News

New OFRF Grant Explores Best Practices for Virtual Peer-to-Peer Farmer Learning

December 17, 2020—In our national surveys of organic producers, we often hear from farmers that they consider peers to be the best source of information and guidance. In-person events such as farmer conferences also rate high on the learning scale. Unfortunately, the challenges of this year have severely restricted these opportunities. And, even in active organic communities, some farmers lack access to these networks due to cultural, language, and other differences. Virtual peer learning programs can offer a solution by providing networking opportunities among farmers, both during the immediate crisis and on an ongoing basis.

To increase understanding of how virtual peer-to-peer learning can help more farmers increase their knowledge and improve their practices, OFRF has awarded a grant to Sarah Brown at Oregon Tilth. Unlike traditional distance learning such as online courses and instructional webinars, these programs are explicitly designed to use web technology for the reciprocal sharing of knowledge, ideas, and experience among practitioners. The research team is focused on improving the design and delivery of virtual peer learning programs that support organic farmers to strengthen their economic viability and ecological sustainability—with the ultimate goal of helping more farmers start and succeed in organic farming.

Visit our research grant database for more information on this project. All results will be shared freely upon submission of Brown’s final report.

This announcement marks the last of 13 grants OFRF awarded this year to help address the top challenges facing organic farmers and ranchers. View a summary of our grant announcements here.

As a result of OFRF’s research, education, and outreach efforts, thousands of farmers have received pertinent research and training information. Results from all OFRF-funded projects are available to access for free in our online database.

Organic Farming Research Foundation
OFRF is a non-profit foundation that works to foster the improvement and widespread adoption of organic farming systems. OFRF cultivates organic research, education, and federal policies that bring more farmers and acreage into organic production. Overall, OFRF grant funding has advanced scientific knowledge and improved the practices, ecological sustainability, and economic prosperity of organic farming. All project results are shared freely. OFRF also provides free access to its educational materials and resources.

 

By |2020-12-17T20:44:56+00:00December 17th, 2020|News, Press Release|

OFRF and FFAR Fund Research on Enhancing Nutrition of Organic Potatoes While Building Healthy Soils

November 30, 2020 – Weed management, soil health, and the nutritional quality of foods grown organically continue to be high priority research topics for organic producers. The Organic Farming Research Foundation (OFRF) and the Foundation for Food & Agriculture Research (FFAR)  awarded a grant to Dr. Inna Popova at the University of Idaho to examine effective weed management strategies that promote healthy soils and nutritious potatoes.

Mustard seed meal, a byproduct resulting from crushing mustard seeds to provide oil, is an effective tool for controlling more than a dozen problematic weeds that damage crops by consuming necessary nutrients. Utilization of mustard seed meal on-farm has been challenging due to the high quantities needed to be effective as a biopesticide, resulting in excessive nitrogen levels. Too much nitrogen deters the growth and water efficiency of crops.

University of Idaho researchers developed an extract from white mustard seal meal that contains high concentrations of the biopesticide compound, allowing for reduced application rates and avoiding nitrogen overload. Dr. Popova and her team are evaluating the efficacy of mustard seed meal extract (MSME) on inhibiting weed seed germination (pre-emergent) and killing aboveground weed growth (post-emergent) while also determining the influence of MSME application on the soil microbiome in the field. Additional objectives include evaluating the influence of MSME on the nutritional quality of potatoes and assessing the efficacy of MSME to act as a pre-emergent and post-emergent herbicide against common annual broadleaf and grass weed species under greenhouse conditions.

These objectives will be tested through field experiments on certified organic farms and in greenhouse experiments. Laboratory analyses will be conducted to assess soil properties, microbiological function, and nutritional quality. The expected outcomes of the research include increased knowledge of the efficacy of MSME as a bioherbicide; adoption of MSME by organic and non-organic farmers as a weed management strategy; and positive environmental, economic, health, and social impacts to farmers and surrounding communities.

