Category: News

Harmonisation of Carbon Accounting Tools for Agriculture – Webinar Replay

Watch a replay of this webinar held on the 11th September 2024 where representatives of the three major farm carbon calculators shared more details of the work they are doing together: Work to support UK agriculture to measure GHG emissions using the most up-to-date and accurate tools possible, harmonising the methodologies and outputs of their carbon calculation tools.

The three major farm carbon calculators featured in the Defra Report Harmonisation of Carbon Accounting Tools for Agriculture – SCF0129 who were Farm Carbon Toolkit, Cool Farm Alliance Community Interest Company and Agrecalc Limited – announced a collaboration earlier in 2024 by signing a Memorandum of Understanding (MOU), intended to harmonise the methodologies used in calculating the greenhouse gas (GHG) emissions from agriculture.

….. more webinar information to follow soon …..

Webinar Q&A

We received a great list of questions during the webinar event and teams from the various calculators will look to address those queries in due course.

Media contact: Kandia Appadoo (comms@coolfarmtool.org)


Three major farm carbon calculators outline a roadmap to harmonisation

The three major farm carbon calculators featured in the Defra Report Harmonisation of Carbon Accounting Tools for Agriculture – SCF0129 have announced a collaboration by signing a Memorandum of Understanding (MOU), intended to harmonise the methodologies used in calculating the greenhouse gas (GHG) emissions from agriculture.

Farm Carbon Toolkit, Cool Farm Alliance Community Interest Company and Agrecalc Limited have reached an agreement to work together to support UK agriculture to measure GHG emissions using the most up-to-date and accurate tools possible, harmonising the methodologies and outputs of their carbon calculation tools.

The three companies are looking forward to their joint work on this major challenge, to fulfil the requirements outlined in the comprehensive Report, compiled by ADAS throughout 2023. It is generally agreed that the overarching goal should be to reduce the overall greenhouse gas emissions  from agriculture through resource efficiency improvements,  optimising production practices and mitigating environmental impacts.

Liz Bowles, Farm Carbon Toolkit CEO, said:

We are not seeking to reach a point where all three calculators will produce the same answer for any given dataset. As the Defra report put it, “ there is no single ‘right’ answer”. Rather we are striving to make it possible for users to fully understand why different calculators produce different answers.

We plan to align with the Science-Based Targets initiative Forestry Land and Agriculture Guidance (SBTi FLAG) and draft Greenhouse Gas Protocol Land Sector Removals Guidance (GHGp LSRG) through our collaborative actions. This commitment underscores our dedication to maintaining high-quality standards and ensuring environmental sustainability in our operations, and in calculation outputs.

Scott Davies, Agrecalc CEO, said:

It is intended that we agree on a common set of data sources which all three calculators will use. All calculators can go beyond these baseline requirements, and all parties to this MOU will retain their commercial independence. We will also involve the relevant government and other organisations’ teams with our work plan as we develop it.

This collaborative approach supports a joint understanding of industry requirements and advancing consistency in our tools and methodologies. Our goal is collaboration with industry, trade bodies, and fellow calculator providers in the UK and internationally, so that we can actively contribute to the development of more consistent approaches to on-farm carbon calculation.

Richard Profit, Cool Farm Alliance CEO, said:

We are looking forward to this collaboration, as it will help align methodologies where that makes sense and that will especially allow us to look into new areas that require attention. How we then incorporate the new information in our calculators will vary from calculator to calculator as a result of our different base approaches.

We will also ensure that the tools include the latest and most robust scientific findings into their frameworks and roadmaps.

The calculators are seeking that this joint work become the “agreed way” and at some point, become a minimum required standard for all calculators to adopt. The companies will engage in consultations with Defra, Welsh Government, Scottish Government, and Northern Ireland Government to reach a practical and realistic form of ongoing validation of their harmonisation work.

Methodologies or other harmonisation solutions developed as a direct result of the MOU will be published transparently, or will otherwise be made available for others to use.

Although this MOU currently only involves the three major companies in this space, the group is open to other calculators joining the coalition so long as they publicly provide transparency in their Calculator methodologies. 

We will be holding a joint webinar on the 11th September 2024 at 1pm – 2pm to share more details of the work we are doing together. Please register here if you would like to join us

Notes to Editors

Farm Carbon Toolkit is an independent, farmer-led Community Interest Company, supporting farmers to measure, understand and act on their greenhouse gas emissions, while improving their business resilience for the future. 

The Farm Carbon Calculator uses the IPCC 2019 and UK GHG Inventory methodologies and is aligned with the GHG protocol agricultural guidance. Recent development has allowed us to provide greater interoperability with other data platforms through our Report Export API and Carbon Calculation Engine API. This represents a step-change in the industry’s ability to provide trustworthy carbon footprints with transparent methodologies on platforms where farmers already collect data, thus reducing the data inputting onus on farmers. This new functionality has been warmly welcomed by supply chain businesses who are now using our Calculation Engine to support their customers without need for further data entry. 

The Farm Carbon Calculator is used across the UK and on four continents with global usage growing at around 20% per year. 

For over a decade, Farm Carbon Toolkit has delivered a range of practical projects, tools and services that have inspired real action on the ground. Organisations they work with include the Duchy of Cornwall, First Milk, Tesco, Yeo Valley and WWF. The Farm Carbon Calculator is a leading on-farm carbon audit tool, used by over 8,000 farmers in the UK and beyond. To find out more visit www.farmcarbontoolkit.org.uk 

Media contact: Rachel Hucker (rachel.hucker@farmcarbontoolkit.org.uk; 07541 453413) 

Agrecalc, a carbon footprint tool developed by combining practical expertise with world-class agricultural science, is a precise instrument that offers both breadth and depth of on-farm and through-the-supply-chain calculations of GHG gas emissions.

Agrecalc is the largest source of collated farm benchmark data from thousands of farms, having been used as the designated tool to deliver carbon audits under various schemes since 2016. It is recognised as the preferred carbon calculator in many of the emerging government programmes.

With a mission to increase efficiency and business viability of food production, the scientists, consultants, and developers who work on Agrecalc, strive to constantly upgrade the calculator according to the most up-to-date available research results and recommendations.

Media contact: Aleksandra Stevanovic, Head of Marketing; (aleksandra.stevanovic@agrecalc.com; 07551 263 407)

Cool Farm Alliance Community Interest Company is a science-led, not-for-profit membership organisation (community interest company) that owns, manages, and improves the Cool Farm Tool and cultivates the leadership network to advance regenerative agriculture at scale.

