50kg N/ha at GS 37/39.

    The L&O plots received an initial application of 25kg N/ha on 22 February followed by a further application of 25kg N/ha in early March and then four applications of 40kg N/ ha at GS 30, 31, 32, 33 and a final one of 50kg N/ha at GS 37/39. The second trial at Wharram-le-Street in Yorkshire used a similar approach with a lower total N application of 230 kg/ha over six splits, she explains. “The L&O timings were designed so that they fed the crop as it grew and avoided excess N in the soil early in the season. “At Wharram-le-Street the dry conditions after some of the later L&O applications may have delayed N uptake in those plots, with lower Normalised Difference Vegetation Index (NDVI) values seen in the L&O treatments, but there was no negative effect on yield.

    ” That said, at harvest, analysis showed there was a trend for higher NfUE in the L&O plots at both sites. It is likely most of the additional N uptake in the L&O crops took place as they were actively growing in spring and early summer, Kate Storer believes. “There was an increase in N straw concentration in the L&O plots suggesting the greater N uptake efficiency resulted from more N being taken up by plants during stem extension and ear formation.

    “As well as improved production opportunities, it is possible the greater N uptake from the L&O approach may also reduce the risk of nitrate leaching during the following winter, so there are potential environmental benefits too.”

  • Innovative Farmers Living Mulch Field Lab

    By Jerry Alford. Innovative Farmers and Dominic Amos, Organic Research Centre

    This Innovative Farmers project brings together organic and conventional notill farmers to investigate the potential for implementing a long-term system with the aim of maintaining a perennial living mulch of white clover whilst growing an annual combinable cash crop. The benefits are widespread, from reduced inputs for conventional farmers to a reduction in cultivations for the organic farmers in the group. This is where the trial is most fascinating because it Is a coming together of two farming systems who want to get the best out of their systems, whilst using the best of other people’s systems.

    Organic farming is well known for having a set of principles based around a systems approach with minimal external inputs and conservation ag also has a set of principles it adheres to, being diversity, cover crops and minimal soil disturbance. The trial combines these principles and with sponsorship by Organic Arable, research input from The Organic Research Centre, technical advice form Cotswold Seeds and coordination from AHDB it is a trial that has a broad base of interest.

    The basis of the trial is a permanent clover understorey which provides mulching, fertility and soil protection into which annual combinable crops are planted. There are two very important services the mulch will provide; weed suppression and nitrogen accumulation. In addition, the system should enhance soil physical characteristics, selfregulation of pests and diseases and increased biodiversity, both above and below ground. The living mulch system makes use of practices already common with cover cropping and elements of intercropping including undersowing and relay cropping. There are 6 farmers involved, farming from Shropshire to Suffolk, organic and conventional and each have different soils, systems and equipment. The one similarity is they are all using the same clover mix of 70% wild white and 30% medium leaf white clover as the understorey mix supplied by Cotswold seeds.

    The Innovative Farmers programme takes farm trials already being carried out by farmers and introduce more structured experimentation to merge science and practice. It also brings groups of farmers together to create more of a “collective experiment” To that end the farmers will all grow the same mulch and should all include a control plot that represents current standard farm practice. This will provide a relevant comparison for agronomy, production and economics allowing new conclusions to be drawn about the effects of the new living mulch system. Without controls, effects on crop yield or weed control cannot be established. Data will be collected from living mulch and control plots at key times over the next two growing seasons and will constitute measurements of cash crop, cover crop and weed biomass, and soil mineral nitrogen as well as yield and grain quality supplied by the farmers. Establishment of the clover has been difficult and variable this spring with the very dry April and May. The clover will be monitored and following harvest this year may require a “top-up”.

    As this group of farmers has developed, the amount of experimentation that has already been carried out has become apparent with one of the organic farmers growing cereals with a trefoil understorey for some years. For him, the slightly lower yield that has been achieved has been balanced economically by the ability to grow more combinable crops in his rotation without so many fertilitybuilding breaks and a slight increase in the protein content of the triticale. Another farmer has tried wheat sown into a mulch of either red or white clover with rye grass which ended up offering too much competition with the cereal and the trial was eventually taken as a wholecrop for silage. For other organic farmers, undersowing has been a feature for many years and in long term organic systems, white clover is a common ‘weed’ and so it makes sense to utilise it rather than fight it. Direct drilling into a grazed off ley has been a common organic farmers experiment, but often with mixed outcomes.

    For the conventional farmers, reduction in chemical inputs, particularly nitrogen, are an important consideration with the drive for zero carbon farming putting fertiliser inputs in the firing line. Profitability rather than production at all costs being an important factor in their business planning. This means conventional no-till will have both economic and environmental drivers to reduce inputs.

    For others, attempting to get something out of a disaster has led to an opportunistic undersowing experiment. Field lab member Marcus Struthers from Courteenhall Estate,Northampton, explains -We had a failed WOSR field (7ha) last year which we drilled with white clover and took it through till the autumn with fantastic establishment. This we drilled directly into it around December time, which was later than we wanted but the weather held us back, surprisingly though this field has been looking the best on the farm all season, with minimal inputs and only the 2 chemical passes to date. Due to the results we have seen this year, with a relatively small area we have increased it this spring under sowing 35 ha of Spring Barley with white clover and another 11.5ha with a clover and black oat mix.

    For us it is an exciting time, being able to cut chemical applications, introduce rouging where necessary, weed suppression, increase soil health etc.

    The different farmers in the group are also seeing different potential problems, and the benefits of an interactive approach using webinars (due to Covid-19) and WhatsApp has allowed discussion.

    The wet autumn and winter of 2019/20 have delayed this trial from its original start date and so we are just at a start-up stage, with the dry spring affecting mulch planting. Again, different experiences come to play with a more relaxed view from organic farmers who are used to undersowing but are also used to not doing anything to growing crops when they are drilled. Different techniques are also apparent here with some mulches direct drilled into existing crops, and others drilling with spring crops following rain. In one case the clover is being grown under a buckwheat crop, which is itself an experiment.

    Following crops will mainly be wheat or oats, although any combinable crop including maize, can in theory, be used. However, the most vigorous and competitive winter crops such as rye or oats may make most sense particularly in the early stages of the new system as this will maximise the competitive ability of the crop against both mulch and weeds. Research indicates that it may take a few seasons for the new system to bed in and in terms of nitrogen cycling and crop availability, this looks to be higher in the second season.

    The difficulty will be reducing competition on the germinating crop at the critical seedling period. Research shows that the dominant biomass when growth starts in the spring tends to be the winner, and so a relay cropping type approach is envisaged with the autumn crop being drilled as the mulch slows its growth due to reducing temperatures and day length. The key here is that a winter cereal will continue to grow through this period, tillering and developing its root system whilst the clover remains dormant. This may explain why the organic farmers who grazed their direct drilled crops off in the winter had mixed results. The concept of critical weed free period (i.e how long weed competition needs to be absent in order not to reduce grain yield) has been well established for decades.

    The key to achieving a functional living mulch system with a tolerable yield reduction will involve maximising the competitive ability of the cash crop while selectively weakening the cover crop at key stages. With the mulch mix already selected for its complementarity as an intercrop, the organic farms have only cash crop species selection, drilling date and drilling method to influence the cash and cover crop dynamic. Of course with herbicides and nitrogen fertiliser, conventional no-till farmers have two additional tools at their disposal to help hand the competitive advantage to the cash crop, boost yield and control weeds if the mulch doesn’t offer enough of the service provision the farmers are looking for, namely weed control and N-accumulation.

    For the experienced no-tillers, weed control is not seen as an issue because experience says that minimal disturbance leads to less weeds germinating whereas the organic farmers see a strip till type system being advantageous, possibly keeping mulched and cropped strips in the fields to minimise competition to the future crops. Certainly, research has shown that the longer the mulch can be kept from the base of the cash crop, the lower the yield reduction will be. Providing a channel for the growth and development of the crop at least during the foundation and early construction phases is likely to be important with the clover a stolon former it will close in any gaps and provide full groundcover by harvest. One of the benefits of an established perennial mulch may be improved trafficability and one of the farmers involved is considering a spring wheat like Mulika drilled in January that will give enhanced early vigour and establishment to grow away from the mulch before it gets going in the spring.

    Control of the mulch growth is a key component of the trial and there are 2 stages which are important, prior to or just after drilling and during the spring when the crop will need to gain both water, and nutrients, in direct competition with the clover. One area being looked at is the possibility of mowing between rows (cf. inter row hoeing) to mulch the clover but there are crimpers and rollers being used elsewhere which achieve the same objective. It is important to release some of the nitrogen produced by the clover at times when the crop needs it, because clovers do not release the nitrogen without a reason and will stop producing nitrogen if there is too much available. For conventional farmers there are chemical, including fertiliser, options to manage the clover mulch but these are not possible for the organic farmers.

    Autumn grazing with sheep is seen as the preferred option for those farmers with livestock but mulching the crop, crimping or rolling on a frost are alternatives that will suit stockless systems. The advantage of the living mulch approach is that there is no soil disturbance to stimulate weeds and the living plant will continue to suppress further germination. There are obviously potential problems, and areas where we need more knowledge-what about grass weeds and in particular blackgrass? What about perennial weeds? And what effect will the mulch have on crop yields and will the economics only work with organic prices. These can only be resolved by research and this is where the Innovative Farmers field labs are so effective, small scale projects which test hypotheses and look on tramline or plot scale with researcher input in trial design, data collection and interpretation.

  • Farmer Focus – Tom Sewell

    Well first things first! I just re-read my last article and how things have changed in just a few months! In many ways the whole world has changed. Since writing my last article on the 25th February the whole country has entered lockdown, the rain has stopped falling from the sky (although its been wet here today on 10th June!) and the memory of Caroline Flack calling the world to “be kind’ is a long distant memory in the year like no other.

    I’m not sure we have ever had two completely contrasting periods of weather back to back as we have done this past 8 months. From wet and flooded to baked-out, rock hard fields this season has been difficult and challenging. Once the weather did start to dry the fields we made a start with spring planting beginning with some winter beans that we sowed in the spring to finish a block where the weather stopped us last November. We have treated these as a cover crop that we may harvest. Having something growing is certainly better than bare stubbles and although only short, the recent rains may help them see the combine rather than the drill next into the field!

    We moved onto a block of spring barley next that we planted into a cover crop that had been grazed by sheep over the winter. In hindsight we were probably a few days too early as the soil was still a little tacky and we can see far better establishment and crop development where the tractor tyres mineralised some nitrogen and the crop got away quicker. Perhaps a year for a low disturbance tine drill over a very low disturbance disc?!

    We also drilled spring oats, spring wheat, spring barley and spring beans for contracting clients which has generally worked well. The Novag drill that we have here for demonstration and evaluation arrived a week after we finished drilling so has just been hitched up to the tractor and parked in the shed since. I did get it out alongside the crossslot today to compare the two machines. Having not used the Novag yet I obviously can’t comment on its performance but I can make some observations about build quality, spec and initial thoughts.

    You can see from some of the photos here that there are many similarities and a few subtle differences between the two machines. The cross slot was built on the farm 7 years ago, with the help of Paul and James Alexander at Primewest, and has been faultless since then with wearing metal being the only thing we’ve had to change in that time. It’s a 21 opener machine running at 225mm/9” rows giving an operating width of 4.8m. We generally operate at around 10kph and its pulled with a 300hp JD8520. One of the real benefits of the Cross Slot is that it folds to 2.5m for transport so it’s the same width as a grain trailer! When folded it has all of the openers on the vertical, so maintenance is both safe and very easy, particularly when changing discs and blades. Our drill has a seed only hopper that holds 2 ton of wheat seed. The build quality is superb, very heavy duty, well made and will last for many years.

    Initial impressions of the Novag are that it is a superbly finished and presented drill. The machine we have been sent is a 25 opener drill on 250mm/10” rows with both seed and solid fertiliser tanks which will drill at 6.25m. There are also 2 other hoppers. One for slug pellets that are spread behind the drill from 4 outlets and another hopper for small seeds which can be metered into the Venturi and planted with seeds in the large seed tank.