“Weed management is one of the biggest soil health challenges for organic farmers, especially in annual crops,” explained Brise Tencer, Executive Director at OFRF. “This research will add to the body of sound, science-based information on weed management strategies that do not undermine efforts to optimize soil health and fertility.”

“At FFAR, we are committed to funding bold science that has big impact. We are proud to fund this research that has the potential to improve the nutritional quality of potatoes while promoting healthy soil practices,” said FFAR’s Executive Director Dr. Sally Rockey. “This research supports thriving farms while building sound soil health practices from the ground-up.”

This grant is one of 13 OFRF is awarding this year to help address the top challenges facing organic farmers and ranchers. As a result of OFRF’s research, education, and outreach efforts, thousands of farmers have received pertinent research and training information. Results from all OFRF-funded projects are available to access for free in our online database.

Organic Farming Research Foundation
OFRF is a non-profit foundation that works to foster the improvement and widespread adoption of organic farming systems. OFRF cultivates organic research, education, and federal policies that bring more farmers and acreage into organic production. Overall, OFRF grant funding has advanced scientific knowledge and improved the practices, ecological sustainability, and economic prosperity of organic farming. All project results are shared freely. OFRF also provides free access to its educational materials and resources.

Foundation for Food & Agriculture Research
The Foundation for Food & Agriculture Research (FFAR) builds public-private partnerships to fund bold research addressing big food and agriculture challenges. FFAR was established in the 2014 Farm Bill to increase public agriculture research investments, fill knowledge gaps and complement USDA’s research agenda. FFAR’s model matches federal funding from Congress with private funding, delivering a powerful return on taxpayer investment. Through collaboration and partnerships, FFAR advances actionable science benefiting farmers, consumers and the environment. Connect: @FoundationFAR | @RockTalking

By |2020-12-01T21:12:50+00:00December 1st, 2020|News, Press Release|

Webinar: Reducing Production Risks through Organic Soil Health Practices for the South

November 20, 2020 – Organic producers in the South face tremendous challenges from weeds, pests, diseases, increasing weather extremes, and rising production costs. This webinar explores the potential of soil restoration and improvement to reduce these risks, stabilize yields, and build resilience. We will focus on three key soil health issues: cover cropping for plant-available nutrients and moisture, reducing tillage intensity, and frugal use of nutrient-bearing amendments. The webinar will be presented by Mark Schonbeck, and Emily Oakley of Three Springs Farm in Oklahoma will be online to answer questions.

January 13th, 11AM PST
Free and open to the public. Advance registration required.

Register here

Mark Schonbeck is a Research Associate at OFRF. He has worked for 31 years as a researcher, consultant, and educator in sustainable and organic agriculture. He has participated in on-farm research into mulching, cover crops, minimum tillage, and nutrient management for organic vegetables. For many years, he has written for the Virginia Association for Biological Farming newsletter and served as their policy liaison to the National Sustainable Agriculture Coalition. He has also participated in research projects to analyze, evaluate, and improve federally funded organic and sustainable agriculture programs. In addition, Mark offers individual consulting in soil test interpretation, soil quality and nutrient management, crop rotation, cover cropping, and weed management.

Emily Oakley co-owns and operates Three Springs Farm, a diversified, certified-organic vegetable farm in eastern Oklahoma. With her partner Mike, she cultivates over forty different crops and more than 150 individual varieties on three acres of land. Their goal is to maintain a two-person operation that demonstrates the economic viability of small-scale farming.

 

By |2021-05-18T20:07:20+00:00November 20th, 2020|News|

The election is over, but the work starts now

November 17, 2020 – With a new administration moving into the White House, it is more important than ever to make organic voices heard. OFRF has delivered a transition letter to the Biden-Harris Administration with a list of action steps they can take immediately to increase support of organic agriculture at the U.S. Department of Agriculture (USDA). We have developed a set of concrete policy recommendations for Congress and are meeting with USDA to ensure our research recommendations are prioritized.

The election is over, but the work starts now.

Organic agriculture must be part of the climate solution.

