California Ag Network

Tag: Soil Health

  • Can Growers Store Carbon by Changing their Water?

    What if Central Valley Farmers could sequester carbon in their soil by only changing how they treat their irrigation water? That is the question driving a new $500,000 study at Fresno State. If 400,000 acres — 10% of the irrigated acres in California — adopted this practice, over 30 million tons of CO2 could be stored in soil through the water every year, as estimated by the research study’s hypothesis. Currently, less than 1% of the acreage in California is using it.

    “Soil health is what brought me to California, and this study is exactly the kind of work I came here to do. A simple change to water treatment could have a meaningful impact on soil health and carbon sequestration, and this research will help us understand that potential,” said Dr. Sangeeta Bansal, assistant professor of plant science at Fresno State and the principal investigator.

    The study is the largest and longest farm-scale investigation of CO2 in water treatment ever conducted, spanning three years on six working pistachio farms in California’s Central Valley. The California Energy Commission provided primary funding, with support from F3 Innovate.

    ECO2MIX, a Fresno-based agriculture company, is providing the water treatment for the study. Their equipment dissolves CO2 into irrigation water to produce carbonic acid, primarily to adjust water pH.

    “I started ECO2MIX because I saw the damage sulfuric acid was causing to farms and people, and I knew there had to be a better solution, and carbonic acid was exactly that. This study will finally help us understand the additional benefits after water treatment. If this can sequester carbon across the Central Valley through the water, that is a big deal for California sustainability,” said Waldo Moraga, CEO and President of ECO2MIX.

    High-pH irrigation water is common throughout the Central Valley and affects the health of soil and plants. Correcting water pH addresses many problems simultaneously. Carbonic acid also offers a safety advantage over current practices. Other acids are corrosive to equipment and require specialized handling and safety. On the other hand, carbonic acid, the same compound that gives sparkling water its bubbles, is safe to handle.

    “We are always evaluating what tools are available to us as farmers and what they can do for our operation. If the water we are already using can do more for the soil and increase profitability, we want to know about it,” said Joe Coelho, a farmer participating in the research and the Director of Sustainability and Member Outreach for American Pistachio Growers.

    About ECO2MIX

    ECO2MIX provides water pH control as a service by dissolving CO2 in water. The company designs, installs, and operates on-site reactors that treat irrigation water, which supports nutrient availability and efficient irrigation with additional soil health and sustainability benefits. ECO2MIX serves production agriculture and golf customers across high-pH water regions of the United States. For more information, visit www.eco2mix.com. For interviews or farm visits, contact Waldo Moraga at cherbert@eco2mix.com or call 559-321-7917.

  • Fourth Annual Organic Field Day Returning to Cal Poly on July 23

    The Grimm Family Center for Organic Production and Research at California Polytechnic State University will host its Fourth Annual Organic Field Day on Thursday, July 23, 2026, at Cal Poly’s Organic Sandbox on Highland Ave. The free event is open to the public and designed for farmers, agricultural professionals, students, and anyone interested in organic agriculture.

    The Organic Field Day offers attendees hands-on access to ongoing student-led research in organic nutrient and pest management, a workshop with the Coalition for Food Safety and Sustainability, and a discussion of trap crops for flea beetles and cucumber beetles. Participants can expect guided field tours, live demonstrations, and direct conversations with Cal Poly researchers and faculty working on practical solutions for organic producers.

    “The Grimm Organic Center Field Day is an opportunity to see the next generation of

    agricultural innovation in action. Attendees will hear directly from Cal Poly students researching soil health and pest management while engaging with experts on practical topics, including trap cropping, food safety, and sustainability. Whether you’re a grower, advisor, student, or industry professional, you’ll leave with ideas and connections that can be applied immediately.” — Matthew Grieshop, Director of the Grimm Family Center for Organic Production and Research (mgriesho@calpoly.edu)

    “The Grimm Organic Center Field Day is a great event with educational sessions on key topics that are critical for organic farming – organic nutrient management, organic pest and disease management, and understanding soil health. These sessions are all presented by Cal Poly students involved in conducting the research. I believe the information presented will be of interest to the whole organic farming community.” — Ramy Colfer, True Organic Products (rcolfer@true.ag)

    The event follows the Strawberry Center Field Day, also held on July 23 at Cal Poly. Attendees should register for each event separately.