For over fifteen years, the Cool Farm Alliance has worked to put knowledge in the hands of farmers and empower the full supply chain to understand and support agro-ecological restoration by providing a respected, standardised calculation engine to measure and report on agriculture’s impact on the environment. The Cool Farm Tool has established widely endorsed, science-based metrics for water, climate, and biodiversity, supported in 17 languages and used in more than 150 countries around the world.

Cool Farm Alliance members share the need for a respected, consistent, standardised, independent calculation engine and have joined the Alliance to ensure the Cool Farm Tool meets this need, now and in the future.  To find out more visit https://coolfarm.org/

Media contact: Kandia Appadoo (comms@coolfarmtool.org)

Net Zero Carbon Course for Upland Farmers & Advisors – Free Places Available in Cumbria

University of Cumbria is offering their part-time short course ‘Upland Farming for Net Zero’ delivered in partnership with Farm Carbon Toolkit, across 5 weeks from 9th September 2024. The course will take place in Cumbria, with sessions at the University of Cumbria’s Ambleside Campus, at upland farms across the county, and online. 

Participants will learn where and how greenhouse gases are emitted, captured and stored on an upland farm. Farm visits and theory sessions will enable a comparison of farming practices and land management options, with climate impact in mind. In-person workshops will build skills and confidence to enable each participant to complete a quantitative farm carbon audit and make practical recommendations for actions towards net zero emissions.

To apply for the course and for more information, please visit https://www.cumbria.ac.uk/study/courses/cpd-and-short-courses/upland-farming-for-net-zero-/

Up to 12 full bursaries, subject to eligibility, are offered by the Foundation for Common Land via their Our Upland Commons project, with details available here

Farm Carbon Toolkit supported the development of this accredited course for farmers, advisors and new entrants and worked with the University of Cumbria to enable delivery of the course for the first time earlier this year, in Dartmoor. Comments from participants included: 

  • It was really worthwhile and I’ve gained a lot of knowledge and practical skills from attending
  • Plenty of on-farm, real-world teaching and examples
  • Becky was a fantastic tutor- incredibly engaging and knowledgeable
  • Very hands-on and easy-to-follow material

What are Dung Beetles?

Dung beetles are fascinating creatures that play an essential role in breaking down dung, reducing greenhouse gas emissions and providing vital ecosystem services such as improving pastures, conditioning soils, and reducing parasitic burdens on our livestock. 

What are the types of dung beetle?

There are three basic groups of dung beetles: dwellers, tunnellers, and rollers. Dwellers live and reproduce within the dung, tunnellers create channels underneath the dung pat pulling dung through the soil and storing within the tunnels to eat and lay their eggs, rollers roll dung balls away and bury them underground.

Where can you find dung beetles?

Dung beetles are found on every continent except Antarctica. Their habitats range from desert to farmland to forest, owing their entire existence to dung from an equally wide range of animals. You’ll find most dung beetles in or around dung pats from herbivores that typically pass undigested plant material as well as liquid. Adult dung beetles tend to feed on the more liquid portion of the dung pat and dung beetle larvae will feed on the more solid portion. Hence, it’s important for the animals depositing dung to have a diet containing lots of fibre.

Dung beetles in the UK

There are around 60 species of dung beetle in the UK belonging to the tunneller and dweller groups – rollers are found in the warmer climate of the southern hemisphere. Some dung beetles are active during the day whereas some fly at night. Just like humans, dung beetles have preference when it comes to sniffing out food (dung). Some prefer dung from specific animals, some prefer dried dung as opposed to fresh and some are even picky when it comes to the location of dung within a field, however, mostly are generalists and will reside in any they can find.

What are the benefits of dung beetles?

It has been suggested that dung beetles can save the cattle industry around £367 million a year.

How?

Firstly, they increase soil nutrients. Fresh dung contains nitrogen, potassium and phosphorous; dung beetles eat, bury, and release these nutrients for the benefit of the surrounding soil biology, improving soil fertility and soil structure through channelling and drawing down organic matter. This can reduce reliance on fertiliser and makes much better use of our manures.

Secondly, dung beetles reduce pasture fouling. When dung isn’t removed from the field, the grass underneath it will die and the grass surrounding it will be unpalatable to livestock. If you scale this up, it removes a huge area for grazing as well as wasting an abundance of nutrients.

Thirdly, dung beetles are excellent at reducing pest flies from the activities of mites which are transported on the beetles’ bodies. The value of these organisms can be identified through reduced parasites on your livestock that ultimately impact milk yield and liveweight gains due to energy expended by the livestock to defend themselves or fight against infection. In both cases, dung beetles reduce survival of flies and parasites through competition of resources. 

Why are dung beetle populations in decline?

Unfortunately, despite the benefits of dung beetles, they are in decline due to the intensification of livestock systems – use of pesticides and anthelmintics. During the grazing season, dung pats could be broken down in a matter of days but instead, many lie rotting for a long time (and producing more methane emissions).

How can we encourage dung beetle populations?

Provision of dung is vital. If we’re able to outwinter even a fraction of our stock it provides a food resource all year round, attracting a more diverse array of dung beetle species.

Feeding livestock a more fibrous diet i.e. moving away from a grain-based diet can also help as it’s important to provide that partially undigested fibrous material.

Finally, long-acting anthelmintics can cause catastrophic loss of dung beetle populations. With veterinary support, frequent weighing of livestock and spot-treating animals  offers a more sustainable way of reducing anthelmintic use, reducing the wormer-resistance in intestinal parasites, and protecting dung beetle populations. 

How can we find out more about dung beetles?

There’s a wealth of information online about dung beetles, but to really get down to the detail, Farm Carbon Toolkit  is holding a two-day conference, in partnership with leading vets, dairy cooperative First Milk and Somerset dairy company Yeo Valley, on Tuesday 11 and Wednesday 12 June at Yeo Valley’s Holt Farm near Blagdon, south of Bristol. Event details and registration can be found here

Financial and climate impact of regenerative farming practices

Recently, we completed a piece of work with SOS-UK that presented the financial and climate impacts of different regenerative farming practices, based on the best available evidence we could gather that relates to the UK. The full report is available here and over a series of three articles, we’ve outlined the need for more of this work, the current evidence on the impacts of regenerative farming practices – and in this final article – we share our overall conclusions from this work.