Through regenerative organic practices that build soil health, farmers can more easily weather the storms and extreme temperatures that have become our new normal. Together, practices such as cover cropping, crop rotations, and conservation tillage work with nature to build healthy soil and help mitigate climate change by capturing and storing more carbon and reducing greenhouse gas emissions. It is critical for federal policies to support producers adopting these practices and promote the expansion of organic acres.

What we are doing

OFRF has spent the last five months working closely with partner organizations to align on key priorities and strategies, writing public comments and extensive blog posts, strengthening our coalitions, and developing research and policy recommendations in preparation for the first 100 days of the next Administration, future climate bills, and the 2023 Farm Bill.

We are investing more resources into funding on-farm research to foster climate mitigation and adaptation, developing grower education resources to support the adoption of best soil health practices, and advancing our four-part policy platform to ensure that any federal level climate policy includes support for organic farmers and ranchers as critical partners in our climate change mitigation efforts.

To enhance regenerative organic agriculture’s potential to address the climate crisis, Congress needs to:

  • Increase investments in organic agriculture research.

  • Remove barriers and strengthen support for organic systems.

  • Promote the widespread adoption of organic agriculture through technical assistance and financial incentives.

  • Expand research to advance our understanding of organic farming practices that sequester carbon, reduce greenhouse gas emissions, and build resilience, as well as identifying barriers to adoption.

OFRF encourages the Administration and legislators to ensure sustainable and organic farmers and ranchers have a seat at the table as climate policy discussions continue to develop. We encourage Congress to use the Agriculture Resilience Act (HR 5861) as a roadmap for comprehensive policy proposals that expand and improve existing USDA programs so agriculture can fulfill its climate mitigating potential and be part of the solution.

What YOU can do

  • Buy organic! The best way to build momentum and show policy makers that organic farming matters is by building demand.

  • Now is the time to learn more about these issues by reading the latest blog posts and exploring our climate advocacy toolkit.

  • We hope with your newfound knowledge you will share this information with your community on social media and around the dinner table.

  • Learn more about how your Members of Congress normally vote on issues of climate change and agriculture. Find out who represents you in Congress by searching a database by your zip code or state. OFRF will share opportunities to get engaged with policy makers and make your voice heard.
  • Donate to OFRF and other organizations who are working tirelessly on these efforts. We can’t do this work without your support so we encourage you to give what you can today to ensure 2021 is the year we begin to curb climate change and better support organic farmers.
By |2020-11-17T18:15:14+00:00November 17th, 2020|News, Press Release|

Managing Organic Fertility on Diversified Organic Farms

Farmer Spotlight #1, on the benefits of cover cropping, held in Woodland, CA with organic farmer Jim Durst and researcher Eric Brennan

November 10, 2020 – Building healthy soils is the foundation of successful farm management. However, efficiently managing soil fertility remains a challenge for organic farmers. Determining how much organic fertilizer to apply—and when—is a complicated process: too much can pollute the air and water, and too little limits crop productivity. In Yolo County, CA some organic farmers are reducing their reliance on organic fertilizer inputs by implementing diversification practices such as cover cropping, crop rotations, and intercropping to increase soil health and fertility.

 

These diversification practices add nitrogen to the soil in the form of organic nitrogen, which can then contribute to building soil organic matter. Organic nitrogen sources and soil organic matter must first be broken down by microbes living in the soil for nitrogen to become accessible to plants, in contrast to synthetic fertilizers or certain OMRI fertilizers like guano, which are already mainly available to plants as ammonium or nitrate. At present, it is difficult to quantify the rate at which nitrogen becomes available through the breakdown of organic nitrogen sources and soil organic matter. Most traditional soil tests were developed for conventional systems and measure only the amount of ammonium or nitrate sitting around in soil; they do not capture the dynamic flows of nitrogen released by microbes. As a result, it remains difficult for most organic farmers to determine when and how much nitrogen is available to their crops, especially if they are mainly relying on diversification practices to improve soil health and supply nitrogen.