    Registration is free and open to all. Registration and sponsorship links can be found at

    organic.calpoly.edu/field-day-2026

    Event Details

    Date: Thursday, July 23, 2026

    Time: 1:00 PM – 4:00 PM, immediately following the Strawberry Center Field Day.

    Location: Cal Poly Organic Sandbox, Highland Ave., Cal Poly campus.

    Free Event Parking: H1 Lot, Mount Bishop Rd.

    Cost: Free and open to the public.

    For more information, please email Matthew Grieshop, director of the Grimm Family Center for Organic Production and Research, at mgriesho@calpoly.edu, or visit organic.calpoly.edu/field-day-2026. — Story contributed by the Grimm Family Center for Organic Production and Research

  • USDA Invests up to $310 Million in Partnership Projects

    The USDA announced that it is investing up to $310 million to expand producer conservation activities across the nation through the Regional Conservation Partnership Program (RCPP). USDA’s Natural Resources Conservation Service (NRCS) is accepting RCPP project proposals now through Aug. 24 to help farmers, ranchers and forest landowners boost their operations and conserve natural resources.

    “This significant investment through the Regional Conservation Partnership Program will further enable us to leverage our partnerships as force multipliers in supporting America’s farmers,” said NRCS Chief Colton L. Buckley. “We’re looking forward to seeing the results on the ground while we also work to keep working lands in working hands.”

    The Working Families Tax Cuts Act is delivering the largest long-term investment in NRCS conservation programs in decades, including support for RCPP. It will deliver $425 million in fiscal year 2026 and an increase to $450 million from fiscal year 2027 through fiscal year 2031.   

    RCPP is a partner-driven approach to conservation that funds solutions to natural resource challenges on agricultural land.

    In the past year, NRCS has improved RCPP by streamlining partnership agreement processes and increasing flexibilities to ensure the program works more effectively for conservation partners and America’s farmers and ranchers. Now, 75% of the funding goes directly to the American farmer or is used to cover the cost of conservation practice implementation.

    About the Program

    There are two separate funding opportunities:   

    • RCPP Classic: Projects are implemented using NRCS contracts and easements with producers, landowners and communities in collaboration with project partners.   
    • RCPP Alternative Funding Arrangements (AFA): The lead partner works directly with agricultural producers to support the development of innovative conservation approaches that would not otherwise be available under RCPP Classic.

    NRCS ranks proposals based on how they address the following priorities:

    • Addressing soil health, water quality or wildlife habitat with an aim to improve land health, enhance resource management and promote sustainable agriculture and long-term protection of agricultural, grassland, and forestland viability.
    • Soil health projects using practices that focus on minimizing soil disturbance, maximizing soil cover, increasing natural vitality and maintaining living roots throughout the year.
    • Leveraging precision agriculture technologies to target conservation efforts based on specific field conditions, potentially reducing costs and improving resource efficiency.
    • Focusing on Farmers First projects, especially those that provide technical and financial assistance via contributions for planning and practice designs to support producer contracts.
    • Supporting projects led by Indian tribes.

    More Information

    The $310 million is available for both RCPP Classic and AFA projects, including $30 million set aside for projects with Indian tribes.

    Details about RCPP Classic

    and RCPP AFAs

    are available on Grants.gov.  Project proposals for RCPP are being accepted through Aug. 24 on the RCPP portal

    . For more information about RCPP, visit the RCPP website.

    This investment builds on other recent NRCS investments to engage partners to extend the reach of conservation. In late May, NRCS announced its plans to invest $65 million through Conservation Innovation Grants. 

    For more than 90 years, NRCS has helped farmers, ranchers and forestland owners make investments in their operations and local communities to improve the quality of our air, water, soil, and wildlife habitat.  NRCS uses the latest science and technology to help keep working lands working, boost agricultural economies, and increase the competitiveness of American agriculture. NRCS provides one-on-one, personalized advice and financial assistance and works with producers to help them reach their goals through voluntary, incentive-based conservation programs. For more information, visit nrcs.usda.gov.

  • Dry Farming with Tomatoes

    In the summer of 1993, I visited the two small farms on the campus of UC Santa Cruz (UCSC). One of them was a flat, sunny site near the coast, the air pleasantly warm instead of blistering hot like further inland. The tour guide showed us a field in which small, round, bright-red tomatoes peeked out from brown, withered, un-staked vines. I felt appalled to see a UC growing tomatoes so incorrectly.