What did we find out?

Overall, from the financial partial budgeting we carried out, we found a potential for margins to be maintained if not improved, from the adoption of some of the regenerative farming practices we looked at. Mainly though, only if SFI payments are included where they could be available.

Table 1: Regenerative farming practices and their financial viability, including external support where available
Table 1: Regenerative farming practices and their financial viability, including external support where available (organic maintenance payments not included). Source: Farm Carbon Toolkit (2024), Understanding the financial and climate impacts of regenerative farming practices. Report available here.

Typically, the adoption of more regenerative farming practices can result in lower yields, lower livestock stocking rates and lower output (without external support), especially where land is turned over to fertility building leys and reliance on artificial fertilisers is removed. Many studies in recent years have evidenced this, including the National Food Strategy. The extent of the challenge is unclear and from our assessment of the research; the current evidence base for any estimate on this is poor.

However, reducing input use can reduce business risk (vulnerability to input costs changes reduced with lower use). As more farmers learn how to implement more regenerative farming practices effectively the risk of reduced output will drop.

Confirming what is often cited anecdotally, there is also evidence that a transition period is required to allow soil and ecosystem health to improve so that it can function effectively with reduced or no chemical inputs. Depending upon the starting point, this can be up to five years, which highlights the need for support to bridge the financial gap, alongside other support for farmers as they acquire a new range of skills and knowledge. In England, the introduction of the Environmental Land Management Scheme provides financial support for the introduction of some key regenerative farming practices, such as growing cover crops and herbal leys. However, for more holistic changes to farming systems, such as moving to longer and more complex rotations including grass leys, it is less evident that the current financial support will facilitate this transition unless the farm has a profitable use for the grass and the individual crop gross margins are not compromised significantly.

There is also a cultural and social aspect to the acceptability of a transition to more regenerative farming systems which should not be underestimated. For instance, a more regenerative farm is often considered to be less “tidy”. Acceptability is increasing, especially where farmer networks exist to reinforce decision-making in favour of more regenerative farming practices. 

Practices which reduce greenhouse gas emissions

In the previous article, we introduced some of the broad sustainability impacts of different regenerative farming practices. Specifically on greenhouse gas emissions, many of the recommended ways to reduce farm greenhouse gas emissions are part of the suite of more regenerative farming practices, e.g.

  • Reducing the use of cultivations
  • Reducing reliance on artificial fertiliser (which can only be achieved when other more regenerative farming practices are in place which support enhanced soil health and fertility)
  • Changing feed sources for livestock away from reliance on imported protein sources such as soya- this is easier for ruminants than for young monogastrics
  • Maximising use of forage for livestock feeding

Adopting these practices generally reduces the emissions per hectare, due to various factors such as reduced synthetic fertiliser and fuel use, improved soil health and more efficient use of resources. However, lower yields and lower livestock stocking rates are a trade-off and this will ultimately impact the carbon footprint of the end product unless any associated increases in soil carbon removal are factored in. 

Typical, more regenerative farming practices include replacing fertiliser with legumes within cropping rotations and grassland; reducing cultivations for crop establishment; growing herbal leys; challenging received wisdom on the level of artificial fertilisers required by crops1 and the requirement for the use of insecticides. For livestock farmers, typical regenerative farming practices being adopted include reducing the use of supplementary feeds and keeping livestock grazing longer into the autumn, alongside practices to improve soil health and structure.

Financial viability of more regenerative farming practices

In our recent work with SOS-UK, we created partial budgets for the majority of the regenerative farming practices across a range of typical farm types: dairy, arable, mixed (non-dairy livestock and arable), lowland livestock and upland livestock.

In all budgets, costs were calculated on an annual basis. Input and sale values reflect prices in 2023 and are drawn from reliable industry sources. For future years the actual impact will be affected by changing prices and costs.

Whilst we are finding out more every year about the impact of many regenerative farming practices, which is helping to fill the information void, machinery manufacturers are also coming to market with improved equipment to enable some of the machinery linked regenerative farming practices such as reduced cultivation and intercropping/ companion cropping. These innovations are both reducing the cost (in some cases) for practice implementation and also improving the effectiveness of the practice itself.

A number of key issues surfaced which have a significant bearing on the introduction of these practices:

  1. Capital investment required: This is particularly relevant where specialist machinery and/or equipment is required. For instance, adopting minimum cultivations, intercropping and holistic grazing. For reduced cultivations, the need for more specialist drills is sometimes balanced by the ability to reduce the overall machinery inventory. In addition, Defra has made a capital grant available for some innovative items of machinery and equipment through the Countryside Productivity Scheme in the past, which reduces the initial capital required to adopt these practices. Other mechanisms to support access to appropriate machinery and equipment might be through machinery rings or syndicates or through third parties such as landlords underwriting the capital costs for these investments, or use of contractors.
  2. New technical skills required: It is clear that some practitioners have acquired the necessary skills to adopt regenerative farming practices with little or no yield penalty, which increases the financial viability of their adoption. As these skills become more common the adoption of these practices should increase. However, supporting a wider understanding of the skills and techniques required will accelerate adoption alongside an inherently better understanding of their financial viability.
  3. Linkage of the value of regenerative farming practices to the price of farm resources and inputs: Many of the regenerative farming practices described in our report involved a reduction in farming intensity. However, this can be difficult to implement when the cost of the key resources required (especially land) is high. There is no easy answer for this challenge, but many farmers will cite their need to finance their ongoing business to their adoption of more intensive farming practices, although external support for more sustainable farming is bridging this gap for some practices.

With support from SFI (in England), over 50% of the practices we budgeted show a neutral or positive financial impact, which is largely due to this support. The full report includes partial budgets for each practice together with the assumptions used to arrive at the budget outcome shown. It is intended that these budgets can be adapted to fit individual farm circumstances to enable farmers and growers to better estimate the impact of adoption on their holdings.

Recommendations

Our recommendations from this work are aimed at researchers, the Government and the industry itself:

  1. More research is required to provide clearer evidence of the impact of the adoption of regenerative farming practices on yield and output as this is seen as a key barrier to adoption by many farmers
  2. Increased support for farmers to build the confidence, skills and knowledge required for effective adoption of regenerative farming practices 
  3. Institutional Landlords provide transition support to tenants undertaking a whole farm approach to the adoption of regenerative farming systems, especially where more complex and longer arable rotations are a central theme of the transition
  4. Support the development of Machinery Rings or Syndicates to facilitate access to the type of equipment required to facilitate the transition to more regenerative farming systems

Footnotes

  1. It has been estimated that £397 million of artificial fertiliser is wasted each year in the UK due to over-application. AHDB Research suggests UK farmers could potentially reduce up to 50% of the nitrogen fertilisers on specific crops without seeing a significant reduction in yield.