    At 3m wide the drill is wider and more imposing. Some of the openers remain in the horizontal position when the drill is folded but the hydraulic wing hooks that automatically secure the wing sections as the drill is folded are a thing of beauty! There is also a function on the drill which enables some of the openers to be lifted to reduce the operating width. This could be useful for steep fields and where tractor horsepower and traction is limited and is a very good feature in what looks like a superb machine. It will be very interesting to see it perform in the field after this harvest. The machine will be available for demonstrations around the country, organised by Clive Bailye, so please contact him if you’re interested in seeing it at work.

    Speaking of drills we have also added a low disturbance tine drill to our fleet! A 4m Horsch sprinter on Dutch openers will give us another option and some back-up with more land and more contracting coming up. As we all know timeliness and good planting conditions are essential with no-till and I’m not sure any of us have too much capacity?

    With the farm looking the most variable I’ve ever seen it the coming harvest will be one to forget I think. We do have some lovely looking Extase as a first wheat and a few November sown winter beans but oilseed rape has been an expensive disaster this year and a crop that we wont be growing next year. Coming up with a balanced rotation going forward will be a challenge and I’m sure I’m not alone in that?!

    Can I wish you all a very safe harvest both for you, your families and your staff.

    I wonder how things will have changed the next time I write?!

  • Drill Manufacturers In Focus…

    DRY SPRING HIGHLIGHTS CLEVER DRILL DESIGN

    The Mzuri system is widely recognised as Europe’s principal one pass strip tillage system, unrivalled in cultivation, reconsolidation and seed placement accuracy. Ben Knight demonstrates why.

    As Mzuri’s farm manager and knowledge exchange officer, I get to see a lot of Mzuri drilled crops around the country as well as those established by conventional and min-till methods. One thing that has struck me this Spring is how well Mzuri Pro-Til established crops have coped with the relentless dry weather.

    On the Mzuri trial farm, the jovially named ‘Peopleton Umbrella’ struck again and saw us with no measurable rain since the Cheltenham festival. Thankfully, the Pro-Til’s ability to cultivate, reconsolidate and seed into the perfect nursery seedbed, surrounded by structured soil, gave us the edge when it came to preserving moisture and supporting crop growth sans rainfall. Despite this, both our Winter and Spring crops look well and benefited from rooting into moisture, preserved by previous crop residue and have gone on to produce, healthy viable crops.

    However, you don’t have to go far to find crops that weren’t so lucky. I’ve seen both conventional and min-till crops in surrounding areas struggle with the drought from a combination of either moisture loss at drilling, or a lack of sufficient seed to soil contact and poor reconsolidation.

    This is why I can see the value in the ProTil’s cleverly designed features that allow us to prepare and seed into the perfect nursery seedbed, without compromising establishment or soil health. It is the collection of unique features that are laid out below and overleaf that makes the Mzuri Pro-Til an incredible tool for consistent crop establishment across a range of seasons.

    I’m pleased to see so many Mzuri users reaping the rewards of the Pro-Til’s clever design and what is proving to be a reliable crop establishment system time and time again.

  • Weed Suppression With Cover Crops: It’s All About Biomass

    Written by Dr. Bob Hartzler and Meaghan Anderson of Iowa State University

    One important benefit of cover crops to our production system is providing an alternative selection pressure on weed populations. Cereal rye has the best potential to suppress weeds because it accumulates more biomass than other cover crop species. Weed suppression is closely related to the amount of biomass at the time of termination (Figure 1).

    The importance of biomass on weed suppression can be easily observed in a demonstration evaluating suppression of waterhemp by cereal rye developed for the 2020 Farm Progress Show. Treatments represented no cover crop, an early termination when rye was 6-8 inches tall (900 lb/A), and late termination when rye was flowering (10,000 lb/A1). Three weeks after planting there were dramatic differences in both waterhemp emergence and growth (Figures 2-4).

    The low rye biomass treatment reduced waterhemp growth more than it did emergence, whereas the high biomass treatment dramatically reduced both emergence and growth. Waterhemp emergence was delayed more than two weeks in the high rye treatment compared to the 0 and 900 lb rye treatments. In the high residue treatment, \c seedlings had to navigate through an inch of mulch to reach full sunlight (Figure 5).

    Hypotocotyl needed to elongate 1.25 inches to get through the rye mulch.

    Many factors influence the biomass produced by cereal rye, most important are planting date and termination date. Rye’s tillering ability reduces the importance of seeding rate except in situations with late planting. A minimum seeding rate of 1-1.5 bu/ac is typically recommended. Increased seeding rates will provide more consistent stands when rye is seeding using an airplane or other broadcast methods, as well as when seeding occurs in October or later.

    For most farms, cover crops provide an opportunity to achieve more consistent weed control and lower selection pressure for herbicide resistance, rather than allowing significant reductions in herbicide use. Farmers desiring to reduce herbicide use must manage the cover crop to maximize weed suppression. Target early seeding dates, typically before late September. Seeding with a drill typically results in the most consistent stand across crop fields. Termination timing should be delayed past mid-May to ensure rye biomass is maximized for the most persistent weed suppression.

    110,000 lbs/A of rye biomass is higher than typically achieved in Iowa. The rye was drilled after harvesting corn for silage, and termination was delayed until mid-May.

  • Farmer Focus – Clive Bailye

    If I was ever to write the script for a farming based horror movie I think the title may simply be “2020’’ ! Last time I wrote it was December 2019 and we were only 60% through our autumn drilling campaign. Well behind our usual planned October finish. The new 12m Horsch Avatar had been parked up and our farm workshop Co6 and front hopper tine drill was working in any available dry spell to complete the remaining workload. The Avatar coulter had been impressive in the unusually wet conditions, not blocking in conditions where I’m sure our 750a would have but ultimately its limiting factor was the weight of the seed cart on wet soils.

    With a full 12/36m CTF system in place here any soil damage caused by weight on wet, fragile, soils is at least confined to a known and small % of the land which, if necessary, can be targeted to repair. However, repair means soil disturbance I would rather not do so the lightweight and balanced CO, able to run a low tyre pressures seemed the better choice in the extreme conditions. Also of note was the correlation between how long a field had been farmed under conservation agriculture principles and ability to drill, the longer term soils not only able to carry the weight of establishment machinery far better but far less prone to smear against the disc of the avatar or the tine of the C0.

    Despite lacking the versatility of a disc when it comes to dealing with huge amounts of green cover and surface trash, on our soils a tine is better when soil is wet, and the less consolidated surface seems to give better establishment later in the season. Over the years of evolution of our tine drill we have experimented with various tine solutions. When first converted we used the Metcalfe points, I was attracted by their narrow profile of just 12mm and low price tag compared to others but quickly found on our stoney soils that the tungsten wear tile would often break off long before the point was worn out and that narrow profile led to very rapid seed tube wear and issues flowing larger seeds like peas and beans.

    I set about creating my own modified version, initially this was just a wider version (15mm) using a Ferobibe wear tile that could be replaced with a farm workshop Mig welder. Unlike the tungsten, soil flow still created wear issues with the seed tubes so later protective side plates were added but I was never 100% happy with the design.

    In 2019 I had the opportunity to try some Bourgault VOS openers, initially we fitted the twin row 100mm points, the quality was impressive and they worked well but 100mm was too much soil disturbance for my liking so we moved to the 19mm single shot point which seem absolutely perfect, low disturbance yet wide enough to flow even the largest of bean seed and with no seed tube to wear with it being internal to the point. I think this will be the solution we stick with going forward, they were pushed to the limits this year in conditions I hope to never see again, in combination with the Horsch Partner front hopper I think they were the only reason that on February the 15th we finally managed to complete 100% of the “autumn” wheat and bean establishment workload.

    Having the right tools for the job and the right soil is only part of the picture, without the commitment, skills and tenacity of good staff no farming system can ever be successful, The herculean effort made by everyone here this season was exceptional, they worked at every available opportunity, safely and efficiently with their usual attention to detail. The sense of achievement by all, against the odds and conditions felt like sweet victory making the second part of this horror story even harder to swallow …

    Despite the difficulties of autumn at least our OSR area all looked good, locally a lot of crops had been destroyed by CSFB not long after drilling, yet ours had all made it through winter and although not exceptional looked ‘alright’. As soil temperatures warmed and first nitrogen was applied though it became clear all was not good. Closer inspection revealed stems badly infested with CFSB larvae, there was no way the crop was going to yield, although hard to accept it was a write off and clearly best replaced with a spring crop of linseed creating a significant increase to our spring workload but at least with our low input, low risk approach to OSR the financial impact of losing the crop was minimised with just farm saved seed, a herbicide and 1/3rd of the nitrogen applied we can simply call it a cover crop and move on !

    The future of OSR on this farm is doubtful, we seem to have got away without CSFB issues longer than some but it was inevitable it would hit us eventually, pests do not respect farm boundaries or hedgerows so regardless of IPM or soil health on individual farms there is nothing an individual farmer can do to remain immune to this problem.

    Unlike many I believe the ban on neonicotinoids is not entirely responsible for this issue. In fact, I think this is a clear example of how unsustainable modern agriculture has become when an entire crop can seemingly no longer be grown. The blame in my opinion for this loss sits firmly at the feet of poor rotation, agronomy and often blatant, historic, disregard of IPM. Afterall I am certain the Romans who bought this crop to the UK farmed without seed dressings and pyrethroid. Yet in just one generation we seem to have made something possible for thousands of years, impossible. If that doesn’t make you question the overall direction of modern farming and its impact upon our environment, then it should, what crop will we be crossing off the options list next I wonder if we don’t change? Blackgrass problems anyone?

    In mid-March the rain that had started on September 20th finally stopped rather ominously on Friday 13th of March. A total of 580mm had fallen through that time and only 8 days had no rainfall at all making it even more remarkable that we had somehow got that autumn workload complete. Soils started to dry, and we were soon able to get the spring crop establishment completed in good time and condition. Grateful to finally get some dryer condition to work in establishment was quick and simple compared to the trials and tribulations of the winter. We joked about a drought …….. and then it happened!

    It was 82 days later, on June 3, when we had our next rainfall. At this point the wheat was almost dead. Tillers had been dropped and yield potential irreparably capped, spring crops had emerged and developed slowly, I think in some cases had we cultivated to establish them they maybe never have emerged at all. The farm really did not look great, the only consolation being a country in covid 19 lockdown at least I didn’t have to look at it very often!

    I’m the first to criticise farmers for moaning, let’s face it, if you can’t deal with unfavourable weather then farming probably is not the best occupation to choose. I prefer to focus on things we can control as managers rather than things we can’t. I chose to accept this season as a challenge, if you can win a game of poker with a bad hand then surely you can still make a margin growing crops with bad weather?

    The simplicity of the low fixed cost structure business I have set out to build suddenly felt more prudent that ever with a small payroll and machinery fleet to finance the next focus was on adjusting the variable costs to fit potential.

    Fortunately we had applied 60% of the planned N to our wheat early, as the hot, dry conditions persisted it was fear of scorch and damage that led the decision to apply no more but ultimately as tillers aborted it was yield potential finally made the 60% into 100% of planned application. It was a similar story for other inputs, a cheap fungicide application made at T1 timing became all that was needed to keep wheat clean until the rain finally returned in mid-June. Spring crops needed just fertiliser and herbicides; I don’t think we have ever had a year where our usually very busy sprayer has been parked in the yard quite so much.

    The result has been an extremely cheap year, ultimately a very simple year. Although we are unavoidably heading into a lower output harvest than we have seen here for many years I think this could be one of the best farm management years I have had, there is not a single decision I think I would change this year, not a single opportunity missed and I don’t think I have ever been able to say that before. I’m looking forward to harvest and remain hopeful that this farming horror story could just have a happy, ie. profitable, ending!