    The tour guide then extracted some of the red globes from the brown rubble of vines and gave each of us one to try. The juicy tomato erupted with deep, complex flavor and sweetness. Feeling disloyal to the Jersey tomatoes I had enjoyed every summer growing up, I had to admit that this was the best tomato I had ever tasted. It still is 33 years later. I happily revised my opinion of the UCSC farming methods.

    The tour group leader explained that the tomatoes were dry farmed, meaning that they were grown with only the water that the soil absorbed the previous winter. The tomato vines did not need staking because the dry surface of the ground was inhospitable to harmful insects and fungi.

    The lack of water concentrated the flavor and sugars into a smaller volume. As researcher, Yvonne Socolar said at a recent dry farming webinar, “Dry-farmed tomatoes and grapes taste incredible, and consumers are willing to pay for that. But most dry-farmed crops don’t have a quality bump, so it is not a slam dunk for dry farming.”

    Dry farming concentrates rich flavor in the tomatoes. Photo by Berkeley Food Institute

    However, dry farming is getting more attention across California as growers look for ways to farm in a water-constrained environment. But what does dry farming actually involve, where does it work well and what are the tradeoffs?

    The dry farm webinar, sponsored by the Berkeley Food Institute, dug into those questions. Socolar — one of two presenters — noted that the changing climate is making the water supply in California less predictable, and 16% of California’s main groundwater systems are running dry.

    As in other Mediterranean climates, rain falls mainly in the cool winter season and typically not at all in the summer growing season. Dry farming of tomatoes occurs in coastal areas but potentially could work in parts of the western foothills of the Sierras. By contrast, the inland valley floors are too hot and dry.

    Socolar presented a map of suitable locations for dry farming in California that she generated based on interviewing dry-farm tomato growers. The map can be seen in her research paper at Where dry farming could work in CA. Fortunately, the high priority water areas do have land suitable for dry farming.

    Researcher Yvonne Socolar of Berkeley Food Institute conducted a study on dry farming. Photo by Berkeley Food Institute

    How Do the Plants Survive?

    Socolar explained that dry farming is inherently a diversified farming system, with cover cropping and hedgerows complementing the crop. The plants need deep roots in soil that holds moisture. Organic matter from cover crops is central for holding water and creating a conducive microbiome.

    Although not widely used yet, biochar can also hold water, and it does not break down, so it might help even in years when the cover crop does not thrive. Cover crops, however, also provide nutrients. Foliar sprays also may be used to distribute micronutrients.

    Eight of the 10 farmers who Socolar interviewed also rotate crops, but two do not, growing tomatoes repeatedly (10 years in a row and counting), or switching between tomatoes and fallow.

    Socolar wrote in her article, “These management decisions to maintain fields as dry farmed rather than rotating irrigated crops through are particularly compelling in light of recent research on many of the same fields, showing that repeated seasons without any external irrigation result in soil microbial communities that are associated with improved dry farm tomato performance.”

    Water Savings

    The dry-farm methods used in California come from Greece and Spain, which have the namesake Mediterranean climate. Whereas the average water consumption for irrigated crops on typical dry-farm land is roughly 3 acre-feet per acre, most dry-farm tomato growers use between zero and ten inches of water.

    Socolar estimates that nearly half of the water of the Shasta reservoir could be saved — 776 billion gallons/year — if all the potential dry farmland were dry farmed.

    Built-In Pest Control

    Because the surface of dry-farmed soils is dry during the growing season, weeds, pests and diseases have a harder time gaining a foothold. That lessens the need for labor. “Weed seeds need water to germinate, so they don’t emerge as easily, and fungal diseases that thrive in moisture do not have the conditions they need to take hold and spread,” Socolar described.

    But Socolar cautions that not all that potential dry-farm land is ready to be dry farmed immediately. Rehabilitation with cover cropping and incorporating green manure may take years before the field reaches the level of performance needed to dry farm.

    For farmers renting land, the lease term would need to be at least ten years to make the investment in soil benefits worthwhile and so the farmer can get to know the fields. The grower also needs a market willing to pay the quality premium.

    Socolar notes that some farmers have also found nuts and orchard fruits to be desirable options to add to tomatoes and grapes for dry farming. “These crops have similar market appeal and quality premiums, making them economically viable,” Socolar wrote. Olives, too, being from the Mediterranean area are traditionally dry farmed, and were grown without irrigation until the 1970s. Globally, by far most olive oil crops are still dry farmed, according to Leandro Ravetti of Cobram Estate Olive Oil.