The Impact of Regenerative Farming Practices: What Does the Evidence Say?

In the first of this series of three articles, we discussed the need to better understand the financial and climate impacts of regenerative farming practices. In this article, we summarise our recent work with SOS-UK (report available here), to contribute to this understanding. This article focuses on the practices themselves and the state-of-the-art regarding what we know about their impacts on farms.

What practices are we talking about?

We started with a focus on the five commonly cited principles of regenerative farming practice:

  • Minimise soil disturbance
  • Keep soil covered
  • Maintain living roots in the soil as much as possible
  • Maximise plant diversity
  • Integrate livestock

Then we assembled a list of typical farming practices which can support these principles, supporting a more regenerative farming system. In practice, we are clear that where these practices are adopted together, the impact will be greater.

  • Reduced tillage 
  • Introduction of Silvopasture
  • Enhanced hedge management
  • Introduction of herbal leys 
  • Replacement of monoculture ryegrass swards with grass/ clover swards
  • Holistic grazing
  • Maximisation of forage in dairy cow diets
  • Improved use of manures and composts
  • Introduction of cover cropping
  • Introduction of longer crop rotations
  • Retention  and incorporation of  crop residues
  • Introduction of Agroforestry
  • Intercropping/ companion cropping
  • Use of living mulches
  • Winter grazing of cereals

What’s the evidence for their impacts?

We assessed a range of evidence for the sustainability and financial impacts of the farming practices described above. Of the various papers and reports we assessed, we highlight two reports in this article, which we felt were helpful in bringing together evidence on sustainability impacts. First, the recently published paper by Maskell et al. 2023, Functional Agro Biodiversity: An Evaluation of Current Approaches and Outcomes. This paper contains some of the most up-to-date analysis of the state of the art and contains two key tables which are reproduced here. The first table assesses the strength of the evidence for the impact of key practices which are considered to support enhanced Functional Agro Biodiversity (FAB). This list shows that the strongest evidence for the impact of these practices is on soil health (>60% of practices have strong evidence for impact). By contrast, less than 20% of practices have any evidence of impact on crop yield. For water quality, biodiversity and control of pests and weeds more than 50% of the practices listed have strong evidence of impact.

Table 1: Strength of evidence for the impact of practices designed to improve functional agro-biodiversity (FAB). Source: Maskell et al. 2023.
Table 1: Strength of evidence for the impact of practices designed to improve functional agro-biodiversity (FAB). Source: Maskell et al. 2023.

The second table brings together findings from a wide range of research in recent years to identify the contributions of these farming practices to ecosystem service provision and farm management. Again, what stands out is the low level of reporting of any improvements in crop yield from adopting these practices. In general, the reverse has been found more commonly. Similarly, conflicting findings on the impact of these practices on GHG emissions are present. However, there is a clear consensus for the positive impact of the vast majority of the practices listed on pollination, biodiversity, soil and water quality, alongside flood regulation. In fact, all the elements of ecosystem service provision are enhanced through the adoption of these practices.

Table 2. Selected FAB measures and their contribution to ecosystem service provision and farm management.
Table 2. Selected FAB measures and their contribution to ecosystem service provision and farm management. GHG = GHG emissions. Source: Maskell et al. 2023.
Table notes: GHG= GHG emissions, SOC= Soil Organic carbon, ↓=Decrease; ↔= no significant effect, ↑= Increase. The cells have been shaded green (positive effect on ES), red (negative effect on ES), orange (mixed). Presence of multiple arrows indicates good evidence for different effects, often depending on specific context.

As a follow-up to the likely impact of these practices on soil carbon sequestration, we carried out desk research to identify the likely range in potential for some of these practices. We reviewed a report produced in January 2022, led by the Green Alliance for the Oxford Farming Conference, which reviewed the evidence for soil carbon removals and reduction in emissions following the adoption of some  “more regenerative farming” practices and land management changes. The authors reported a relative scarcity of robust data for the impacts on soil carbon stocks arising from a shortened range of farming practices. In addition, a large range of results was found from some practices (see Table 3), which makes it difficult to assign any specific level of carbon removal or reduction in emissions without measurement.

PracticeLand efficiency
tCo2e/ha/yr
Source of dataTotal UK potential
MtCo2e/yr
Assumptions
Paludiculture19.0 – 39.0*C Evans et al, 20172.0 – 4.1*25% of lowland peat drained for agriculture becomes paludiculture to meet CCC targets
Halving drainage depths for arable on peat12.7 – 18.9*C Evans et al, 20215.3 – 7.9*Drainage depth halved on all drained lowland peat
Agroforestry4.4 – 10.0(mainly tropical data so likely a lower range in the UK)D Kim et al, 20161.8 – 4.2Adoption at 416,700 hectares, A Thomson et al, 2018
Hedgerows3.1 – 7.3S Drexler et al, 20210.5 – 1.2Adoption at 168,200 hectares, A Thomson et al, 2018
Organic matter incorporation from residues or amendments-0.9 – 2.3 depending on clay content in soilC Poeplau et al, 2015-1.1 – 2.8Mid – range rate, adoption at a third of arable area
No till system as part of conservation agriculture0.3 – 0.6S Jayarama et al, 20210.4 – 0.7Mid – range rate, adoption at a third of arable area
Table 3: On-farm measures and their carbon sequestration land use efficiency. Source: Green Alliance (2022). The opportunities of agri-carbon markets. Available online.

Agroforestry and hedgerows are the best on-farm measures for carbon sequestration but will need management of woody biomass to sustain sequestration as the trees and hedges reach maturity. While soil carbon measures have low potential per hectare, and appear to be limited in terms of the length of sequestration possible, they have perhaps the highest potential for adoption whilst also keeping land in food production. 

In the next article, we focus on what we found out: which regenerative farming practices have the most potential for reducing greenhouse gas emissions together with the financial impact of their adoption.  You can also read the previous article on this topic here.