  • Manufacturers In Focus…

    MANAGING STUBBLES WITH THE RAZORBACK RESIDUE MANAGEMENT SYSTEM

    Headed by Martin Lole, a farmer and engineer who has enjoyed a successful career as the driving force behind several leading UK vegetation and conservation agriculture brands, Razorback draws on over 100 years of combined industry knowledge shared by our experienced engineering, sales and service teams. Designed with superior quality, strength and versatility in mind, Razorback products undergo extensive testing during the development process to give operators piece of mind, knowing they have invested in tried and tested solutions. It’s on our own trial farm in Worcestershire that we developed a number of residue management systems including the Auto-Level hedgecutter with Co-Pilot technology as well as our latest development the RT Series rotary mower and RH Series trailed harrow.

    Award Winning Slug & Weed Control

    Launched earlier this year at LAMMA, the mower and harrow combination was developed to compliment direct drilling establishment by providing a reliable cultural control method for minimising weed and pest pressure. In recognition of this, the duo was awarded Gold at the LAMMA Innovation Awards in the Arable category and went on to win the LAMMA Founders Award for best overall innovation at the show. The judges commended the innovations ability to actively encourage a flush of weeds ahead of drilling and its potential for reducing reliance on molluscicides as a result of disrupting slug habitats. The mower and harrow combination work by consolidating two passes into a single operation, saving users time and diesel.

    Stubbles are chopped and distributed evenly across the full working width whilst the trailed harrow shatters residue to significantly reduce slug habitats, providing a cultural control method and reducing chemical applications.

    The trailed harrow features five rows of adjustable extra stiff 28” tines that offer high frequency vibration which enhance the shatter action to accelerate straw decomposition and stimulate weed chit. When following the RT Series rotary mower, stubbles can be topped, distributed and the surface stimulated to promote a flush of weeds and volunteers ahead of Autumn drilling in one pass.

    By encouraging an even flush of weeds and volunteers’ growers can make better use of their available chemistry to achieve an effective weed kill.

    Versatility and high spec as standard

    In addition to its arable applications, the Razorback mower and harrow combination suits a wide variety of tasks including tidying up headlands and reinvigorating grassland by removing thatch from the lower levels of the sward.

    Available in 5 and 7.5 metre widths both the mower and harrow are designed and built here in the UK. The RT Series rotary mower features double skin construction, full length replaceable skid shoes, and high specification Bondioli and Pavesi gearboxes and driveshafts. Unlike many rotary mowers, gearbox skirting protects the gearbox’s shaft seals and bearings from residue, string and wire which can cause unnecessary damage if left open to the elements. It is design elements like this that makes us proud to offer machines of a superior build quality that will stand the test of time. 

    For more information on any of the products in the Razorback range get in touch with our team on 01905 347347.  

    Scan the QR code to watch the Razorback system in action here:

  • Farmer Focus – David White

    Thoughts and lessons learned from the season. Where to start???

    Well the earth on the farm went from very wet over winter to very dry. April was the sunniest it’s been since 1929 I believe, with the drought being broken towards the end of the month by some very welcome rain. We have been treated to the clearest air and the bluest skies that anyone has seen for many decades. It’s a shame that it’s taken a global pandemic and shutdown of industrial operations and carefree travel to make the change to the environment that we have been aware is needed for a while now.

    May continued dry and we start to think that we need some vapour trails and upper air pollution to create conditions for rain to happen again! Whilst we do all we can to improve soil heath and structure and increase SOM to improve drought resistance still on light land the effect of insufficient precipitation combined with high temperatures and high winds have drained yield potential. So thoughts turn to combating drought and coincidentally on the internet popped up an article The Drought Myth, An Absence of Water is Not the Problem by William Albrecht.

    www.appropedia.org/Drought_Myth

    which discusses the role of nutrition in combating drought. I have been adding trace elements to spray applications at every opportunity but have still found that the absence of water is a big problem. More work needed here. Even the more specialist bio extracts appears to have made no difference. Soil structure and subsoil is no doubt very important and I’m always reminded of this by the route of a pipeline which crossed a field well over twenty years ago. The crop is always stunted and looks hungry (see pic) but the same soil was replaced in the trench that was removed, just in a different order.

    On the worst field I have for “hot spots” (see pic) the difference in crop changes dramatically in just a few inches. You would not think it was possible as we expect roots to roam for moisture and nutrition on top of their increased efficiency through association with Arbuscular Mycorrhiza Fungi. I will taking soil samples from 0-300mm and 300-600 analysed to see what differences can be found.

    On top of how we physically farm the soil we are trying to reduce crop inputs, jump off the treadmill of nannying crops with insurance PPPs and let crops on our healthier soils with an increased number of beneficials stand up for themselves.

    I have had success with this approach again this year with insecticide free crops of wheat and rape but less success with reducing fungicides. Learning where we can successfully cut back is still a work in progress. I refuse to be persuaded to apply a T0 to wheat preferring it to stand on its own feet but it’s surprising how quickly patches of yellow rust started to appear on my varieties of GP1 wheats. These being Zyatt, Solstice or Skyfall or a blend of the three. A T1 needed to be applied very swiftly, and to keep on top of the problem a well timed T2. Nothing saved there then! 

    Autumn insecticides are avoided when ever possible but we do need to be aware of the risks from the green bridge between crops, and on one field of wheat the aphid population that inhabited the volunteer oats and possibly were living in the excessive amount of wet chopped straw has infected the wheat fairly badly despite a poorly timed (with hindsight) insecticide application. As part of our IPM we really need to be able to get aphids tested to see what disease they are carrying and have regional data on this.

    Spring seedbeds were a challenge following the excessive amount of winter rainfall but as a rule better (dryer) where the cover crops had been left growing until early February than sprayed off before Christmas, in this case to get a second flush of Blackgrass. The ground does need to be dry enough to crumble into the slot or at least not mush back together again after the seed is placed and in the early sprayed off field it was not. With hindsight again I should have moved this a couple of inches deep to let it dry but had no machine for the job other than going over it with the Horsch tine drill. To that end I’ve found and purchased a super cheap new 3mt disc and packer machine which I’m fitting a seeder box to. This will perform three tasks, 1. covercrop establishment, 2. light movement of any seedbed to dry it if necessary and 3. mechanical covercrop destruction to reduce reliance of, or number of lts/ha required, in producing a clean environment to drill into of glyphosate. This is something I trialed in late autumn 2018 with a very lovely but expensive Lemken Rubin machine with some success.

    Headlands. I’m surely not the only one that has headlands that look better than the field! I haven’t quite worked out why this is but on a traditional cultivation system headlands were always the poor relation, especially in a wet year.  

    Thoughts around this are, better consolidation, in a no-till system is this possible? Fewer slugs due to consolidation. An effect of some type from the surrounding flora. Extra nitrogen due to me not cutting back the rate enough on the headland setting, but half of the N is applied as liquid! Drilling more slowly, or something else. Thoughts appreciated via Twitter or Farming Forum/BASE UK forum if you can please.

    So to sum up. The farm doesn’t look too bad and with a well timed rain and a little less heat and wind in May it would have looked very good. I can’t blame the no-till system, now it it’s fifth year here, for any crops that look less than perfect other than some spring barley and that was down to poor judgement on the day by me. The better well bodied land has the better crops due to holding more moisture than the land with sand under it. The ability to chose either the disc or tine drill depending on circumstances has been invaluable with the JD750a doing a fabulous job in green catch crops and the Horsch Dutch conversion likewise into wet chopped straw on wheat after oats or second wheats. In fact the no-till system afforded me the ability to drill 130% of planned wheat area in what was one of the most difficult autumns we can remember.

    Finally the desire to farm using many fewer artificial inputs is very laudable but there are risks when we back to rein back too far. 

    What is holding us back at the moment is the risk/reward balance, something organic farmers have much better sorted and to help progress Regenerative Agriculture more quickly premiums that support the way that we are farming would be helpful.

  • Field Lab: Organic Wheat Varieties Part 2 – The Results

    Results and Discussions – Spring Assessments

    The above table shows different crop traits that can be easily measured around stem extension, a key growth stage signalling the end of the Foundation Phase and the start of the Construction Phase. Several of the traits relate to crop vigour in the spring, which is desirable for organic farming, offering greater competition from the crop against weeds and for resource capture.

    Extase and AWC3 showed consistently above average positive spring traits, whilst Evolution performed consistently below average across these traits. Many other traits contribute to yield and quality and it should be noted that despite it’s apparent deficiency in terms of spring vigour, Evolution was the highest yielding variety in the plot trial.

    Growth Habit

    A relatively simple assessment to perform, varieties can be classed according to five growth habit groups from 1 (erect) to 5 (prostrate). This trait may have implications for the crop management as shown below in the farmer rankings with different weeding strategies dependent on certain growth habits e.g. erect types may be better for inter row hoeing. The trait may also provide an indication of competitiveness, with erect types generally taller and the prostrate types generally providing greater groundcover. Which of these traits may be most useful will depend on a number of factors including the farm (soil, weed community etc.) and the year.

    At a field lab meeting in April, farmers were given the opportunity to vote for their favourite variety based on the phenotypes in front of them. Most of the farmers expressed a preference for varieties with high biomass and good groundcover. Montana and AWC1 (Mv Fredericia) were voted the best varieties though for different traits. Montana was selected for its good ground cover, greenness, even spread and moderate height while AWC1 was selected for being tall and open making it suitable for inter row hoeing. This result illustrates the difficulty in selecting a one size fits all variety or so called ideotype for organic farming. The farm and crop management will heavily influence which variety is best suited for that system.

    Late flowering/Early milk Assessments in July

    Key traits measured in July around late flowering/early milk give an indication of varieties with mostly positive attributes for example disease resistance for the three main foliar diseases, good crop cover and high ear numbers. While ear density is usually the most important of the three yield components, it is not strongly linked with yield here, with grain number per ear and individual grain weight (size) also important. Some varieties with a large number of ears also had rather small ears (i.e. lower grain numbers per ear) and smaller grain. Crop height is generally regarded as an important trait in organic production with taller crops usually deemed desirable for their additional weed smothering and competitiveness. 

    Of course, crop canopy and cover are also important and height in and of itself may not always be beneficial if the canopy is also very open allowing weeds to compete. For this reason, final height has been treated as a neutral trait particularly given farmers comments about lodging and certain mechanical weeding practices (e.g. weed surfing) that may put taller crops at a disadvantage, or at least make them less desirable. On highly fertile ground taller crops may lodge with associated reductions in yield and grain quality possible. However, in certain circumstances where there is a large and competitive weed community, taller crops can be the difference between satisfactory and very poor yields.

    Disease

    The chart above shows the mean disease severity for the three most important foliar diseases. While disease is often considered by organic arable farmers to be of less importance than either nitrogen and/or weeds in terms of yield limiting, all things being equal, varieties with higher disease resistance will always be desirable. Increased nitrogen availability in conventional trials limits the relevance of so called “untreated” data as there is a known link between nitrogen and disease susceptibility, particularly for Septoria (Loyce et al 2008). Having said that, untreated yields and the relative yield compared to control varieties, used by the RL can be a useful indicator of overall disease tolerance or resistance, with those untreated varieties showing the lowest relative yield reduction compared to treated controls likely to be suitable for organic production. In fact, the best performing varieties in terms of yield also tended to show the lowest mean disease severity e.g. Crispin, Siskin, Evolution, Revelation, Hallfreda.

    Varieties with high relative untreated yields on the Recommended List will have high disease resistance and are likely to be highly desirable for organic farming though this data comes from the testing regime for the RL with full fertiliser and herbicide inputs, offering only limited relevance to organic farmers. What is clear is that having a high relative untreated yield is not enough for varieties since they must have a high relative treated yield in order to be considered for the RL.

    This means that varieties that show a promising relative untreated yield, and therefore potential suitability for organic farming, can be rejected on the basis that yields are not high enough compared to control varieties under treated (with fungicide), high input conditions. This is clearly an issue for the organic sector with the variety Mortimer offering evidence of this bias. Mortimer has performed consistently well in the organic plot trials for the last two years showing good disease resistance and high yields and has shown promise in terms of its untreated relative yields in NL trials. However, due to its below target treated relative yields the variety has fallen from commercial production despite it’s high disease resistance scores and potential for organic farming.