To address this challenge, OFRF funded a project led by Assistant Professor Tim Bowles and Ansel Klein at the University of California, Berkeley to quantify the flow of nitrogen from soil organic matter to plants on working organic farms. The project team combined experiential knowledge of organic farmers with technical measurements of nitrogen flows in their soils to understand how varying levels of diversification affected the availability of nitrogen. In addition to assessing the extent to which organic farmers in this region rely on organic fertilizers, the researchers wanted to investigate how well traditional soil tests reflect the actual flow of nitrogen on diversified farms. They also aimed to facilitate farmer-to-farmer knowledge sharing of diversification practices that promote healthy soils.

By interviewing organic farmers who had already implemented a range of diversification practices, the project team developed a system to rank on-farm diversification for the 13 organic farms that participated in the study. Farmers who participated in this project incorporated varying levels of crop diversification in their fields. Not surprisingly, the level of plant-available nitrogen ranged greatly from farm to farm.

Due to a number of unforeseen challenges associated with the COVID pandemic and wildfires in California, the research team is still in the process of analyzing the nitrogen flow data. The researchers completed preliminary analyses that confirm their methodology works and they plan to use this approach to describe how diversification practices may be linked to how nitrogen moves through organic farms.

So far, the researchers were able to measure plant-available nitrogen directly and preliminary results indicate that some organic farms have low levels of plant-available nitrogen, despite having high levels of crop diversity. One explanation could be that much of the nitrogen in the system is tied up in soil organic matter and therefore is not detectable by traditional soil testing approaches. As the researchers continue to complete nitrogen flow lab analyses, they hope to shed more light on this finding.

In addition to lab research, Bowles & Klein also collaborated with organic farmers to create a farmer spotlight series where growers shared their insights into how to successfully implement cover crops and the importance of soil microbes for soil health. They are also finishing two podcasts in collaboration with The Farmers Beet, an agricultural podcast hosted by the Community Alliance for Family Farmers. Once data analysis is complete, production will begin on a short, informational video highlighting the outcomes of this project.

Results from the final report can be accessed here.

This article was written by Lauren Snyder, PhD, Education & Research Program Manager, OFRF

 

 

By |2020-11-11T20:17:52+00:00November 10th, 2020|News, Press Release|

Organic Crop & Seed Breeding for Adapting to Climate Change

October 20, 2020 – Most modern crop cultivars have been bred and selected to perform well in conventional farming systems over wide geographic ranges. As a result, organic farmers have relatively few options for purchasing regionally adapted cultivars suited to organic production. When OFRF conducted a national survey of organic producers for their 2016 National Organic Research Agenda, respondents commonly stated the need for increased on-farm plant breeding and variety improvement for organic seeds. In response, OFRF has awarded four new grants to support researcher/farmer collaborations in the areas of crop breeding and organic seed development.

The first grant to Sarah Hargreaves at the Ecological Farmers Association of Ontario supports three breeding projects focused on providing best practices for adapting to climate change with vegetable varieties that are locally adapted to low-input organic systems for southern Ontario and the Northeast U.S. By supporting farmer-led breeding efforts for organic production, this project contributes to an emerging but critically under-researched area of vegetable farming. Ultimately, the research team hopes to release three varieties of early ripening, blocky, and flavorful bell peppers: a mass-selected population of red peppers, and uniform populations of red and yellow peppers using progeny lines. They also aim to breed an open pollinated broccoli variety that is heat tolerant and adapted to organic systems, as well as an open pollinated seedless English cucumber with excellent flavor and good yield that is adapted to organic greenhouse conditions.

The second grant to Helen Jensen at Seed Change supports the evaluation of selection methods and efficacy in on-farm breeding of organic wheat and oat varieties. Participatory plant breeding (PPB) is internationally recognized as a methodology that works collaboratively with organic farmers to minimize environmental impacts and adapt to climate change. This project will document how farmer-selectors have contributed to genetic improvement for organic production of wheat and oats and share that information with existing and prospective PPB participants across the country. The researchers hope to improve knowledge of selection practices for all of the stakeholders in the program, as well as improve methodologies and increased adoption of PPB by a broader range of organic farmers.