The Need to Understand the Financial and Climate Impacts of Regenerative Farming

It’s often cited that there’s limited, robust evidence for the financial and climate impacts of adopting more regenerative farming practices. This article explains our recent work to explore the evidence base and conduct financial analysis on regenerative farming practices.

Context

The UK market for ecosystem services, including carbon offsetting, has been developing rapidly over recent years in response to the growing urgency of the climate crisis and rapid loss of biodiversity1. With 70% of the land mass in the UK under agricultural production2, farmland managers are being encouraged and incentivised towards more nature-friendly farming practices. As such, new revenue streams are opening up, from public and private sectors, which are looking to meet statutory or voluntary greenhouse gas emissions and nature restoration outcomes3

Yet, it is still often cited that there is limited, robust evidence for the financial impact of adopting more regenerative farming practices. This uncertainty poses a significant obstacle to more widespread adoption4. Alongside the lack of robust evidence around the financial impacts of many regenerative farming practices, there is also often a knowledge gap which affects the effectiveness of practice adoption. This gap is being addressed as practitioners learn more, share their experiences, alongside greater research that’s happening on how best to implement these practices. It is certainly true that research into the impact of these practices in the UK is in its infancy, with farmers often leading the way in investigating their impact in the field.  

What we did

To respond to this challenge, SOS-UK commissioned the Farm Carbon Toolkit, using funding from NEIRF, to conduct financial modelling on the costs or benefits to farm businesses of adopting a range of regenerative farming practices. This work supports SOS-UK’s Farming for Carbon and Nature Project, providing a better evidence base to explore ‘carbon insetting’ opportunities for university and college farmland across the UK. Carbon insetting describes the approach when actors within a value chain collaborate to reduce the total greenhouse gas emissions, and may involve interventions in the financial relationship or transactions between those actors. 

This work builds on previous work that’s explored the financial implications of shifting to regenerative or agroecological farming (such as the Cumulus report for the Soil Association5) in two key ways. First, it gives granular data on specific regenerative farming practices, whereas previous modelling work was based on farm-level or food-systems level outcomes. Secondly, it incorporates payment rates for the recently confirmed Sustainable Farming Incentive in England (January 2024 rates). 

FCT approached this task through:

  • Evaluating the most up-to-date and comprehensive research into the carbon, climate and financial impact of the adoption of an agreed suite of farming practices considered as “regenerative”. 
  • Developing farm models for three key farming systems – dairy, arable and lowland beef and sheep farms based on data within the Farm Carbon Calculator database which enabled us to identify the impact on farm greenhouse gas emissions from adopting more regenerative farming practices and systems.
  • Developing partial budgets for the adoption of key regenerative farming practices using information from key industry sources and innovators in this space.

For the first time, we have been able to bring in real-world data from the Farm Carbon Calculator to demonstrate the impact of practice change on-farm GHG emissions. 

In the next two articles on this topic, we explore:

Footnotes

  1. IPCC (2022). Factsheet – biodiversity. Sixth Assessment Report: Working Group II – Impacts, Adaptation and Vulnerability.
  2. Office for Statistics Regulation (2024). Agricultural Land Use in United Kingdom at 1 June 2023 [website].
  3. Green Finance Institute (2024), Farming Toolkit For Assessing Nature Market Opportunities [website].
  4. Magistrali, Amelie at el. (2022) Project Report No. PR640-09 Identifying and implementing regenerative agriculture practices in challenging environments: experiences of farmers in the north of England. AHDB.
  5. Cumulus (2002). The Economics of a Transition to Agroecological Farm Businesses: Report for the Soil Association.

Soil Farmer of the Year 2023 – Farm Walk with Richard Anthony 

Written by Tilly Kimble-Wilde, Farm Carbon and Soil Advisor

Richard Anthony, of R & L Anthony near Bridgend, was awarded Second Place in the 2023 Soil Farmer of the Year competition. He was commended on how he responded to and managed challenges, never veering from thinking holistically, always upholding soil health as a priority, and treating each challenge as something from which to learn.

A majority arable business, Richard farms a 6-year rotation of wheat, maize, oilseed rape and westerwolds intermixed with a diverse array of cover and companion crops which he is passionate about. “The emphasis on farm is the soil, improving the soil and organic matter, and keeping a crop in the ground; keeping the soil biology alive.”

Richard and the team also strive to promote and create habitats for wildlife: planting wild bird seed mixes, establishing wildlife corridors, and bordering all hedgerows with a 3m margin to encourage growth year on year. 2m flower margins have also been implemented around all fields of oilseed rape which has been, to quote, “absolutely fantastic.” Encouraging insects and bees and getting the public on side too.

The farm walk itself took place on 23rd November 2023 and kicked off with a presentation taking us through the past year and outlining the various activities and obstacles the farm faced. We were then treated to a fantastic farm walk whereby Richard gave our group of visiting farmers, agronomists, and advisors a tour of some of what they get up to across their extensive arable and forage business.

A big part of what Richard and his team are trying to achieve across the farming business is to use very little bagged fertiliser. Most of the nutrients applied to the soil come from digestate, conveniently stored in the farm’s digestate lagoon. Tankers come in and fill alligator bags for easy transport and the digestate is spread on wheat, oilseed rape and maize.

So far, Richard has managed to eradicate artificial fertiliser when growing maize and OSR; however, wheat still receives a small amount of early application. This wouldn’t have been possible without the construction of the digestate lagoon, a project which was undertaken at the beginning of last year. Still, as Richard says, there is room for improvement. The farm is looking to reduce its N inputs even further by trialling an N inhibitor, all to build more resilience into the system.

This mindset has been applied to fungicides.  To use less, Richard has changed the sprayer to accommodate the wet and windy weather brought in from the coast. Now at 250cm spacing, the booms can run very low resulting in no drift even if it’s windy. This enables more spray days and a better chance at getting the timeliness right.

As with most farms across the UK, the weather has been the biggest challenge with dry weather in May and June, and then rain as soon as harvest began.

Luckily, Richard had installed a biomass boiler 6-7 years ago for grain drying after a very wet harvest having heard about them in Scotland. It has been a game changer. Their 1-megawatt biomass boiler provides a lot more spare heat than previous methods of grain drying where they used up to 1.2 megawatts of gas on one drying floor. In the old system, if they were on 25% moisture, it took 10 days to dry one side. With the biomass boiler on woodchip, they can dry 2 drying bays, double the output, and never have to run the boiler flat out. With the right combine (Richard uses a MacDon belt header), the corn is cut as soon as it gets to 25% and achieves good output, as Richard emphasises “do not wait”.