    Whatever the crop, the current dry farmers are paving the way for viable options for other California farmers as the squeeze on water tightens.

    — By Nancy Power, Assistant Editor

  • Secretary Rollins Announces New Priorities for Research and Development in 2026

    U.S. Secretary of Agriculture Brooke L. Rollins has signed a Secretary’s Memorandum that puts forth a focused effort to establish new priorities for future research and development activities funded by the U.S. Department of Agriculture (USDA) to strengthen U.S. Agriculture for farmers and consumers.

    The American farm economy suffered under failed Biden-Harris Administration policies that drove up inflation, created a weak trade agenda that resulted in no new trade deals for American commodities, and propagated crippling overregulation. Further, misguided policies focused on DEI and environmental justice in agricultural research, extension, and education programs diverted resources away from solving actual programs that American farmers and ranchers are facing.

    Since January, the Trump Administration has been working nonstop to strengthen the farm safety net, create new export opportunities for American commodities, lower the cost of critical agricultural inputs, and root out DEI from all USDA programs. However, strategic investments in agricultural research and development will help American farmers and ranchers increase profitability while continuing to provide consumers with the safest, most abundant, and most affordable food and fiber supply in the world for decades to come.

    “When he created the People’s Department and the land-grant university system in 1862, President Lincoln had a vision for American agriculture rooted in agricultural innovation and education. Since that time, research coming from USDA and our colleges of agriculture have successfully helped American farmers and ranchers address countless challenges,” said Secretary Brooke Rollins. “The priorities we are announcing today further reiterates President Trump’s commitment to put Farmers First and provides our agricultural researchers with a strategic roadmap to help keep our producers at the forefront of productivity.”

    New Research and Development Priorities:

    Moving forward, new research and development activities funded by USDA will be focused on projects that address one or more of the following priorities that put Farmers First:

    1 Increasing Profitability of Farmers and Ranchers: While research to increase productivity has allowed American farmers and ranchers to provide the safest, most abundant, and most affordable food and fiber supply, the volatility in profitability of American agriculture leads to significant uncertainty for producers. Research and development that results in increased profitability—such as reducing inputs or increasing mechanization and automation—will benefit American farmers and ranchers.

    2 Expanding Markets and Creating New Uses of U.S. Agricultural Products: With many producers experiencing record yields this growing season, it is more important than ever to ensure USDA is expanding markets and creating new uses for these American-grown commodities. Research and development that seeks to open new markets—such as generating science and data to resolve longstanding sanitary and phytosanitary trade barriers—or expand the utilization of these commodities in novel biobased products and bioenergy (including biofuels) will result in increased demand.

    3 Protecting the Integrity of American Agriculture from Invasive Species: The resurgence of New World Screwworm in Mexico, continued westward expansion of the Spotted Lanternfly, persistence of Highly Pathogenic Avian Influenza in poultry flocks, and decimation of our domestic citrus industry due to citrus greening are just a few examples of how invasive pests and diseases threaten American agriculture and natural resources. Research and development focused on new and effective methods for preventing, detecting, controlling, and eradicating these threats is a top priority for USDA and the security of U.S. agriculture.

    4 Promoting Soil Health to Regenerate Long-Term Productivity of Land: American farmers and ranchers are the original conservationists as no one stewards their land more than those whose entire livelihood, and that of their successive generations, depend on it. Research and development that promotes soil health practices, increases water-use efficiency, and reduces inputs will ensure farms and ranches remain productive for generations to come.

    5 Improving Human Health through Precision Nutrition and Food Quality: Substantial and increasingly robust evidence shows that a healthy diet can help people achieve and maintain good health and reduce the risk of chronic diseases throughout all stages of life. Rigorous research on precision nutrition is needed to better understand how healthy dietary patterns impact people at the individual level with the goal of more targeted nutritional recommendations to encourage healthy choices, healthy outcomes, and healthy families. Additionally, research and development on increasing the nutritional content and quality of foods will lead to increased demand for American agricultural products.

  • New Webinar Series by CAFF and UC Aids Farmers Transitioning to Organic

    Farmers seeking guidance on starting or advancing their transition to organic crop production are invited to attend free webinars led by a wide range of experts, including University of California scientists and fellow growers.

    Held at noon every Wednesday from Jan. 14 to March 18, 2026, the “Transition to Organic Webinar Series” covers the certification process, market dynamics, soil health and soil amendments, pest and weed management, and other key topics of organic production. Participants are encouraged to attend all sessions but can choose any webinars that are most relevant for them.