The third grant was awarded to Carol Deppe at Fertile Valley Seeds to breed disease-resistant heirloom-quality tomatoes, especially those resistant to late blight and a number of other diseases. The project aims to enable the wide distribution of seeds that allow organic farmers and gardeners to easily develop their own heirloom-quality tomato varieties with resistance to common diseases.

The fourth grant to Lee-Ann Hill at Rocky Mountain Seed Alliance will look beyond the marketability of heritage grains to explore their impact on soil health, climate adaptivity, weed pressure, and insect pressure through farmer-driven, participatory research. Research data collected from this project will be published in the Heritage Grain Trials Handbook, freely distributed online, and disseminated to grain trialists and interested growers to increase and enhance knowledge about these unique varieties. With this project, the research team expects to increase the availability of 20 unique heritage grain seed varieties.

These grants are four of 13 OFRF is awarding this year to help address the top challenges facing organic farmers and ranchers. As a result of OFRF’s research, education, and outreach efforts, thousands of farmers have received pertinent research and training information. Results from all OFRF-funded projects are available to access for free in our online database.


 

By |2020-11-04T17:47:10+00:00November 4th, 2020|News, Press Release|

Research Addresses Structural Barriers to Building Soil Health

Aysha Peterson in field

Aysha Peterson in field

November 3, 2020 – Organic farming systems are knowledge-intensive and require farmers to understand a wide range of agroecological practices to build soil health, the foundation of a successful farming system. Yet, the current structure of U.S. agriculture makes it difficult for racial minority farmers to access educational resources and technical assistance programs. These challenges are exacerbated for Latinx farmers who may not speak English as a first language. In the U.S., the number of Latinx farmers continues to increase, even as the total number of farmers decreases. Therefore, providing resources for this farming community is critical to creating a more equitable food system and for ushering in a new generation of diverse farmers.

In 2019, OFRF awarded a research grant to Aysha Peterson at the University of California, Santa Cruz to understand this issue in California’s Salinas Valley. In this region, rural Latinx communities contend with water resources contaminated with excess nitrogen. The lack of access to clean water supplies impedes this farming community’s ability to build healthy soils as too much nitrogen contributes to poor nutrient management practices on their fruit and vegetable farms.

Peterson collaborated with The Agriculture and Land-based Training Association(ALBA)—a local farmer training facility that supports socially disadvantaged, limited resource, and beginning organic farmers—to interview Latinx farmers about their knowledge and use of nutrient management practices, the barriers they face, and their strategies for overcoming these challenges. The goal of the project was to produce a case study highlighting the barriers to implementing plant-based nutrient management practices that could be used to improve regional farmer assistance services across the country.

Data from focus groups (small group discussions) and field observations revealed farmers have extensive knowledge of organic soil health practices such as cover cropping, but there are a number of challenges that hamper the widespread adoption of this practice. For instance, farmers in the Salinas Valley indicated a need for more information on which cover crops or combination of cover crops they should grow. They also shared concerns about the best time to plant cover crops to maximize their benefits, without taking the field out of production for too long. In addition, farmers explained that soil tests can be difficult to interpret and integrating the outcomes of these tests into a plant-based nutrient management plan is not straightforward.

The farmer participants also identified a number of structural challenges to implementing organic soil health practices. For many farmers in this region, financial capital is limited, making it difficult or impossible to take a field out of production for a few months to plant cover crops, which are not marketable. In addition, many of the farmers who participated in this study rent land for relatively short periods of times, which limits their ability to invest in long-term soil health strategies such as cover cropping. Language barriers also impede the implementation of best organic soil health practices; organic product labels, soil test results, and website and workshop content on organic agriculture are typically delivered in English. As a result, Spanish-speaking farmers are excluded from spaces where they could learn more about organic nutrient management practices.