Planting OSR in August was a struggle, with some fields too wet to put a tine in and any cultivation out of the question. Instead, Richard planted the wet parts of the field by snipping the OSR with a sprinter drill and planting the dry parts with a farm standard drill and a top down.

To better manage the unpredictable weather, Richard has a selection of drills that he’s held onto rather than sell. The farm will run 2, sometimes 3 drills if they can, capitalising on days when they have the right weather. This was especially helpful during autumn when the farm received 295mm of rain in October alone.

The farm also spends a lot of time on drainage. Ditches are cleaned, dug out, drains put in; all with the aim of evening out patches in fields and making the farm more resilient. As Richard says, it’s great getting 16t/ha on wheat in a bit of field but if you’re only getting 3t/ha in another part because it’s too wet there is space to do better.

Still, the most used bit of kit on the farm is a spade.  By continually monitoring and assessing soil structure, Richard can make a well-informed decision when determining how to establish the next crop.

Farm Walk

During the farm walk, we were shown multiple cover crop and companion crop trials that were taking place on the farm. Steve Corbett from Agrii has worked with Richard for many years, trialling different varieties and combinations, highlighting the importance in being selective. You need good establishment, and it must earn its keep.

What they have found is that OSR, a “lazy rooting brassica”, completely lends itself to companion cropping, in this case with beans, spring vetch and buckwheat. Beans help to get the roots down as well as provide free nitrogen through nodulation. Spring vetch as opposed to winter vetch grows quickly providing biomass and N fixation. Buckwheat adds to the canopy, slowing down flea beetle, making it more difficult for pigeons to land, as well as mining phosphates. When the companion crops die, all the fixed nitrogen and phosphates will be released back into the soil ready for the next crop.

Richard deliberately plants OSR at low seed rates to encourage big branchy plants in spring which will grow away, allowing light through the canopy. By choosing thicker and well-branched OSR types, flea beetle is more contained, damaging only the outer leaves, leaving the middle to branch out. In Richard’s experience it provides a plant that will survive despite a pest living within it.

In terms of cultivation, Richard is a big fan of direct drilling. When direct drilling wheat, he believes it is important to see what is happening underground: what is the root depth? Taking stock of root depth and maintaining that attention to detail during crop growth is essential to determine the next steps in terms of cultivation. At Sealands farm, root depth is critical to survive the winds, Richard has found through monitoring that cultivation disrupts root growth, and that direct drilling fits his system best.

Ultimately, Richard has tried a lot which didn’t work out, but he’s kept at it. One outcome which has surprised him the most was the success of forage rye which he believes is underestimated. In the field, Richard showed us the root mass it was building and the excellent soil structure it yielded. This has provided Richard with an extra income stream, either taken for silage or grazed (ensuring to move stock on in wet conditions to avoid undoing all the good work he’s built up!).

Looking to improve the soil structure even further, Richard planted the forage rye together with westerwolds. He found that they were able to harvest the westerwolds a fortnight earlier due to the ability of the forage rye to get away in the spring creating its own microclimate which Richard believes benefitted the westerwolds.

Finally, we heard about Richard’s problem with persistent perennial ryegrass. In this instance, he introduced an annual ryegrass to outcompete the perennial. “Putting in a bully to outcompete a bully”. It worked and Richard is now able to include it within the arable rotation without generating a loss. This allows a rest period within the rotation to build fertility, stabilise soil structure and generate a bit of extra cash from silage or grazing. Essentially, Richard is maintaining the balance of farming resiliently: optimising soil health and crop yields while sustaining a viable business.

As we’ve all come to realise, we can’t rely on the weather, however, prioritising soil health as perfectly exemplified by Richard, can better equip us to respond and adapt. When we get to know our soils, monitoring how they behave in certain conditions and how they respond to our actions, we are better prepared and forearmed to make decisions that will affect future harvests and pocket.

Through trials and problem solving, Richard together with Steve have implemented more diversity and reduced inputs without damaging profits. A big resistance to straying from our well-known and “safe” rotations is often down to “how will it pay for itself”. Richard and Steve have shown that they’re not radical in their rationale for cover and companion crops, the bottom line is it has to pay. The most exciting take home from the day is they didn’t give up: they’ve found the right species to incorporate, the soil health on farm is improving and crop yields are directly benefiting. It was a truly inspiring day and a masterclass in perseverance. Richard hasn’t made it look easy by any stretch but as he puts it “we’re just learning all the time.”

You can read the full report here.

Farm Net Zero April 2024 update

Welcome to our April Farm Net Zero newsletter, sharing updates for our farmers, growers and the wider community this project supports.

(Image above: Dr Hannah Jones/FCT presenting at the ORFC)

Recent news and events

Oxford Real Farming Conference: January 2024

An intrepid band of Farm Net Zero farmers and project staff made their way to Oxford for the Real Farming Conference where we were presenting a session called “It Takes a Farm Community to be Net Zero: A Case Study from Cornwall”. This was a sell-out, with people queuing to get in, and helped to demonstrate the excellent work the FNZ farmers are doing as part of their communities. The film we produced was well-received, even earning a “whoop” from the crowd! It is available to watch here: https://farmcarbontoolkit.org.uk/2024/01/18/five-farms-in-cornwall/.

As well as the impressive range of sessions we were able to attend (covering everything from the role of vets in ecological sustainability to farm succession planning), we watched the premiere of “Six Inches of Soil” – a new film about farming starring Farm Net Zero monitor farmer Ben Thomas and featuring Farm Net Zero’s own Hannah Jones.

Premiere of “Six Inches of Soil”

Community film screening 25th March

On Monday 25th March, we showed the Farm Net Zero Community Film at Stoke Climsland Parish Hall. This event was very well attended by members of the local community, drummed up by Bonny Lightfoot and Martin Howlett, FNZ monitor farmers and stars of the film. Following the screening, there was a panel session with the farmers where attendees were able to ask questions on climate change, biodiversity and how the project farmers are working together to address these issues.

We ended the session with the farmers’ visions of farming in the future, with all agreeing that there will be more of a mix and integration between farming and nature.

Community film screening

“Filming on Your Phone” Workshop

We ran our second “Filming on Your Phone” workshop with Down to Earth Media just before Christmas. This gave a group of farmers the opportunity to learn about how to share their stories and the good work they are doing. Since the start of the project, 12 farmers have now received media training.