    An argument could be made for a small additional RL that only required high relative untreated yields for varieties to qualify as this would keep additional disease tolerant varieties in circulation and would increase the amount of relevant data for Organic farmers and for those farmers looking to decrease chemical inputs. At present, very disease resistant varieties can easily fall away without showing high fungicide treated yields and the RL is therefore facilitating this loss of naturally disease resistant material. This idea could be taken a stage further to include untreated in terms of nitrogen fertiliser to provide relative yields that would give an indication of those varieties better able to access soil nitrogen.

    The 2018/19 season was a challenging one for yellow rust with the two varieties Ehogold and Edelmann were found to be particularly susceptible (Table 3). Severe yellow rust on these two varieties badly affected grain fill and led to a poor yield performance. Both these varieties are organically bred and were included to compare their performance against conventionally bred material given that organically bred materially may show greater adaptation to organic cultivation, given its selection under organic conditions.

    However, these varieties were imported from Austria and show that continental varieties can be susceptible to UK races of rust and these varieties must be well tested to confirm resistance in the target production environment before bringing into commercial production in the UK. That said, the conditions were perfect for yellow rust with a mild winter, followed by a warm spring and overnight dews leading to an epidemic. During 2019 higher than expected levels of yellow and brown rust were seen in some varieties. It is not yet clear if the reported cases of high yellow and brown rust disease levels in 2019 indicate the initial emergence of new rust races or exceptionally high disease pressure at some sites due to optimal environmental conditions.

    Voting for preferred varieties at a trial meeting in July allowed farmers the opportunity to pick varieties based on a different set of traits and selection criteria than at the meeting in April. Varieties showing good canopy cover, a high green leaf area, low disease levels and a high expected yield (based on ear number and size) were most desirable. Hallfreda, the near market line from Sweden was the winner, mostly thanks to it’s very green and clean appearance and good canopy cover due to its high levels of disease resistance and later maturity.

    Yield and Quality data

    The average yield of the plot trial in 2018/19 was 3.60±0.08 t/ha. Whilst Tukey’s HSD scores show very few varieties are significantly different from each other in terms of yield (see Table 5), the varieties do tend to fall into a below average yielding generally higher quality group (particularly with respect to protein) and an above average yielding generally lower quality group otherwise summarised as a genetic yield (Y) and quality (Q) cluster. Yield and Protein show the typical inverse relationship.

    The two groups are generally considered as wheats for milling (Q) and wheats for feed (Y). Looking at Table 5 can help show varieties that may buck the trend such as AWC1 (Mv Fredericia) that comes top of the below average yielding Q group whilst showing high quality for all three variables measured. Hagberg Falling Number (HFN) is a standard measurement for milling quality but is highly linked to crop phenology and ripening making it an awkward variable to include given that the logistics of a plot trial mean all varieties must be harvested together.

    This means, that earlier ripening varieties will have a bias against them as they will likely come to maturity several days before the trial is harvested. While still useful as an indicator of quality, this fact should be considered when comparing HFN data. Ehogold illustrates this point well as the earliest ripening of the varieties tested and with high bread making quality attributes, it had one of the lowest HFN numbers.

    Investigation of Traits

    Figure 7 shows the principle components that explain the most variation in the dataset from the 20 varieties (excluding Ehogold and Edelmanm) and the 3 replicates assessed (60 plots) based on all measured traits. These principle components correlate with certain traits which are plotted on the figure and the strength of the correlation indicated by the colour (contrib: red = high and blue = low). 

    Of all the traits measured the height in March and April, and the relative biomass and the change in relative biomass (the difference between biomass in March and April: XBiomass) are the variables most strongly correlated with PC1. These may be considered a measure of spring vigour. Height in March and biomass in March also strongly influence PC1 while growth habit in April (GH April) also influences PC1. PC2 most strongly correlates with the change in biomass (XBiomass) and the change in height (XHeight). Variables in blue (i.e. yield, crop cover in July and Total disease) have a weaker influence on the principle components. Note that some variables have been excluded entirely from the PCA given their very weak influence on principle components.

    We can also look at how the different traits correlate with one another, by looking at the angles between the trait vectors. The smaller the angle the more positively correlated while the larger the angle the more negatively correlated.

    Trait vectors at 90 degrees are unlikely to be correlated. Observing the above PCA shows that yield doesn’t appear to be strongly correlated with any traits. The only trait that comes close is the growth habit measured in April with a small suggestion that more prostrate growth habit may be linked with a higher yield, but this is a very weak correlation and can essentially be disregarded. Yield is negatively correlated with total disease, growth stage in April (GS.April) i.e. more forward varieties, and height in April (which will in part be influenced by phenology, since the earlier varieties will be further through stem extension and hence taller). The varieties with more biomass in April also appear to be negatively correlated with yield.

    2017/18 and 2018/19 Variety Yield

    Estimated marginal means correct for bias due to differences between year to provide a more accurate aggregated mean yield for each variety to enable comparison of varieties averaged across years when certain varieties appeared in only one of the years. The 2017/18 trial yielded a grand average of 2.3t/ ha compared to the grand average of 2018/19 of 3.6t/ha. This represents a yield in 2017/18 of 64% the yield of 2018/19.

    This approach has been useful in identifying varieties potentially unsuitable and hence worth dropping from the variety trial. For example, Anapolis as a group 4 falls outside the clustering of the rest of the group 4s that are higher yielding, and falls within the lower yielding, higher quality cluster of the group 1s. Similarly, new group 1 equivalent milling varieties like Ehogold and Edelman don’t appear to offer more productivity than the current collection of group 1 varieties including Crusoe and Skyfall. AWC1 (Mv Fredericia) does look to have potential for organic production after two years with good productivity and excellent quality. The varieties Mortimer and Hallfreda as hard and soft group 4 equivalents respectively also look to have good potential for organic production on a commercial scale, showing good productivity within the cluster of high yielding group 4 types.

    Individual site findings; The Farm field scale trials

    The three farms that each grew a selection of three to four varieties for comparison at a field scale, did so utilising farm management practices to give a more reliable estimate of commercial performance. This was linked with a wider varietal testing network supported by the LIVESEED project. When looking at the varieties grown in each individual farm, these tended to align along a yieldprotein trade-off. However, observing any individual variety across farms, there is an evident change in yield with a reasonably constant protein content.

    Thus, the yield protein trade-off, generally seen as a big limitation especially for organic production, does appear across varieties within an individual farm, but not necessarily within a variety across farms (Graph 9 b). These trends are being analysed across the wider Liveseed farm network, hoping to shed light on optimal environments and management systems to help maximise wheat yield and quality. These results could help organic farmers plan their target market and hence varietal selection more effectively to meet market specifications, with some of the highest yielding farms in the wider farm network able to achieve >12% protein content, a particular challenge for organic winter wheat production.

  • AHDB Strategic Cereal Farm Week

    Sharing AHDB’s Strategic Farm demonstrations and practical ‘how to’ resources virtually

    AHDB’s Strategic Farm Week goes digital

    Usually, summer sees each AHDB Strategic Cereal Farm host open their doors to those interested in learning about the research programmes put into field scale demonstrations onfarm. However, due to Government restrictions, this year’s programme took place in a purely digital format comprising videos, webinars and a podcast. The webinars during the week covered a range of topics including monitoring crop development, pests and diseases, reducing chemical inputs and masterclasses on crop establishment, soil structure assessments, mole drainage and soil loosening. Experts from AHDB and across the industry led the sessions including pioneering farmers Simon Cowell and Tim Parton, and soil expert Philip Wright.

    This year, Strategic Farm East host, Brian Barker from Lodge Farm, Suffolk and Strategic Farm West host Rob Fox at Squab Hall, Warwickshire, were joined by a third. Farm manager David Aglen, is the newcomer having joined the Strategic Cereal Farm programme earlier this year, extending the network up to Scotland for the first time. Having yet to start trials at Balbirnie Home Farms, David is interested in looking at regenerative agricultural practices, plant and soil health and carbon offsetting through the Strategic Farm Scotland programme. David said: “There is little research going on into regenerative agriculture in the UK currently. This is the direction we want to take our business so working with AHDB offers the opportunity to harness the research available and get more work done to help us and the industry succeed in moving towards our goal.” 

    At Brian Barker’s farm, a lowering inputs demonstration is one of several demonstrations taking place, which was showcased during the week alongside research looking at cover crops, perennial flower strips and boosting early crop biomass. Lower input, higher margin farming, regenerative farming and soil management all came together in one of the key webinars of the week in which Brian Barker, Tim Parton and Simon Cowell took part, see the featured article. Farm manager, Rob Fox is overseeing a separate set of demonstrations in the west of the country looking at soil cultivations, the impact of summer catch crops and pests and natural enemies.

    This season has been a particular struggle for Rob, who at one point was considering throwing in the towel altogether. Following a season of heavy rainfall, he struggled to get crops in the ground, let alone establish his demonstrations. As a result, a significant portion of the research programme at his farm had to be written off.

    Since then Rob has soldiered on having endured, along with the rest of the country, a prolonged dry spell; going from one extreme to the other. “It’s been a tough growing year meaning we’ve had to reduce what we had planned for the season. “It’s not all been bad news though as we’ve been able to add in an additional demonstration looking at summer catch crops. We’ve planted two different mixes: one is a bought-in mix of phacelia and fodder raddish, the other is home saved spring beans and spring barley. The aim is to see if they is any benefit to the following wheat crop.” Attention now turns to later in the year, as the summer approaches and harvest 2020 beckons. AHDB looks forward to your joining us to hear about the results from all the harvest 2020 demonstrations at Lodge Farm and Squab Hall in the autumn.

    To access any of the content from Strategic Farm Week 2020, including watching back the webinar videos, please visit: https://ahdb.org.uk/sfweek2020 To find out more about the host farms please visit the dedicated webpages using the links below:

    • Strategic Cereal Farm East (Lodge Farm): https://ahdb.org.uk/farmexcellence/strategic_cereal_farm_ east

    • Strategic Cereal Farm West (Squab Hall Farm): https://ahdb.org.uk/ farm-excellence/strategic_cereal_ farm_west

    • Strategic Cereal Farm Scotland (Balbirnie Home Farms): https:// ahdb.org.uk/farm-excellence/ strategic_cereal_farm_scotland

    How to decide when to lower inputs

    AHDB’s Knowledge Exchange Manager for Scotland, Chris Leslie, hosted the “How to decide when to lower inputs” webinar, as part of Strategic Farm Week in June 2020. Here he talks through some of the key findings and topics of conversation from the webinar, featuring farmers Simon Cowell, Tim Parton, Brian Barker and David Aglen, along with Catherine Harries, AHDB.

    Changing systems, changing mindset and learning to work with nature were key themes throughout this webinar exploring the topic of lowering inputs. This topic is one that is being looked at across the three AHDB Strategic Farms through their demonstrations and six year programme. All of the farms are at differing points on the road to regenerative agriculture, the system of farming principles and practices that increases biodiversity, enriches soils, improves water quality, captures carbon and enhances ecosystem services.

    Agriculture is disruptive by its very nature. However, our three Strategic Farmers as well as Tim and Simon, aim to work alongside nature and put soil and the environment at the forefront of their farming system using tools such as IPM and no-till. Tim Parton stated right at the beginning of his presentation, that “I find when you work with nature, rather than fight nature, it works”. A key part of moving towards this system is to find ways to farm with less inputs. For Simon Cowell, this has included a range of options that have been put into place on his heavy clay farm in Essex, such as: stopping growing oilseed rape, the introduction of perennial crops such as lucerme and aiming to overlay crops through the rotation to support soil biology and mycorrhizae.