The outcomes of this study can affect change at multiple scales. Regionally, the results can guide education and outreach programs supported by local organizations. The economic, educational, and infrastructural challenges identified through this project justify national programs and policies to increase access to financial assistance, bilingual sources of information, culturally appropriate modes of knowledge sharing, and access to land. Addressing these structural barriers is critical to creating a more equitable agricultural system.

The full report can be found here.

This article was written by Lauren Snyder, PhD, Education & Research Program Manager, OFRF

By |2020-11-11T20:18:49+00:00November 3rd, 2020|News|

The Climate is Changing and We Need to Act Now

October 26, 2020 – This year we’ve seen devastating wildfires across the West, hurricanes in the South, and a derecho in the Midwest destroy farmland and severely impact farmers. And we know these weather-related events are not random.

Organic agriculture provides a climate solution. Through regenerative organic practices that build soil health, farmers can more easily weather the storms to come. Practices such as cover cropping and minimal tillage work with nature to build healthy soil and help mitigate climate change by capturing and storing more carbon in the soil and reducing the release of greenhouse gases. This is why it is critical to support organic farmers and others using sustainable practices with the most up-to-date research, science-based educational materials, and federal policies that incentivize the adoption of organic agriculture and support the success of existing organic farmers.

Are you with us? Together we can create the change we want to see. But we can’t do it alone. 

We have a big year planned. OFRF is working with policy-makers and the USDA to educate and advocate for more climate-friendly agriculture with specific policy and research recommendations. We will add to our suite of free educational materials that emphasize underserved areas such as the Southeast region. With partner organizations, we are conducting virtual focus groups across the country to hear directly from organic and transitioning farmers about their challenges, and so much more. We’re in a pivotal moment and we are looking to you, our community, to be part of the solution and support the next phase of our work.

For some in our community, these are very tough times. If you are able to contribute, we encourage you to donate what you can now. Please consider setting up a sustaining or legacy donation that supports our work long-term, and share what we do with your friends and family. Every donation helps.

It’s time to stand up for our farmers and farmworkers, our food system, and our environment. Please be part of the solution.

Consider donating today to ensure 2021 is the year we do more to curb climate change and bring significantly more acres into organic production.

All the best,

 

 

 

 

 

 

The OFRF team

By |2020-11-04T20:51:14+00:00November 3rd, 2020|News|

Did you know there are many ways to support organic farmers?

October 14, 2020 – Each day our small and mighty team works tirelessly to fund innovative organic research, provide the most up-to-date, science-based, farmer-led resources to farmers, advocate for organic farming as a climate solution in Washington, DC, and educate consumers about best organic farming practices.

Over our 30 year history, we have been inspired and motivated by the ongoing support of our community and the many ways they contribute to our work. Long-term support such as sustaining gifts, bequests, and donating stocks, not only supports us today—it enables us to plan and allocate resources for the work ahead of us. For that, we are truly grateful.

We are extremely proud to do this work, but we can’t do it without your support. We don’t charge membership dues or collect association fees. We fundraise for every dollar, and we make sure those dollars go directly to on-farm research, educational programs, and advocacy on behalf of organic farmers and ranchers. When you give to OFRF, we provide organic farmers the information and resources they need to be successful. For free. 

So, let’s explore the many ways you can contribute to OFRF. While most people give through our online donation page, there are other options that provide even greater stability to our work. No matter how you give, we are so honored to be part of your giving story. Your gift ensures that organic farmers are supported with unbiased research, up-to-date free educational materials, and federal advocacy that fights for their needs.

Sustaining Donation – By setting up a sustaining gift, we can better plan for future work since we have a clear idea of our financial stability. Whether it be weekly, monthly, or quarterly, our online donation page allows you to ensure you can give on a regular basis.

Bequests – There’s no better way to show your support of organic farmers and the fight to curb climate change than naming OFRF in your will. Bequests offer a huge tax benefit as they are fully deductible from your estate. You can add the bequest when updating your will or when writing a new will. If you have chosen to leave a bequest to OFRF, please let us know so we can plan ahead. We look forward to honoring your commitment to our work. 