    Learn more and register; attendees also can choose real-time Hmong or Spanish interpretation for each session.

    The 10 online sessions – each comprising a 75-minute presentation and discussion, followed by optional office hours – are organized and sponsored by the Community Alliance with Family Farmers, UC Cooperative Extension, and the UC Organic Agriculture Institute (an institute of UC Agriculture and Natural Resources).

    “This is the first time UC ANR is partnering with CAFF to offer such a series focused on transition to organic,” said Margaret Lloyd, UCCE organic agriculture and small farms advisor for Yolo, Sacramento and Solano counties. “Ultimately, we hope to provide the resources, community and support to folks who want to make a successful transition.”

    California leads the U.S. in the number of organic farms, land in organic production and organic sales. In 2023, there were more than 3,300 organic producers in the state, according to the latest California Department of Food and Agriculture report.

    Organizers designed the webinars to appeal to producers across California and to directly address issues that a variety of agricultural operations face.

    “This series brings together technical assistance providers and farmers to explore the full range of challenges producers face when transitioning to organic – from certification and market considerations to management practices, biodiversity, recordkeeping and inspections,” said Grace Jackson, the Central Valley regional lead for CAFF’s Farmer Services team.

    Series addresses challenges of certification, market dynamics, pest and weed management

    Another organizer, Katharina Ullmann – training and technical assistance coordinator at the UC Organic Agriculture Institute – said that demand for more information was quite apparent during workshops held this past year throughout the state, from Siskiyou County to San Diego.

    “Standalone workshops are great, but there is a lot of information to cover in a two- or three-hour workshop,” Ullmann said. “We thought it would be helpful to have a longer, regular series, where we would have a whole hour to dig into a specific transition topic.”

    The lineup of presenters – available on the registration page – reflects a diverse mix of perspectives on organic agriculture, encompassing firsthand farmer experiences and the latest scientific research.

    “We have farmer panels; we have people who work with certifiers, and organic inspectors; we have UCCE advisors and specialists who will present as part of this workshop,” Ullmann said. “Over the past three decades, many individual farmers and other partners like the UC Santa Cruz Center for Agroecology, the CCOF [California Certified Organic Farmers] Foundation and the Ecological Farming Association [EcoFarm] have provided training on transitioning to organic production. We are excited to add to that body of work.”

    She noted that the series covers many of the topics mentioned by respondents to the Organic Agriculture Institute’s statewide needs assessment survey. In addition to crop production challenges and market concerns, growers emphasized the need for support on certification processes and related paperwork (such as the Organic System Plan) – topics to be presented on Jan. 21.

    Aside from this new series on topics about transitioning to organic, Lloyd and other UCCE advisors are continuing an annual online Organic Agriculture Seminar Series on specific aspects of organic production. Details for those webinars, scheduled for Tuesdays at noon in 2026, will be posted on Lloyd’s website.

    Registration and information on the “Transition to Organic Webinar Series” can be found at: https://actionnetwork.org/events/transition-to-organic-webinar-series-for-crop-producers/.

    The series is made possible through funding from the California Department of Food and Agriculture State Organic Program, the CDFA Office of Agricultural Resilience and Sustainability, and the United States Department of Agriculture Transition to Organic Partnership Program.

    UC Agriculture and Natural Resources brings UC information and practices to all 58 California counties. Through research and Cooperative Extension in agriculture, natural resources, nutrition, economic and youth development, our mission is to improve the lives of all Californians. Learn more at ucanr.edu.

    To read more UC ANR news, visit our newsroom at ucanr.edu/News.

  • Didn’t Get Much of a Cherry Crop This Year? This Might be Why…

    Some Central Valley cherry growers grappled with little to no yields this year. Cherries are notoriously a high risk crop, but can be highly profitable when they yield well. Unfortunately, that was not the case for some Central Valley growers this year. But how could this have happened? UC Cooperative Extension Fruit & Almond Advisor Raymond Mireles met with Matthew Malcolm on California Ag Network to explain. Watch this brief interview and read more about it in the coming issue of California Fruit & Vegetable Magazine.

    Please thank this video’s sponsor Simplot Grower Solutions for their industry support.