“Filming on Your Phone” workshop – Sam Roberts of Blable Farm being filmed!

Summaries of all these events, and many more, are available on the Farm Net Zero Project Resources webpage.

Agri-Carbon Kernow

The success of Farm Net Zero has led to a short project funded through Cornwall Council’s Shared Prosperity Fund, to work with farms in Cornwall on carbon, biodiversity and water management plans. This project is a collaboration between the Rural Business School, Farm Carbon Toolkit, Westcountry Rivers Trust and Cornwall Wildlife Trust. If you are a farmer interested in taking part, please contact agricarbonkernow@duchy.ac.uk

Falmouth Climate Change event

The Farm Net Zero team was present at the Climate Change Exhibition held at the Polytechnic (“the Poly”) in Falmouth on March 8th and 9th. The event, which was organised by Falmouth Rotary Club, was aimed at raising awareness amongst the general public. We were able to share some of our great work with passers-by, and as a result of our presence at the event, we have been asked to host a visit by two Cornish MPs this Spring.

Demo farm and field lab update

Inter-cropping cabbage

The inter-crop sampling for the cabbages has just been completed at Ennis Barton, one of our FNZ demo farms. This is a  collaboration between Andrew Brewer and Andy Williams of Riviera Produce Ltd. Soil samples have been sent away for assessment of soil organic matter, but it is the impact on soil aggregate stability, and water infiltration that is of particular interest in this short term winter cover crop. A mix of buckwheat , phacelia, white clover, plantain and chicory was broadcast between cabbages in 4 blocks across 4 fields and compared to the control treatment of no cover crop. More data to follow.

Winter cover crop between harvested Savoy cabbages ready for grazing until reseeding with grass in May.

Farm Net Zero maize trials

This is the second year of the FNZ – Innovative Farmers maize field lab.  This trial is evaluating the effects of different establishment methods, such as strip till and under sowing, on maize yield and soil health.  For example, at Duchy College the trial plans involve splitting a maize field between conventional establishment and reduced cultivation and then trialling undersown mixtures in the opposite direction across the field.

This year we have teamed up with Plymouth University who will be carrying out some more in-depth soil testing.  If you’re interested in taking part in the trials please do get in touch: info@innovativefarmers.org.

We have a meeting planned for the triallists and researchers on 3rd April near Bodmin.

More information on last year’s trial can be found here: https://www.innovativefarmers.org/field-labs/fnz-maize-field-lab/

Maize plants and bare soil

Diverse covers and leys to reduce worm burden at weaning

Weaning shock in lambs can cause physiological stress and slow growth rates.  But this effect could be offset by enhanced forage protein content.

Two of our monitor farmers, Matt Smith and Anthony Ellis, have teamed up with the Farm Carbon Toolkit to launch a new Farm Net Zero trial, examining the effect of protein rich cover crops on lamb growth rates. This Innovative Farmers field lab will test a bespoke chicory-rich mixture for lamb weaning.  The farmers hope it will improve growth rates, reduce lamb production footprint, improve soil health and lamb welfare, as well as reduce the need for wormers.  

For more information see the field lab page on the Innovative Farmers website: https://www.innovativefarmers.org/field-labs/diverse-covers-and-leys-to-reduce-worm-burden-at-weaning/

A chicory ley

Farm Net Zero field lab – herbal leys for dairy

This spring sees the launch of the Farm Net Zero and Innovative Farmers dairy field lab. In this trial Andrew Brewer, Farm Net Zero monitor farmer, will be exploring the question of whether different pasture species impact milk yield and constituents.

Andrew will split his dairy herd, grazing one group on standard ryegrass and clover leys, and the other on diverse swards/ herbal leys.  Forage samples will be taken ahead of the cows moving in to graze.  The milk yield and constituents from the trial cows will then be measured regularly throughout the 2024 growing season.

The project is being carried out in collaboration with the University of Bristol

and Cornwall Wildlife Trust and will deal with the big question many dairy farmers want answered. Dr Daniel Enriquez Hidalgo of University of Bristol, has been leading the study design and will be carrying out the results analysis. We are grateful to Andrew for all the extra hard work the trial will involve.

For more information on the field lab, see the Innovative Farmers website page: https://www.innovativefarmers.org/field-labs/fnz-herbal-leys-and-dairy/#

Conor Kendrew from Cornwall Wildlife Trust sampling forage at Ennis Barton farm

Dock Control Field Lab

Last years ‘How to rejuvenate pastures’ hosted by James Barrett has led to a new field lab. James rotaseeded a dock-infested grassland and destroyed docks just by addressing surface compaction.

Dock infestation of pasture

Calcium levels were also found to be at good levels in the soil. The new field lab will be recruiting up to 10 farmers, a field each, to test out the impact of optimising soil structure through mechanical intervention and the use of granular and foliar calcium application. Please contact a member of the FNZ team if you would like to be involved.

What next?

Workshop “Gardening & Trees” – with FNZ & Nourish Kernow,

Sunday April 21st,  1:30pm – 4pm, Higher Culloden Farm, College Road, Camelford, PL32 9TL

As part of our community engagement activities, Westcountry Rivers Trust’s Farm Net Zero team are joining Nourish Kernow for the project’s next climate-friendly gardening workshop.

Learn about the environmental benefits of planting trees, shrubs, and perennial plants alongside food crops. The event will include a hands-on soil health assessment that you can try at home, plus ideas to help you manage your garden to best sequester carbon and adapt to a changing climate, as well as boosting biodiversity.

We will be taking a look at the trees recently planted at the farm to support its habitat management plan and hearing about the inspiration and challenges behind the farm’s wider Community Supported Agriculture project to create a regenerative market garden on the edge of town.

Have fun as you learn about the environmental benefits of planting trees, shrubs, and perennial plants alongside food crops at home.

Book here

Farm Net Zero farm events

We will be continuing to run a series of Farm Net Zero events in 2024, drawing on the needs and interests from the community of farmers. These will be advertised on our website and through this newsletter. If you have any suggestions for events we could run, please let us know.

You’ll find a full range of relevant events on our website.
Click here to view our full events page

Getting in touch

As ever, if you have any questions or ideas that would further support the community of farmers that we are working with, please get in touch with the project team (contact details below).