Donor Advised Funds (DAFS) – Donor Advised Funds are like your own individual philanthropic fund that handles the administration of charitable contributions, all while receiving an immediate tax deduction. OFRF can receive DAF funds through electronic transfer or check. 

Stocks – Giving stocks allows you to give more than you might normally in cash. It’s easy to do using our simple form or if you have a Donor Advised Fund. Stock donations also allow you to avoid capital gains tax. 

Retirement funds – If you are 70 years or older, you can transfer Qualified Charitable Distributions (QCDs) directly from your IRA account to OFRF. QCDs are excluded from the taxable income from your retirement account. The process varies depending on the retirement fund you hold, so we suggest researching or discussing with your tax professional. 

Vehicles – Do you have an old car or vehicle that you are itching to get rid of? You can donate it to OFRF using Car Easy. They handle all of the paperwork, pick-up your vehicle and provide OFRF with the donated value.

Now that you’ve learned about all the ways you can give, what are you waiting for?! We are in a pivotal moment, where together we can advance best organic practices that build soil health and curb climate change. Organic agricultural practices are a climate change solution, so we hope you can donate today to help us bring more acres into organic!

If you have any questions or want to discuss these options, please send Haley Baron, our Partnership and Development Manager an email at give@ofrf.org. Thank you!

 

By |2020-10-15T16:14:09+00:00October 15th, 2020|News|

Creating Climate Resilient Organic Crop Production Systems

October 8, 2020 – The rising temperatures and changing rain patterns associated with climate change have created an urgent need to increase resiliency in our crop production systems. OFRF provided a research grant to Dr. Erin Silva in the Department of Plant Pathology at the University of Wisconsin – Madison (UW-Madison) to examine the ability of Arbuscular Mycorrhizal Fungi (AMF) to enhance soil moisture retention and increase access to nutrients.

An important aim of organic production is to improve overall soil health. AMF form symbiotic relationships with the roots of host plants through which plants receive nutrients. AMF also indirectly promote plant health through their contribution to soil building. Thriving AMF communities increase the water-holding capacity of soils through the deposition of proteins. This project sought to determine whether the genetic variances between popular cultivars of carrot would promote the growth of different AMF communities over the growing season and alter the quantity of AMF-associated proteins in soils.

The researchers evaluated the role of carrot cultivar on AMF-related proteins, an important factor influencing soil health improvements related to AMF communities. The project was done in collaboration with six organic farmer members of the Fairshare Community Supported Agriculture (CSA) Coalition in Wisconsin during the 2017 and 2018 field seasons.

Silva’s recently submitted final report shows that while there were no obvious trends toward increases in AMF-associated soil proteins that correlated to any cultivar of carrot, most sites had moderate changes in protein quantities from spring to fall (with no clear pattern). One site had consistently increased fall quantities of AMF-associated proteins compared to spring quantities for all cultivars for both years (2017 and 2018). The research team also observed more intensive weed management at this site. Storm-related flooding impacted some farms during the project, causing considerable losses at multiple sites.

According to the research team, the project provided important preliminary data in two areas that warrant further research. First, particularly among open-pollinated cultivars, it would be beneficial to screen diverse genotypes for enhanced AMF colonization, to be used either directly by farmers or included in breeding programs. Second, preliminary data shows some interesting interactions in the role of AMF in increasing soil proteins, with their role in enhanced soil aggregation in highly disturbed environments. The team suggests it be valuable to further investigate the role of cultivar selection and AMF inoculation on soil aggregation in heavily tilled/cultivated phases of the organic crop rotation, and in intensive vegetable production.

Outreach included reports to the farmer cooperators, as well as presentations at organic vegetable field days. As a follow up to this work, the researchers aim to use sequencing technology to identify the AMF community constituents present in samples obtained during this project. This data may be used to correlate species or genus abundance with soil protein quantities to identify whether specific communities contribute to greater protein deposits in agricultural soils.

Read the final report here.

By |2020-10-08T21:33:53+00:00October 8th, 2020|News|
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