  • Oakville Bluegrass Cooperative Opens Enrollment for Reimbursable Cover Crop Seed

    Oakville Bluegrass Cooperative is pleased to announce open enrollment for the USDA’s newly expanded Advancing Markets for Producers (AMP) program—building on last year’s successful Partnerships for Climate-Smart Commodities initiative. This year, the program is expanding direct funding to producers, and the new incentive will reimburse producers for the purchase of up to ten acres worth of seed for any perennial conservation cover.

    One choice for the incentive, Oakville bluegrass, is dormant from April through September and doesn’t compete with cash crops for water or nutrients making it ideal for California permanent crops. This low growing, drought tolerant cover crop will last over ten years when well managed, significantly reducing labor and input costs for growers.

    As part of the USDA’s AMP initiative, producers can now access:

    • Full seed cost coverage for up to 10 acres of Oakville bluegrass
    • An additional $100/acre incentive for up to 100 acres.
    • Support in the form of a grower’s guide, educational field days, and guidance on carbon removal credits.

    “We’re thrilled to put more money in producers’ hands under the Advancing Markets for Producers program, ” said Jeff Thiel, Director at Oakville Bluegrass Cooeprative. Perennial cover like Oakville bluegrass can reduce operating costs over time while also building soil health and conserving water. We’re especially excited to help producers tap into the growing carbon credit market while establishing a proven, cost-effective cover crop.”

    Interested growers can attend an online informational session on October 21 at 11 am by registering at https://bit.ly/ampobc25 or visit https://www.obc.ag/advancing-markets-for-producersfor more information.

    The Oakville Bluegrass Cooperative collaboratively creates solutions to the most pressing challenges facing growers. Members work together to uncover best practices in sustainable agriculture tailored to the needs of specialty crop growers. Learnings are shared so all members can benefit from adopting practices that will ensure the long-term sustainability of profits from their farms.

  • Kemin introduces RevoCURB™, a new safe and versatile soil treatment tool to address agricultural issues such as restrictions on fumigants and the requirements for buffer zones.

    SPONSORED CONTENT

    Fumigants are a cornerstone of conventional agriculture in the United States for combating soil-borne pests and diseases. However, fumigants also have significant limitations, including application requirements, buffer zone restrictions and the lack of available products for organic farmers.

    The role of fumigants in agriculture

    Fumigants are chemical agents applied before planting to eliminate pests, pathogens, and weeds, which protect crops and improve vigor and yields, especially in high-value crops like strawberries and tomatoes. Despite their effectiveness, most carry significant health and environmental risks, leading to strict regulations on their use, application timing, permitting, and buffer zones1,2. In some cases, these health concerns have led to complete bans on specific products, such as methyl bromide, which has been restricted in both the United States and Europe2,3.

    Buffer zone restrictions

    To reduce exposure risks, the Environmental Protection Agency (EPA) enforces strict buffer zones, areas where fumigant application is prohibited, near public spaces like schools and hospitals. Zone size depends on the fumigant used, application method, local environmental conditions, and distance to public spaces. While crucial for public safety and conservation efforts, buffer zones decrease usable farmland. Often, untreated buffer zones can lead to uneven pest control and reduced crop yields4. Buffer zones also add regulatory burdens, including signage and detailed management plans, increasing cost and complexity2.

    Additional limitations of fumigants

    Beyond buffer zone requirements, fumigants come with additional key limitations:

    • Cost: Fumigation is expensive, requiring investments in chemicals, labor, and regulatory compliance, which are often unaffordable for small-scale farmers.
    • Equipment: The application requires specialized equipment, including shank injectors, calibrated applicators, tarping systems, and enhanced personal protective equipment, which further increases total expenses.
    • Application Conditions: Efficacy depends on precise environmental conditions (soil temperature, soil moisture, weather) and properly calibrated equipment to ensure efficacy
    • Environmental Risks: Fumigants are highly volatile and can drift off-site, endangering nearby communities and ecosystems. Improper application may lead to water contamination or harm to non-target organisms.