    This change of the rotation has enabled Simon to halve the nitrogen used on farm, from when he was in the previous system of growing solely wheat and oilseed rape. Simon admits that “it’s difficult to back off and say I’m not going to spray any fungicide or put on any phosphate fertiliser” and understands that every farm is set-up differently, with some paying high rents and mortgages. However, the importance of getting your soil in the right condition before you start to reduce inputs was a key part of the solution. For Simon, he has been able to speed up this process by using home-made compost to enable the biology to function and for the nutrients to the circulate and more.

    Simon noted that his preference is to not focus on the margins of individual crops instead, ”it’s about the whole rotation that we’re considering, its better to not think about each one individually. It’s a longer term thinking all together ”, he says. Brian Barker also discussed how he is looking at how far he can reduce inputs in his crops at the Strategic Farm East. As one example, a demonstration taking place this year on-farm is looking at reducing plant protection products and fertiliser to see what impact this will have on pest and disease pressure, crop yield and net margin. The farm has applied a reduced input programme in a field of winter wheat and will compare the results with a conventionally managed crop at harvest. 

    The work is part of Brian’s ongoing interest in looking at how far it is practically possible for farmers to reduce inputs. Last year he tested the natural resistance of winter wheat varieties by applying three different fungicide application programmes to see which gave the best margin. “This is all about changing mindsets as we’re going to have to look at alternative ways of protecting our crops. In this demonstration field, we ploughed it due to previous blackgrass populations, planted naked KWS Siskin seed, applied a pre-emergent herbicide, no insecticide, one PGR at T1 and only spent £14/ha on fungicides at T1 and tebuconazole at T3 due to rust coming in late.” said Brian.

    “Weaning myself off using inputs hasn’t been easy and it’ll be interesting to see how this crop does. Last year the yields held up quite well; the wheat that received the lower input programme produced the best cost of production by a long way and yield held surprisingly well. Lack of moisture is clearly going to be significant this season which was similar to last year.”

    For farmers starting on the journey, this thinking, following the Strategic Farm work and asking the questions of research, along with building soils might be a good place to start.

    Given the extremes of the last two seasons, some farmers have looked into going back to cultivations when transitioning to a regenerative agriculture system – something that was eluded to several times during the course of the webinar by both Tim Parton and Simon Cowell. Managing these extreme weather patterns is often the difficult part when in transition, as you learn to work with or understand the natural systems. It is acknowledged that it is incredibly hard work and often years of change to take soil from a conventional system before getting to a place where the soil starts to work for you rather than against. 

    No one piece of machinery holds the key, with all involved in the discussions having different types of machinery on their farms. It has more been the use of synthetic inputs and often a lack of organic nutrition, which has created the current reliance on inputs. We need to start to examine how we look after our soils, so that our crops can remain green for longer when the next dry period appears. It is by doing this that inevitably allows us to reduce our artificial inputs. This webinar was just a start of the discussion and the conversations and research will undoubtedly continue.

    To watch the webinar session back, please visit the AHDB Cereals and Oilseeds YouTube channel or link through from: ahdb.org.uk/sfweek2020.

    For all of the details about the demonstrations taking place at the Strategic Farms this year and the results to-date, please visit the webpages at: https://ahdb.org.uk/farm-excellence.

  • Cover Crops On Trial

    AHDB’s Technical Knowledge Exchange Manager, Harry Henderson, takes a look at the results from the recently published Maxi Cover Crop research findings and discusses what lessons you can take-away for your farm system.

    Cover crops. You’ve read the articles of untold benefits of soil restructuring, drainage improving nutrient building, weed suppressing, disease controlling, yield enhancing, resilience building, environment saving, superhero cover crops. You’ve seen the videos online of drills working in bonnet high cover crops without issue and crimper rolls seemingly doing away with agro-chemical control. It must be a no-brainer to get involved in cover crops.

    But on the 11th May this year the AHDB issued a press release and a 111 page report of a 3-year cover crop trial with the standout comment being; Cover crops were associated with an average gross margin loss of £150/ha across two consecutive arable cash crops. How could this be? I phoned a couple of my colleagues and they said ‘It is the experience of many farmers starting out using cover crops’. Clearly, a further look into the report is necessary and this publication is the place to do it. Does the report have gaps? Sure. Does the report highlight real findings and put some realism into what is an ever-evolving story? Definitely.

    So, the AHDB funded a three-year “Maxi Cover Crop” project, which aimed to maximise the potential agronomic, economic and ecological benefits from cover crops through investigating different cover crop options and crop management approaches.

    In a recent survey of UK farmers, the most cited reasons for not growing cover crops were:

    1. They did not fit with the current rotation

    2. Expense

    3. Difficulty of measuring their benefit to crop production.

    The Maxi Cover Crop project has shown that:

    • Early establishment (August rather than September) is important to maximise the benefits of cover crops, particularly to ensure good crop cover and nutrient recovery. Typically, the different cover crops yielded between 1 and 3 t/ha above ground biomass and took up between 30 and 50kg N/ha, although up to 90 kg/ha N was recovered following early establishment at one of the sites.

    • Highest N recovery was achieved by using either species that were able to fix N from the atmosphere (i.e. clover and vetch) or establish good above or below ground biomass, early in the season (e.g. radish, phacelia and rye).

    • Rye produced the largest root length early in the season. Phacelia also rooted well although the roots were slower to develop. By the time the cover crops were destroyed (February), phacelia had produced the greatest amount of roots, particularly in the topsoil, and it also had the narrowest roots, suggesting it explored more of the soil for a given root biomass compared to the other cover crop treatments. There was no relationship observed between the amount of cover crop rooting and rooting of the following spring cash crop.

    • Soil structural improvement from a single year of cover cropping was difficult to detect. However, at two of the tramline trial sites with medium textured soils, penetration resistance, bulk density and visual structural scores were lower (i.e. ‘better’) where cover crops had been grown indicating improved soil structure and workability. Earthworm numbers were also increased where a five species mix (comprising phacelia, oats, oil radish, clover and buckwheat) had been grown.

    • Cover cropping on heavy textured soils was shown that it can result in increased topsoil moisture content, probably as a result of the vegetative cover preventing evaporation from the soil surface.

    • Late destruction and incorporation of a high cover crop biomass (< 1 week prior to drilling) resulted in poor seedbed conditions for the establishment of the following cash crop, which led to lower crop yields.

    • Cereal cover crops (as a single species) should not be grown ahead of a spring cereal cash crop. At the experimental sites, spring barley establishment, rooting to depth and grain yields were all reduced following oat and rye cover crops. The reason for this is uncertain, but N immobilisation, and pest and pathogen carry-over (‘green bridge’) have been cited as possible causes.

    • A buckwheat cover crop may enhance P availability to the subsequent cash crop. At the experimental sites, there was a trend for higher phosphorus concentrations in spring barley grain following a buckwheat cover crop compared to the control (volunteer/weeds). It is uncertain what the mechanism is for this, as rooting by the buckwheat and total above ground biomass production was low compared to the other species evaluated.

    • A single year of cover cropping does not improve gross margins. Nearly all the cumulative (2 year) margins calculated across the sites (20 comparisons) showed a reduction in margin from growing a cover crop compared to no cover crop (ranging from + £64/ ha following oil radish on a clay loam to – £476/ha following a two species mix on a clay soil). The lower margins were caused by an absence of sufficient yield increases to compensate for the additional seed and establishment costs. The benefits from changes in soil physical properties or nutrient dynamics are unlikely to appear within the 2 years of the project so the longer-term use of cover crops over a full rotation (including more than one year of cover cropping) is required to fully assess the impact on margins. Moreover, non-tangible benefits such as improved water quality, erosion control and enhanced biodiversity should be considered as a wider public good.

    Tackling that headline statement of £150/ha loss. The operation costs, while representative, are at the top end of where costs tend to be.

    The Monitor Farm average for combining is £66/ha for example. And disc based direct drilling varies from £19 to £30/ha depending on how much land you cover with it. S,o operation costs used in the trial are 30% more than you’d hope to face.

    As an illustration, at the Kneesall, Nott’s trial site, the spring oats had the lowest cumulative margin of £879/ha due to a yield reduction of 1.43 t/ha compared to control, (stubble and cereal re-growth) which may reflect the rotational conflict of growing a cereal after a cereal cover crop. The highest cumulative margin was from the oil radish which was £1256/ha, which reflected the higher spring barley yield and low seed costs compared to the other treatments. The control cumulative margin was £1192/ha. The cost of establishment of the cover crop ranged from £65/ ha (spring oats) to £118/ha (mix 3 – spring oats, crimson clover, oilseed radish, phacelia and buckwheat). It’s perhaps unfair to expect a cover crop to return on investment from yield improvement alone. Especially in year one. As we have realised at many a Monitor Farm meeting, building soil resilience is a career long objective and adopting cover crops should enable lower machine costs, much lower than used in the trials. Cover crops should also extend working windows and improve surface drainage, but again these are long term aspirations rather than quick fixes.

    With all field trial work, while questions are answered, more questions are raised. That well-worn phrase ‘more research is needed’ certainly stands true in this case. And arguably a greater look into adopting cover crops into a system of changes on the farm, to lower cost, reduce reliance on inorganic solutions and improving overall farm resilience is needed.

    Future research suggestions included:

    • Understanding the fate of N recovered by cover crops – when this N is released and how much is released. The ability to predict mineralisation rates for different cover crop species grown on contrasting soil types in different agro climatic zones will improve fertiliser recommendations for subsequent cash crops.

    • Evaluating alternative methods for destroying cover crops rather than relying on glyphosate (e.g. grazing, chopping, crimping, rolling). Understanding the limitations of techniques for managing contrasting cover crops is important to improve guidance for cover crop management and the implications for subsequent cash crop establishment and effects on soil properties and N supply.

    • Evaluating the long-term (multiple cycles of cover cropping) benefits of cover crops. What are the benefits for soil organic matter, soil biology and associated soil properties.

    • Quantifying the economics of growing cover crops and the potential income from livestock grazing or the reduction in inorganic nitrogen fertiliser application in the following cash crop.

    • This study showed that rye and to lesser extent spring oats resulted in slower development of spring barley early in the season and lower yields at harvest. Further work is required to understand the cause of the cash crop yield reductions (e.g. nutrient availability, disease pressure, etc) and whether cover crop mixes can be developed that do not lead to reduced yields. This has implications for EFA’s which require cover crop mixes to include a cereal and non-cereal. • In this study, there was some evidence suggesting that buckwheat may enhance P availability to the following cash crop. However, further work is needed to understand the mechanism for this, and given the cost of buckwheat, how much of a cover crop mix needs to be buckwheat for this benefit to be achieved.

    While there’s lots still to understand, it is a no-brainer that covered soil is good for farming, the environment and will pay dividends in the long term. So a longer term look into cover crops would the best as the next steps for research. All three AHDB Strategic Farms in Warwickshire, Suffolk and Fife, Scotland will address cover crops over their 6-year programme and incorporate them into each farms long term thinking. Make sure you check in either online with the results from these farms as they come through, or in due course, in person.

    For further information on cover crops and to download the project report, scan the QR code below:  

    For further information on the Strategic Farms, visit: scan the QR code below:

  • Drill Manufacturers In Focus…

    NEW FLEXIBLE SEEDING OPTIONS FROM KUHN

    Supplementary seeder range adds versatility

    KUHN has introduced a range of supplementary seeders that can be fitted to its Venta, Espro and Aurock pneumatic drills to facilitate progressive practices such as companion cropping or apply fertilisers, granular herbicides or slug pellets whilst drilling. The smallest model in the SH seeder range is the SH 1120, with a 110 litre hopper. In this case, air from the drill’s main fan is used to direct product into the venturi to enable it to be applied with seed from the main tank. The larger SH 1540, SH 2560 and SH 4080 models, with 150, 250 and 400 litre hopper capacities respectively, are equipped with their own electrically driven fans and apply product via splash plates behind the main seeding lines. All models use KUHN’s Helica volumetric seed metering system, as used successfully on their range of mechanical drills, to maximise the accuracy of output. Application rates are controlled through the ISOBUS system in relation to the forward speed of the tractor.