All information about the project including upcoming events and resources are available on the Farm Net Zero website. If there is anything you would like to see featured please let us know.

This project, funded by the National Lottery Community Fund, is a partnership between Cornwall CollegeThe Farm Carbon Toolkit, Duchy College’s Rural Business SchoolWestcountry Rivers TrustInnovative Farmers and Innovation for Agriculture.

The Farm Carbon Calculator Update – October 2024

Farm Carbon Toolkit Team at annual field day - announcing update to Farm Carbon calcualtor

The calculator just got a little bit bigger and better

This October all calculator users will benefit from an incremental update to The Farm Carbon Calculator. We’re always looking and listening for ways to improve the tool – and in accordance with our annual development cycle we’ve added some as quickly as we can in this update.

The changes described below change our transparent methodology, and are listed in detail in an update note – read it

Image showing crops next to a simple calculator

© copyright Farm Carbon Toolkit – AI Generated

What’s new?

Calculated emissions adapt to reflect your crop management decisions

We know there are a wide range of practices around how crops are harvested or managed. Whereas before we relied on averages to calculate emissions here, now you can account for the specific way you manage each crop. The more detail you can enter, the more accurate your footprint will be.

The update applies to all crops – here’s some examples and the new ways the calculator estimates related emissions from these:

For agricultural crops like barley you can now choose from options relating to the amount of crop residue – you will see the following options:

  • Most of the barley straw left in the field
  • Half of the barley straw removed, half left in field (default)
  • Wholecrop or most of the barley straw removed from the field.

For your horticultural crops like potatoes you can also indicate what happened to residues:

  • Most of the crop residues left in field (default)
  • Most of the residues removed after harvest.

For green manures, temporary grasslands and cut forages select from the following:

  • Green manure with all residues left in field after mowing (default)
  • Forage crop with half of the residues foraged in place
  • Cash crop with all residues removed from the field.

Where you don’t have the detail to enter we revert back to a sensible default which suits the crop in question. So don’t worry – we’ve done this so the Calculator remains easy to use and crops can be entered just as before where needed.

Emissions now calculated from fruit crops

Until now the Calculator has accounted for fruit crops so yields can be recorded. Our research has reached a level of detail where we can confidently indicate emissions associated with this fruit yield – whereas before we could only account for sequestration from perennial fruit crops. 

Emissions are now calculated from the growing the fruits alongside detail on their management and their renewal rate where applicable. It is this level of detail that has allowed us to take this step – which we think greatly improves the calculator for fruit farms.

Log in to see emissions for: Blackberries, Blackcurrants, Blueberries, Cranberries, Gooseberries, Raspberries, Redcurrants, Strawberries, Apples, Cherries, Grapes, Hops, Kiwiberries, Nuts, Pears, and Plums.

Better record of the operations and activities on your farm

Accounting for fuel use and farming operations just got even easier. We’ve increased the amount of modelled emissions for different farm operations by working closely with industry professionals. 

If you don’t have all your fuel use figures but you know what farming operations you completed or contracted out, we’re confident you will be able to record this. Choose from 47 different activities like drilling, harvesting, soil preparation, bailing and much more. You’ll know the number of different types of operations needed on your farm – it’s likely that if you do it, we can help estimate emissions from it.

Here’s an example of the options now available under the general category of baling:

  • Running a bale wrapper
  • Baling by the bale – Small rectangular bales
  • Baling by the bale – Round bales
  • Baling by the bale – Heston bales
  • Baling by area ~250 Small rectangular bales per ha
  • Baling by area ~15 Round bales per ha
  • Baling by area ~7.5 Heston bales per ha
  • Baling by area (general).

More detail to capture your unique farm’s purchases and waste

More packaging can now be accounted for in your report. © copyright Farm Carbon Toolkit – AI Generated

We listened to feedback and added more options to help record unique purchases on your farm for your carbon footprint report. All farms are different so you may not see all these changes but here are the main additions:

  • There are more material items accounted for in our already extensive list; things like sheep hurdles; packaging used by dairy producers and in veg boxes; and a range of cleaning products, detergents and disinfectants
  • More items thrown away or disposed of can be simply accounted for by selecting options from our extensive list
  • If you produce your own hay and haylage this can be recorded, alongside silage and straw, feed and bedding. Following our updates to crops on-farm, this detail allows more of what you do to be recorded – though it doesn’t necessarily result in emissions calculations. You’ll find full details of what creates emissions within the calculator as you enter each item, and in our methodology and update note.

Your own feed haylage, silage, and more can be recorded in your report. © copyright Farm Carbon Toolkit – AI Generated

Better visibility of Greenhouse gas type and scope

When a report is downloaded in CSV or JSON formats you will now receive a more detailed split of greenhouse gas for each item on your report, which is also broken down by emissions scope. We’ve been asked for this from farmers and agricultural professionals using the calculator – often those reporting onward emissions to others in the supply chain looking for this detail. 

Your reports won’t change

We know consistent reporting is important to you so we have ensured carbon reports in our system will not automatically change because of this update. This means all your calculated figures will stay the same.

Do note however that if you modify an old report by adding items to it, or if you click ‘recalculate’ then your report will update in the relevant places based on this update. You may want to update it, particularly if you have crops in your report, as you may want to see changes due to the improved accuracies mentioned. 

If you want to preserve your old report but also change or build scenarios from it, you can lock your report so it cannot change and create a copy of any report from your dashboard to begin making alterations. Name these reports so you can easily tell them apart. Talk to us if you are not sure and we can advise you.

When is our next update?

These updates are scheduled to take place at least twice per year with an incremental update in Autumn and a larger annual update in Spring. 

We are here for farmers and users and our updates like this reflect all our priorities. We engage our farmer network and the Farm Carbon Toolkit team in the update process by gathering feedback on how the current version is working alongside suggested improvements. We order the feedback we receive by quality and what is achievable, and plan our next upgrade in accordance with our ongoing schedule.

We’d love to hear from you

Our friendly team can be reached to help answer your questions – talk to us.

Remember there are a range of resources for users of the Calculator and useful FAQs and videos too.

Your Farm Carbon Calculator Team – October 2024

Lizzy Parker – Calculator Manager

James Pitman – Calculator Development Officer

Grace Wardell – Calculator Development Officer

Izzy Garnsey – Data Scientist

Calum Adams – Calculator Data Assistant

Michael Brown – Customer Service Officer

Farm Carbon Toolkit – meet the team