    Organic alternatives to fumigants

    For organic farmers, the limitations of fumigants are even more pronounced, as organic certification prohibits the use of most synthetic fumigants. In response to these challenges, organic farmers rely on natural alternatives to manage soil-borne pests and diseases5:

    • Soil Solarization: Fallow fields are covered with plastic during peak heat for 4-8 weeks to trap solar energy, which can kill pathogens, pests, and weed seeds. This timeline may be challenging as the temperatures required for effective treatment coincide with peak growing seasons.
    • Anaerobic Soil Disinfestation (ASD)6: Organic materials like rice bran or mustard seed meal are incorporated into the soil and the soil is then saturated with water and covered with plastic to create anaerobic conditions. As oxygen is depleted, aerobic pests die and anaerobic species flourish, producing byproducts that further suppress pathogens. Once the field is cleared and prepared for planting, the reintroduction of oxygen into the soil then reduces anaerobic microbial populations, resulting in a cleaner overall soil. This process, however, can be quite expensive as it is water- and input-intensive and can be ineffective if fields are drained too early.
    • Crop Rotation and Cover Cropping: These practices disrupt pest life cycles and improve soil health; however, they are inadequate to knock down heavy infestations without additional inputs.
    • Biological Controls: Beneficial species help suppress pests via predation or competition. Their success depends on careful species selection, application timing, and environmental fit, and they work best when paired with other methods of control.

    Introducing RevoCURB™, a safe-to-use, 3-in-1 solution for organic and conventional growers.

    RevoCURB™ is a new OMRI-listed, 3-in-1 soil treatment designed to enhance crop health and yield by targeting plant parasitic nematodes, microbes, and pre-emergent weed seeds. Exempt under FIFRA 25(b), RevoCURB offers a 0-hour restricted entry interval (REI), no restrictions on maximum residue levels, minimal requirements for personal protective equipment, and no need for buffer zones. RevoCURB utilizes the power of Smart Blend Technology and four essential oils – thyme, clove, garlic, and cinnamon to provide control through multiple complementary modes of action. These oils disrupt cellular membranes on contact, inhibit nematode egg hatching, impact the nervous systems of juvenile nematodes present in the soil, causing paralysis and death, vaporize within the soil column, repelling pests and delaying repopulation and suppress weed seed germination.

    “These contact and repellency modes of action work in tandem upon application of RevoCURB to disrupt pest lifecycles and prepare soils for planting.” – Emma Trainer, Scientist at Kemin Crop Technologies.

    RevoCURB should be applied 14 days prior to planting or post-harvest and watered in per label directions to maximize efficacy and the zone of protection without harming crop seeds, seedlings, and plugs.

    Field trial to assess the effectiveness of RevoCURB on root-knot and stunt nematode populations on cucumber. San Luis Obispo, California (Credit: Bradley Booker at Pacific Ag Research) (SD-25-28093)

    RevoCURB protects young crops from multiple soil pest pressures, allowing for healthier plants and greater yields. Because it’s free from buffer zone requirements, REI, and residue restrictions, RevoCURB is ideal for transitional areas and organic acreages – bringing flexibility and safety where conventional fumigants fall short.

    For more information about RevoCURB, visit www.kemin.com/revocurb or contact us croptech@kemin.com

    References

    1. Panth, M. & Hassler, S. and F. Baysal Gurel (2020). Methods for Management of Soil-borne Diseases in Crop Production. Agriculture,
    2. United States Environmental Protection Agency. Soil Fumigant Toolbox. https://www.epa.gov/soil-fumigants
    3. European Commission. European Community Management Strategy for the phase-our of the critical uses of methyl bromide. April 2009. https://ozone.unep.org/sites/default/files/additional-reported-information/MeBr_Submissions/EC%20Management%20Strategy%20for%20Methyl%20Bromide.pdf
    4. Vansickle, J.J.; Smith, S.; and R. Weldon (2009). Impacts of EPA proposed buffer-zone restrictions on profitability of Florida strawberry growers. University of Florida Institute of Food and Agricultural Sciences; FE795.
    5. Bolda, M.P.; Dara, D.K.; Daugovish, O.; Koike, S.T.; Ploeg A.T.; Brown, G.T.; Fennimore, S.A.; Gordon, T.R.; Joseph, S.V.; Westerdahl, B.B.; and F.G. Zalom. Non-fumigant alternatives for soil disinfection. UC IPM Pest Management Guidelines: Strawberry. UC ANR Publication 3468. University of California Agriculture and Natural Resources, Davis, CA. https://ipm.ucanr.edu/agriculture/strawberry/non-fumigant-alternatives-for-soil-disinfestation/#gsc.tab=0
    6. Lopes, E.A.; Canedo, E.J.; Gomes, V.A.; Vieira, B.S.; Parreira, D.F.; and W.S. Neves (2022). Anaerobic soil disinfection for the management of soil-borne pathogens: a review. Applied Soil Ecology, 174.