    “The SH seeders are an effective way of adding great versatility to KUHN pneumatic drills,” says KUHN UK Product Specialist Ed Worts. “With the main drill sowing seed in the usual way, the SH seeder can be used to sow a secondary seed, such as a companion crop used to suppress weeds, add soil fertility or act as a pest deterrent, for example. “The SH seeder can also be used to apply starter fertiliser, slug pellets or a granular herbicide such as Avadex, such is its versatility and adaptability. “In the case of the Espro RC and Aurock RC, which have split hoppers as standard, the SH seeder adds a third application possibility. This allows a variety of applications to suit individual requirements and reduces the need for expensive seed mixtures.” On the larger SH 1540, SH 2560 and SH 4080 models, application rates between 2.2kg/ha and 130kg/ha can be accurately achieved alongside the application from the main drill.

    Adaptable seeder offers cost effective establishment option

    A cover crop seeding unit, compatible with a wide range of minimum tillage cultivators and capable of applying all types of seed, or fertiliser, at rates from 1 to 430kg/ha, is available from KUHN Farm Machinery. The SH 600, equipped with KUHN’s Venta metering unit and with the option of 16, 20 or 24 outlets from the distribution head, is designed for uniform seed spread across a 3–9 metre working width. Seed is distributed via discharge plates located in front of the cultivator roller to achieve optimum soil-to-seed contact. Precise and simple application rate settings are achieved using KUHN’s Quantron S2 control terminal, which aligns output with forward speed. Quantron S2 also monitors seed level and controls fan speed and metering unit speed. With a 600 litre hopper, the SH 600 has big bag capacity, and the machine is fitted with a ladder and walkway to allow safe and easy access when filling. The SH 600 is specifically designed to operate with KUHN’s Prolander, Performer, Optimer XL and Cultimer L 1000 minimum tillage and stubble cultivators and is sufficiently adaptable to work with other makes of machine.

  • Farmer Focus – Adam Driver

    What a season we have had! Its years like this when we can really learn a lot about our farming system and what we are trying to do.

    So, it went stupidly wet stupidly quickly. We have had some really easy seasons in the past 5 years where we have been able to drill later for blackgrass control. Can we start drilling earlier again with low disturbance drills now we are on top of the problem? I hope so. Should we be growing catch crops in front of winter crops? I think this can really help mitigate some of the issues with heavy rain, catch crops will pump water in the autumn. It is often claimed they do this in the spring however from personal experience this is not true. For the autumn I think it is far more plausible as the plants are generally growing pretty fast.

    Soil structure, of course is at the forefront. Better soils infiltrate more water and hold machinery (even big heavy stuff) far better than fluffy cultivated stuff. Good soil structure is at the core of what we are all trying to do and a season like this highlights that even more. There were many horror pictures of soils washing away due to poor soil management on social media. It gets dismissed as the “weathers fault”. Not a good enough excuse for me I’m afraid. Seeing these kinds of pictures and the excuses that went with them were frankly worrying and highlighted the lack of ownership UK farmers have of their problems. 

    Drainage is something that has come up again with a season like this. With no tilling on hanslope clay soils I think good drainage can be the difference between success and failure. We do a lot of mole draining, often in the spring and the better drained fields look so much better for it in both winter and spring crops. Some of the old drainage systems are starting to really show their age now so we will be looking at ways to either repair or replace them. I have an appointment to view a tractor mounted trencher next week. Afterall, there is loads of free time when you aren’t making dust with cultivators for months on end!

    The spring as we all know, was equally ridiculous. There is no way a soil should go from being absolutely sodden to being too dry to germinate a crop in 5 days as some were reporting. Soils just aren’t working properly in many places around the country, including some of my own. These extremes of weather do appear to be becoming more regular. We need more resilient soils in order to deal with them. I discussed with a friend the other day about the regen journey we are both on. He pointed out as farmers we are so used to be able to instantly buy a piece of kit, a chemical or a fertiliser that gets us out of muddle or solves a problem, or it has in the past. What we are doing now is a much longer game. We need to focus on the core principles and not revert in panic if something goes wrong. Over time as we build our soils, gain a better understanding of the soil biology and the intricate ecology we are working with and share knowledge. Our soils will improve and shelter us from these extremes of weather and volatility of the industry. 

    What is the solution to all this? Keep learning, keep pushing, keep trying. There are no magic bullets!

    A quick update on crops. OSR, this looks okay and will be ready for harvest in about 7-10 days (its 28th June today). I don’t expect it to break any records but has been grown very cheaply, it should offer a reasonable margin with minimal capital risked. Wheat looks average to poor. Spring crops are a mixed bag but generally pretty good. Winter barley looks well and will be harvest next week. I am looking forward to getting this years crop out the way, chasing the combine with the muck spreaders and drill planting OSR and cover crops.

    UK agriculture is at somewhat of a cross roads. A red blue pill, blue pill moment. Whilst it used to be “conventional vs organic”, the regenerative group has formed. I have started to try and view the way we farm as treating causes not symptoms, conventional farming has always been about treating symptoms. This has worked well for a long time and done its job. However, we are on a treadmill in which we externalize all of our problem solving. This exports a lot of money from farm businesses. Gene editing is now being pushed by many farmers and the farming lobby groups as some kind of saviour to post Brexit farming.

    They promise amazing advances such as nitrogen fixing wheat, disease resistant crops, drought tolerant crops (why we need drought tolerant crops in the UK proves how bad our soil management is!), gluten free etc. These are supposed to be provided by small UK companies. This is all well and good, but how will those companies avoid the clutches of bio-tech giants they could theoretically put out of business? It is a lovely thought that small UK seed breeders will provide wonderful traits for the benefit of the population, but I fear they will be bought out very quickly by corporate power of the bio-tech companies. What GE (and GM) are essentially trying to do is fix problems from our reductionist approach to agriculture.

    The Green Revolution was touted as a scientific marvel but here we are, with the same problems and awaiting more answers to be provided to us. GE is just a continuation of the treadmill, the treatment of symptoms rather than causes, how long until GE traits get resistance? Not long if you look at what’s happened to chemicals and GM. I will be called a luddite and anti-science for saying all of this, however was it not Albert Einsetin who defined insanity as, “doing the same thing over and over expecting different results”? We are also constantly told we need to ‘feed the world’, this is one of the biggest marketing ploys pushing conventional reductionist agriculture and farmers fall for it day in day out, thus staying on the treadmill. The problem of feeding the world is not one of production, it is of distribution, politics and economics.

    On the other side we have regenerative agriculture. I view this as a systems-based approach harnessing nature and understanding soil biology and plant nutrition. We all know farming has been based around the physical and chemical since the green revolution, the biological side of things has been completely forgotten until recently. Great in-roads are now being made by farmers around the world and in the UK. The problem many have with this is the simple trials we are so used to, for example X fungicide works better than Y fungicide on this variety do not work on the highly complicated ecology and biology of the soils we are trying to harness.

    If a trial does not say ‘do this’ we don’t do it, its not scientifically proven right? By taking this route we begin to understand how to solve problems. Why does this crop of wheat need five fungicide sprays? Because it is nutritionally unbalanced because the soil biology is not working, because we have pumped it full of ammonium nitrate. Why do we get this weed? Because we have made the growing environment perfect for it because of our agricultural systems. Of course, none of this is quick fix, as said before there are no magic bullets. But an approach to farming that revolves around harnessing the resources we have, soil, air, water and sun in a sensitive manner for me is the only way forward. We need to be using less chemicals.

    They are expensive and have unknown side effects, especially to the soil biology and nutrition we are trying to work with. We need to use less soluble fertiliser. Nitrogen use efficiency is very poor on UK farms and it has consequences for the environment. Most importantly for me, as a professional farmer running a business, all this stuff is very expensive. If we can even reduce the amount of bought in inputs by a quarter to half that we use over the next five years imagine how different financial results will look?

    Which pill to take? The red pill is a continuation of the treadmill of reductionist 20th century farming where we buy in our solutions which only treat symptoms. Year in year out we do the same thing until resistance or revocation stops us. We then hope we can buy something new to replace the previous failed solution. Great for the people selling the gear, not so much for the farm finances.

    The blue pill revolves around finding out the how to solve the causes of problems ourselves. It requires study and knowledge exchange, a degree of bravery and a totally different mindset. It is taking ownership of our production system. It is a mixture of art, science and gut feeling. It is a slow burner and you will not instantly see dramatic results. Over time, as proved by a growing number of farmers in the UK it does work.

    The future is incredibly exciting for us. Things like BPS going become trivial when you really start to change your mindset into a regenerative one. If only the industry as a whole spent as much time and money on researching how to harness and improve soil and biology as we do moaning about the loss of neonics and demanding GE, just imagine where we could reach as a collective.

    Bring it on, lets make our own luck and reclaim ownership of our agriculture.

    Some useful extra reading

    ‘Chasing the Red Queen’ Andy Dyer

    Altered Genes, Twisted Truths’ Steven M Druker

  • Farmer Focus – George Sly

    A lot learned from a tough year!

    13-5-12,9,0

    Our farm in the South Lincs fens is partially above and partially below sea level. Last winter certainly had its challenges, we had flooding on some fields, flooding in my parent’s house and no winter crops on the farm. It was a long winter to ponder decisions for this spring. But in times of despair its often a good point to reflect on how to make changes and adapt for the season ahead. Drainage is something we will be looking ever closer at, but not in the form of all new plastic pipes. We have fantastic drainage systems in the Fens and I can only feel for the farms in the west with the floods. 

    Our wheat harvest was pleasing and disappointing in many ways. I have realised how important timing is on spraying, having only farmed 2 years I must admit to being a little blasé on timings. All of our wheat was no-till after forage Maize or Beet and we did have Septoria and Fusarium issues which I believe cost us 1-2T/Ha overall. It had potential to be one of our best yields. As a machine maker and Farmer I should tell everyone its all perfect, but we all know that is not true!

    Our Sugar Beet and Maize proved to be a big success in terms of margin. Maize for us is a crop that we are using to try and supercharge soil health. As hard as that is to believe we utilise August until end of April to grow big cover crops, maize being a fast growing C4 plant means we can almost have the best part of the year doing soil improvement work but still make the return we need. Using strip till we keep harvest damage to a minimum and usually don’t require any herbicides, insecticides or fungicides other than Roundup at 3L. If we can drop the Nitrogen its organic electricity!

    Running a multitude of businesses has its stresses and strains and I have certainly realised how stressful farming can be. In 2-3 years having the hottest summer ever, longest drought, biggest flood etc etc. But we are very lucky to be working in nature.

    Clover Companions with row crops – can it replace synthetic nitrogen? Ongoing work…

    We have finished a 2 year cycle with clover in row crops. Starting with Rape, then maize and we will now try some wide spaced winter cereals. We used a broad leaf white clover. We established it in June (after forage triticale) then drilled rape 25cm left or right of it, then harvested the rape. We then grazed with sheep hard. Then established Maize into it after trying various chemical and mechanical suppression techniques. Im really encouraged by it, we have seen some rather unexpected positives and negatives. But we will keep this 2 hectare trial running for 7-10 years in the hope we will find a system that can work long term. (photos of clover in rape and maize)

    AGROFORESTRY: decision made!

    After a long dreary damp winter, I looked at various options for our farm to plan it from now until 2060 when I hope to hand it on to my son. I am 34 years old, and such a decision takes a lot of thought. After many deliberations and a lot of research I have decided to put the farm into an Agroforestry system, incorporating Perennials (Trees and shrubs) with Annual crops. This will be implemented starting in Winter 2020-2021 with the first 30 hectares, and we aim to complete the planting by 2027.  The system design for agroforestry has taken me almost 5 years to plan, initially having being inspired by Stephen Briggs farm nearby and a lot of inspiration from Martin Crawford and the late Martin Wolfe. I was lucky to be able to visit some farms practicing agroforestry in the UK,  France and the USA to gain some experience and learn about some pitfalls to avoid.