    © Kemin Industries, Inc. and its group of companies 2025. All rights reserved. ® ™ Trademarks of Kemin Industries, Inc., USA. Always read and follow label directions. FIFRA 25(b) Exempt: RevoCURB has not been registered by the United States Environmental Protection Agency. Kemin Industries, Inc. represents that this product qualifies for exemption from registration under the Federal Insecticide, Fungicide, and Rodenticide Act. The products are not registered or authorized for sale in all states. Consult with your Kemin representative or state regulatory representative for approval of this use in your state, specific applications, and labeling. croptech@kemin.com | 800-752-2864 (ext.2).

  • California Orchards Blossom with NRCS Help Managing Pests

    California’s Central Valley is a land of agricultural abundance, known for its incredible diversity of crops including fruits, vegetables and nuts. It produces approximately 25% of the nation’s food.

    But with plenty can come pests – in as many varieties and types as the crops grown in the region. Area farmers have worked with USDA’s Natural Resources Conservation Service (NRCS) to implement integrated pest management into their orchard operations with marked results.

    Sandra and Mike Smith of Smith Family Farm in Fresno, California, showed NRCS Chief Aubrey Bettencourt the benefits of the practices that they have incorporated with NRCS assistance as they toured their 36-acre almond orchard.

    Established in 1903, the farm is on the cusp of welcoming its fifth generation of farmers. By adapting their operations to increase conservation and sustainability practices, the Smiths hope to pass on a rich legacy to their young granddaughters.

    The Smiths highlighted the impact that integrated pest management practices – notably hormone disruptors – have had in their fight to combat navel orangeworms in their almond orchards.

    “We were at 17.1% loss of our almond crop two years ago because of the infestation of navel orangeworms,” Mike Smith told Chief Bettencourt. “Once we implemented the mating disrupters, we were able to bring our almond reject numbers down to 1.1%.”

    Navel orangeworms burrow into almond nuts to feed on the kernel, damaging the nut and impacting producers’ overall yield and harvest quality. Deploying pheromone-based mating disruption tools can reduce navel orangeworm populations by hindering male moths’ ability to locate females.

    The Smiths have also leaned on NRCS technical assistance to implement other conservation techniques to increase the health of their orchard. The family now prioritizes composting and increasing organic matter, guided by the knowledge gained through NRCS collaboration.

    Further north, Chinchiolo Farming Co., Inc., a family-run business located in Lodi, California, is managing orchards of a different kind while embracing similar production practices.

    Producer James Patrick Chinchiolo has worked to uphold a century-old farming legacy, started by great grandfather Italian immigrant James Joseph Chinchiolo. Chinchiolo has worked with NRCS to incorporate a number of conservation practices including cover crops, tractor replacements, orchard removal and soil incorporation.

    Like the Smiths, Chinchiolo has dealt with pest issues, incorporating a Biologically Integrated Orchard Systems (BIOS) approach in managing his orchards. The BIOS system aligns with NRCS principles, embracing the implementation of conservation practices like cover cropping, beneficial insect habitat, and compost application to keep pests at bay.

    “We aim to foster a more ecologically balanced environment within our orchards,” Chinchiolo said during his discussion with Chief Bettencourt. “We are focusing on minimizing our inputs and creating more habitat for beneficial insects to flourish to help control unwanted pests.”

    Conservation practices like cover cropping and compost application not only help pollinators flourish – a crucial part of growing beautiful cherries – they also protect the trees’ overall health, improving soil structure and water retention.

    After last summer’s heat impacted this year’s cherry crop, Chinchiolo is working to take additional measures to make his trees more heat resistant in preparation for next season.

    “Growing cherries is never predictable. But it’s always beautiful.” Chinchiolo said.

    Helping People Help the Land

    During her visit, Chief Bettencourt emphasized that the agency’s primary focus is to give producers the tools that they need to be the best producers that they can be – increasing their yield while stewarding the nation’s natural resources.

    “Producers are the solution, and we want to empower them by getting our highly skilled staff out in the field to provide technical support. We want to streamline our programs to work better and faster for producers,” she said.

    NRCS helps farmers, ranchers and forest landowners make critical investments in their operations and local communities by helping them implement proven practices to ensure all of America’s farms, ranches and private lands are economically viable and thriving.

    If you are interested learning how these programs can help you achieve your operational and land management goals, find your local USDA Service Center and get started today.

    Follow the Chief through our blog series as she meets with producers across the country to learn how NRCS has helped their operations. — By Debra Denhart, Public Affairs Specialist, USDA