    Many people have said to me, George that sounds very risky. But I look at what we do now as reasonably high risk. Another interesting fact when planning the Agroforestry, big is not necessarily better. It would work better if we had maybe 200 acres less for my system. May this be an opportunity for farm sizes to decrease again? Probably not… but it was interesting to come to the thought of reducing in size.  

    Our system will involve 24 metre alleys of annual crops or rotated pasture with 4 metre under strips. We will lose around 9-11% of our land in total to the tree strips and grass strips. When I say lose… they are far from a financial loss. When the planting is complete we will be growing I believe 3-4X the human consumable calories/nutrition per hectare compared to our current system, we aim to be energy positive and carbon negative (meaning we will sequester more carbon than we emit and we will generate more energy than we consume). We will produce fruit (for drying and fresh), nuts (whole, cracked, oil, flour), berries (dried), medicinal extracts, cereals, meat, energy and building materials. We will monitor the nutritional output per hectare, calorific output per hectare and hopefully link all of that to some metrics/tracking/indices.

    Protein… There is a lot of talk about Veganism, anti-meat etc. One reason we will plant nearly 2000 nut trees is that I want some of my customers to be vegan. I am not vegan, I will never be, but I want to embrace veganism and produce products to welcome them. At the same time we will turn our most successful crop (grass) that we cant digest into meat. We hope to integrate poultry in 2026 and rotate them around the agroforestry lanes.

    People have said to me, what would that do to the value of our farm? For one I have decided I wont move (even if the sea comes over the wall in 2050) I am here to stay for my life. When you realise that, the value of the farm is irrelevant, and decisions get a bit easier. It will be my son’s issue. Secondly, a diverse, rich, balanced eco system is a very saleable asset and its value will grow in the future. The fens is a funny old place, flat, drained, to a certain extent man made. But it has its charm!

    We plan to market the above ground carbon privately to industry as-well as offsetting our emissions from other businesses we own.

    In future articles I hope to write more about the tree species we have chosen, why and how we plan to market them and in what form.  Anything I have learned and will learn on our farm is available to others and always will be. We have such exciting fortunate possibilities in UK farming for the next 50 years and we should be excited and smiling even if it’s a bit tough at the minute.

  • Soil Workshops At The Oxford Real Farming Conference 2015

    Editor Mike Donovan recalls the talk on soil at the 2015 Oxford Real Farming Conference by Bruce Bell of the Scottish Agricultural College. Delegates were asked to bring soil samples so Dr Bruce might analyse them, and the event proved so popular the room in the Town Hall was packed. Unfortunately many farmers thought it a competition to find the best soil and so he was confronted with some examples of the best in the country. A few, including your editor, decided to take samples of poor soil, and the advice was very helpful.

    Visual evaluation of soil

    Bruce Ball specialises in soil physics and soil management at Scotland’s Rural College, and concentrates on compaction, structure, and porosity. Bruce says “Visual evaluation is something any farmer can do, without involving expense.” Evaluation can suggest remedial action. Bruce told his audience that soil is made up of 45% minerals; 25% air; 25% water; 10% organic material; 10% roots and around 8% humus. Ratios vary through poor structure and soil type. Evaluation involves extracting and inspecting a block of soil. He said Tom Batey, a farmer who has been an inspiration to him, tells people to “observe and let the soil tell its story”.

    Comparing soil from the the centre of the field with a block taken from under the fence line, corner, or other area of the field not rolled over with a tractor and/or heavily treaded by cattle is a useful exercise to see the damage which has been created over the years. Soil block extraction Dig at least a spade spit deep, and more if the field has had some deep cultivating and heavy traffic on it. The block needs to be about 6ins wide and be lifted out carefully and placed on a plastic sack. If the soil is hard it might be necessary to get the block from the side of a previous hole.

    What to look for If the block has a uniform structure the signs are good, but you need to take more than a passing glance. Soil that has been affected by traffic and other use will have horizontal layers of different structure. The depth of these layers needs measuring and noting down. Breaking the soil in the block reveals more information. The first stage it to move the block on the bag gently and see how and where it fractures. This can show layers which may not be first visible, and you can then pick out lumps from different depths of the soil and take a look at their shape. Breaking lumps into 1/2in – 1.5cm – fragments will show whether their porosity, root patterns.

    Shape of soil pieces It’s obvious that you want to see the soil as it is present in the field, so parts that have been squashed by the spade and boots are not representative. Similarly when handling the need is to do it gently. Angular patterns, smooth surfaces rather than pitted indicate problems. Plant roots in the block indicate the quality of the soil. Roots that are clustered, which turn at sharp angles, that are thick and short all indicate soil problems. Soil colour is very important, as that which has been starved of air goes grey, and can smell of sulphur and quite frequently there are ferrous ions present as well. Colour varies with the mineral type. Soil smell is another useful measure of structure. He described three different smells – like leaf mulch, a kind of woodland scent; like old compost which is perhaps slightly more acidic; sulphurous with a hint of rotten eggs in there, and it is the last which indicates problems.

    Soil scoring

    Scoring the sample starts with the ease of block extraction, the aggregate shape, roots, colour and the ease of fragmentation. Soils have a wide variation of types and qualities, and there’s no point in expecting yours to compare with the best – unless it is the best! All are susceptible to damage, and the damage will show itself in the same manner in each type of soil, which is why visual evaluation is viable.

    Improving damaged soils, remedial methods

    Bruce had less to say on the remedial work – but then his talk was on evaluation. Yet putting soils right was perhaps the reason for many of the audience being there. Sward lifter warnings He had some words of warning about sward lifters – the Sumo is being well advertised and we featured a home designed one from Gwyn Scourfield, in Whitland. Good grass swards have prime roots which go down a long way. If a lifter is pulled through it the roots get cut and this obviously damages the plant and so reduces grass yield. Lifted swards are also more susceptible to poaching, as the soil can be quite aggressively moved upwards, leaving it less capable of carrying weight.

    Aeration with a spiker Bruce explained the value of getting air and moisture into the soil. He said that aeration was valuable, and put up a picture of the aerator your editor made in 1988! Spiking can’t harm soil. Spiking is less drastic than subsoiling and sward lifting. If the soil is damp and smears, the slits are going to be less effective than if the soil breaks like scooping cold ice cream. But the soil which is dry takes a lot more weight to get the spikes in. We used the spiker once or twice a year over the whole farm, but were far too ignorant to understand the value of digging holes and looking at soil strata. I would probably have been horrified at what I was looking at. Aerating worked well absorbing rainwater after thick slurry spreading. Heavy rain all day was going to wash the slurry into the stream, which was monitored less than a mile away for pollution. The spiked holes absorbed had the rainwater and slurry – result: a saturated field which took 10 days to get dry enough to plough, but no officials called!

    Getting the camera out Taking pictures over a period of years will show the changes that happen over time and Bruce says it can be a simple way to keep a check on progress.

    Broader issues

    The trend has been for farmers to rely entirely on soil sampling and analysis, generally done free of charge by their fertiliser supplier. The pH, NPK and S results are a long way from what can be provided to guide the farmer to the most effective ways to manage their soil, not simply for the crop they are planting, but for crops in the future.

    This report first appeared in Practical Farm Ideas Vol 23-4 Winter 2014-15

  • Is Magnesium The Missing Link?

    Compelling reasons to take a good look at Mg levels in your soils and methods of raising them
    Written by Jon Williams from thesoilexpert.co.uk

    The result of over 700 detailed soil samples in West Wales has consistently shown a shortage of magnesium with 70 per cent of the soils depleted on the clay colloid and 48 per cent showing a shortage in the available form, and unless we carry out a detailed soil analysis this major nutrient deficit cannot be corrected. Here we consider some of the possible reasons how we have come to this situation in UK soils. For the last 70 years we have focused on PH, available P, K, Mg and the fertiliser industry placed great emphasis on the P and K without consideration for the Mg (Ref Kirkby and Mengel 1976). There is now increasing evidence of the occurrence of magnesium deficiency symptoms showing up in crops and plants which will affect crop yield and quality. [1]

    Soluble Mg fertiliser is a recent discovery

    One of the reasons for this was that there was no soluble magnesium fertiliser available in the UK until 30 years ago when bulk powdered Keiserite Mg So4 arrived from a mined source of naturally occurring rock from Germany.

    However this was difficult to spread and sales of this soil amendment product did not take-off until a granular version arrived 20 years later, but still no manufactured compound fertilisers made in the UK contained Magnesium. Today Keiserite, magnesium sulphate and Magnesia Kanit 27%Na 11%K, 5% Mg, 12%S are available in the UK and both are approved for organic farms with derogation but there are still no compound fertilisers containing magnesium.

    The role of Magnesium

    Magnesium has a key role in the formation of chlorophyll and acts as the anchor for Nitrogen in every cell of chloroplast both of which help to create the dark green colour we associate with a healthy plant. However its major role is in enabling the phloem of the plant to easily transfer the products of photosynthesis, sugars down into the roots. A magnesium deficiency results in a plant with excessive leaf growth in relation to root growth and the sugars stuck in the leaf which makes the plant very light sensitive and reduces the potential of the plant to transfer Co2 via sugars to the roots and hence to the soil. As a main component of Chlorophyll it has a key role in the production of ATP the energy storehouse of the plant and activates more enzymes in the plant than any other nutrient. So magnesium is both a structural component of chlorophyll and needed for its bio-synthesis. 

    Soil analysis methodology

    To make an accurate assessment of soil levels of magnesium as well as the other major nutrient calcium a detailed soil analysis is of paramount importance for a healthy aerobic living soil and good major nutrient balance and the important ratio of Ca/Mg established by Dr William Albrecht A healthy soil needs to have a total of 80 per cent of the clay colloid dominated by these two nutrients with the ratio being dependent on the soil texture for example a heavy clay soil having 68 per cent calcium and 12 per cent Magnesium. The detailed analysis will also provide the CEC (Cation Exchange Capacity), organic matter content and sulphate levels as well as the percentage sand, silt and clay content and so can be used as a management tool to bring balance and harmony to the living eco system which is the soil.

    How to amend the soil levels?

    The soil amendments of these major nutrients are based on the liming agents either Calcium Carbonate or Dolomitic limestone depending on the results found on the clay colloid and what the soil texture is in any particular soil. Where the levels of calcium and magnesium are low Dr Albrecht stated that the liming agent needs to be applied in volume as with bulk lime. Raising the levels of these two major nutrients will optimise soil microbial life. However where levels are nearer to the optimum and for farmer convenience and easier spreading granular versions of these products are now available and so they can be used on an annual basis to keep soil levels at optimum for maximum yield continuously instead of letting levels drop and making amendments of these major nutrients every five years or so as was the practice in the past.

    However the situation on many farms is that Calcium levels are good and Magnesium levels low or very low. The only option in these circumstances is to provide essential magnesium using Keiserite Mg So4. When the Calcium levels fall the soil will need both calcium and magnesium, at which point it will benefit from the Ca and the Mg in Dolomitic lime which comes with a ratio of 2 parts Ca to 1 Mg. It must be noted that Keiserite supplies Magnesium in a soluble form and so will not build soil reserves on the clay colloid which is needed for optimum soil health.

    Essential points to note

    Ensuring that magnesium is at the optimum level for your soil type will enhance the availability of phosphorus and in particular locked-up phosphorus. Over 90 per cent of soil tests show P at very high levels. The shortage of magnesium may well be what has brought this situation about in the soils of West Wales. Releasing this phosphorus will increase the Brix index of the plant (sugar level) resulting in the plant having greater frost resistance and therefore a longer, more productive growth phase in every season. A detailed soil sample which guides us to the correct levels of these major nutrients is essential for efficient nitrogen use. This results in a reduction of the environmental impact of applying synthetic nitrogen fertiliser resulting in lower costs for the farmer and an environmental benefit: a win-win situation.

    Magnesium has a key role in the enzyme activity in the plant affecting 800 enzymes and has a similar role in the human body affecting 300 different enzymes including enzymes that bring about the phosphate transfer into ATP production. It can be termed as the key that starts the whole engine!!

    It is all about balance

    Excess Magnesium (Mg) will reduce the aerobic level of the soil and can lock-up Manganese (Mn) which can lead to Take-All in Wheat and too high a PH created by excessive levels of these two nutrients, Calcium and magnesium can reduce the availability of copper and zinc as well as manganese. Magnesium is particularly important in the reproductive growth phase ensuring optimum fruiting of the plant. It particularly benefits the growth of legumes. Magnesium uptake is usually between 10 and 25 Kgs per hectare per year, which is a similar amount to sulphur.

    Magnesium constitutes 50% of the plant’s protein level as the result of holding the Nitrogen in the leaf. Understanding the essential need for the adequate supply of magnesium in sucrose translocation is highly relevant for sugar beet and fodder beet production. Magnesium uptake can be inhibited particularly in acid sandy soils with high aluminium levels as well as hydrogen and manganese ions. High plant magnesium levels are needed in drought conditions or in soil with high potassium levels. The balance between potassium levels and magnesium levels is best in equilibrium in the soil. With excessive use of nitrogen under stressed conditions a magnesium deficiency can occur and research still needs to be carried out to find out why. 

    A shortage of magnesium in the crop can be amended by a foliar feed after flowering to boost seed formation and fill but is best repeated every 5 weeks. It is still not known to what extent magnesium status of crops must be raised to counter stress events which will undoubtedly increase with global warming. [2] as magnesium ensures a balanced plant with good root formation to support the above ground plant material.

    So magnesium can only be considered as being a major nutrient for optimum soil and crop performance and I suggest that we all take steps to monitor this nutrient for the more efficient use of nitrogen and to maximise carbon sequestration in the soil by carrying out a detailed soil sample using the Albrecht philosophy developed after 36 years of soil science research.

    The benefits for human health of adequate magnesium in the diet are such that we can boost our energy levels, have a clear mind, reduce stress, and with the stress related impact of the current health crisis yet to be assessed from the effects of lock-down and social isolation it is certainly highlighting the benefits of adequate magnesium in the diet. Research is suggesting that half the UK population are deficient and so the overall benefits to the well-being of the health of the people is paramount and farmers have the responsibility to ensure soils have adequate magnesium if they are to be considered custodians of the soil, the environment and the people they serve producing quality food for the nation.

    [1] Institute of Integrative and comparative biology at the University of Leeds

    [2] Cakmak and Kirkby 2007

    This article includes information from a conference organised by the International Potash Institute and the International Fertilise Society and Sabanca University in Cambridge, UK on Dec 7, 2007

  • Model Approach To Improving Soil Health

    The challenge for UK agriculture is to build a sustainable and profitable future under a changing support structure, and restoring soil health to vast acreages of farmland will be key.

    That’s certainly the view of Rob and Jo Hodgkins, who as educated selfstarters in the farming industry have experienced first-hand the damage reeked over recent decades by modern large scale agricultural practices. Both Nuffield Scholars and graduates of the Worshipful Company of Farmers’ Advanced Business Management programme, the couple are committed to a farming methodology that has soil health at its core. Their approach includes the integration of livestock back onto arable farms, with cover crops included in a rotation that can see as many as six profit-generating crops grown in a four year period.

    “We believe there is a sustainable business model that can work for a great number of arable farms, particularly where significant areas are compromised by poor soil health or by issues such as black-grass,” says Rob. “However, it requires a real change of mindset and a fully committed approach to be successful. “Through our own experiences, we’ve taken land with significant weed grass problems and poor soil structure – land that has been plundered for 20-25 years – and turned it around, making a decent return in the process.”

    Rob and Jo started with just 60 acres and 200 cull ewes back in 2013 and have now built their Kaiapoi farming enterprise that currently includes 1,600 arable acres and 1,000 acres of grassland in north Hertfordshire, all on Farm Business Tenancy agreements, and 2,500 New Zealand Romney ewes. They have developed a system with a four year arable rotation, alternating winter and spring crops to help combat the inherent black-grass infestations. Cover crops are grown in between winter and spring crops, providing over-winter grazing for ewes and finishing lambs.

    “We tend to follow a winter cereal with a cover crop mixture of 100kg/ha of winter oats and 5kg/ha of berseem clover, direct drilled into the stubble straight after the combine,” says Rob. “The earlier establishment makes all the difference and creates a forage crop that ewes and fattening lambs are turned onto from September.” Around 200ha of over-winter cover crop grazing is supplemented with an additional 80-90ha of stubble turnips grown on a neighbouring farm.

    “We like the stubble turnips for what they provide in terms of winter fodder but we’re in an area that suffers badly with flea beetle so find them very difficult to grow,” adds Rob. “Our neighbour grows a lot of winter barley, which allows earlier drilling of the stubble turnips and this seems to make all the difference in terms of establishment.”

    The combination of cover crops and sheep make a valuable contribution to soil health and fertility, adding an estimated 35-50kgN/ha of available nitrogen for the following crop, in addition to building soil organic matter. “We don’t aim to graze the cover crops to the ground as we prefer to leave some crop residue on the surface,” says Rob. “Overall, the cover crops offer great flexibility and create options “This year, for example, we’ve been able to establish winter wheat in January following the cover crop, effectively turning what would have been a spring crop into a winter crop. “That’s potentially going to be really beneficial this year looking at the value of winter cereals.”

    Sheep genetics

    Key to the success of the system, according to Rob, is having the right sheep genetics. He’s an advocate for the New Zealand Romney, a breed that he rates due to its low maintenance characteristics, resistance to foot rot and its ability to be lambed outdoors with minimal trouble, achieving 170- 180% lambing percentage. “Our system relies on a sheep breed that we can lamb outside, so we have little requirement for buildings, infrastructure and bought-in feed,” says Rob. “We also don’t need straw for bedding, and that’s good because we aim for around 90% of it to be chopped and spread to go back into the soil as organic matter.”

    Rob describes his sheep as ‘Arable Romneys’, and that’s because they fit around the arable system, with lambing taking place in the early part of April when there’s a window of opportunity between routine arable operations. Also, with cover crops that cost as little as £30-£35/ha to grow providing ample winter feed, there’s no compulsion to sell lambs off the farm early, so instead the strategy is to make the most of what are typically better prices for finished lambs in January and February.

    Quality grazing

    Another key element of Rob and Jo’s system are five-year herbal leys, grown as legume and herb rich pastures as part of a Countryside Stewardship Scheme. Within their 1,600 acre enterprise, around 300- 400 acres will be down to herbal leys at any one time, these providing all the grazing from lambing time though to September when the sheep move onto the cover crops. Whilst there are some restrictions around what is grown and how the leys are managed, there are significant support payments – in excess of £300/ha – and additional grants available to fund infrastructure.

    Specialist GS4 mixtures are supplied by Field Options and have been developed with maximum productivity as well as compliance as joint objectives. Testing is carried out at Field Options’ trials site at Harper Adams University, where the best performing mixture, Eco-Pasture, produced 1.3 tonnes of dry matter per hectare more than Field Options’ leading long term mixture. Put in terms of output potential, this equates to 1,300 extra grazing days or more than 300kg of additional liveweight per hectare.

    “With the leys unstocked over the winter, we are lambing on covers of 1,700 – 2,000kgDM/ha, which allows us to keep the ewes and lambs tightly stocked and this minimises the risk of separation. I’m sure this helps to boost lamb survival rates and – with the quality of grazing available – they do well. “We split fields into four or five areas with electric fencing, to rotationally graze, which maximises utilisation whilst also allowing us to comply with the requirement for a five week environmental rest period.”

    Adopting a model approach

    With Rob and Jo’s combined expertise, the Kaiapoi enterprise is developing into a sustainable and profitable business. It’s an approach that they believe has merit in the wider arable farming industry and they have demonstrated this through a comprehensively costed model.

    Taking a 1,400 – 1,600 acre arable unit as an example, they have shown how putting the least productive 300-400 acres into a Countryside Stewardship Scheme – and integrating cover crops into the remaining arable rotation – can create the platform for a 1,000 ewe enterprise. “We recognise the importance of expertise and have costed in a fulltime shepherd and also allowed for capital expenditure on vital equipment such as a handling system,” says Rob. “By taking advantage of Countryside Stewardship, and ensuring you have the right breed of sheep to complement the system, this can be a profitable way forward. “I think there are a lot of farms where the worst performing 15-20% of the arable acreage is generating minimal profit, due to issues such as poor soil health or weed grass infestations. Integrating livestock into the system in the way we’re outlining may well be the best way to go.”

  • New Us Cover Crop Information Map Centralizes Research And Farm Trial Data

    As interest and integration of cover crops accelerate across the world, the industry has been challenged in its ability to
    provide easy to access, comprehensive information. Recently, a cover crop application company in the USA called GO
    SEED have developed the Cover Crop Information Map to provide a free, centralized platform for knowledge exchange.

    “The Cover Crop Information Map is a free resource for agricultural producers, researchers and industry influencers wanting access to unfiltered, raw research data and methodology to help them translate and apply findings to their own trials and practices,” says Jerry Hall, director of research for GO SEED. Found on gocovercrops.com and featuring an interactive map of the United States, users can narrow down available research and farm trial findings based on their geographical region and topic of interest. For example, clicking on the topic section ‘Nutrient Management’ drops pins on the map where research and trials pertain to this topic.

    Clicking on an individual pin will take users to a summary page highlighting what the study was about before taking them to the full literature. “The Cover Crop Information Map currently has more than 200 pieces of research and trial summaries on 26 different topics such as compaction, forage for livestock and planting green. While the platform will be continued to be populated with previously published work, it also features the ability to add a pin, allowing individuals to add their own research and trial findings,” says Hall.

    For the last 10 years, Rick Clark of Clark Land and Cattle near Williamsport, Ind., has been integrating cover crops into his 7,000-acre corn and soybean farm to reduce inputs. His continued learning and adaptation of practices has resulted in a zerofertilizer input system and a nearly 50 percent decrease in farm diesel since 2011 without jeopardizing yield. An adamant proponent of planting green into living cover crops to maximize their nutrient contribution potential, Clark’s data is featured on the Cover Crop Information Map.

    “This platform is a great resource for producers wanting to get an idea of what is possible through the use of cover crops whether it be looking at published research or feature farm trials,” explains Clark. “The raw data provided will allow producers to adapt findings and management practices to suit their own unique geographical challenges and business needs to have greater success with their cover crops.” For Illinois corn and soybean farmer Andrew Reuschel of Reuschel Farms, the Cover Crop Information Map will be a useful tool to learn how other producers throughout the country are utilizing cover crops. A Soil Health Partnership Farmer, Reuschel and his father have been utilizing cover crops for nearly 20 years on their 1,200-acre farm near Golden.

    “We started with a very conservative approach to cover crops by planting cereal rye before soybeans to help control erosion. For a long time, we were like a ship without a compass – it took us a while to figure things out. Fast forward to present day and we are planting our corn and soybeans green, inter-seeding into corn and utilizing mixes with up to 30 species. This has been a gradual process through speaking to other farmers about their experiences and then implementing multiple farm trials to find out what worked best for our system,” says Reuschel. “I’m excited this resource has been developed to help educate people about what can be achieved with cover crops, and more importantly, linking them to onfarm implementation.”

    According to Rob Myers, Ph.D., a University of Missouri agronomist and regional director of extension programs for Sustainable Agriculture Research and Education (SARE), the Cover Crop Information Map provides a unique opportunity for users to identify research in their own area. “The Cover Crop Information Map has very helpful links to some of the research projects conducted on cover crops across the U.S. This should be a good resource for anyone seeking information on cover crops for their particular region or who wants to look at a sampling of cover crop projects from across the country,” says Dr. Myers. With a significant proportion of research being hosted behind paywalls, Hall says the Cover Crop Information Map will allow farmers to see what kind of research is being conducted outside their immediate area. “It is our hope and desire that the Cover Crop Information Map on gocovercrops.com can bring more transparency and, as a result, will lead to even greater creativity in future research projects both at the university and on the farm. By sharing knowledge, we all can learn so much more,” concludes Hall.