Category: Featured Post

  • This Week In Ag – September 2

    Five stories are making headlines across California agriculture this week, from a familiar Central Valley face appearing on pistachio packaging to a new tool aimed at protecting cattle from New World screwworm. Here’s what you need to know in this week’s edition of This Week in Ag.

    Josh Allen Featured on Wonderful Pistachios Packaging

    Firebaugh native and NFL MVP Josh Allen is bringing more attention to one of California’s biggest specialty crops.

    Allen is featured on new limited-edition Wonderful Pistachios packaging rolling out at select retailers. The Buffalo Bills quarterback has a personal connection to the industry as a fourth-generation pistachio farmer.

    This marks the second year of Allen’s partnership with Wonderful Pistachios and also brings back the Josh Allen Scholarship program. The program supports first-generation students from Firebaugh pursuing higher education, providing recipients with up to $12,000 over four years of college.

    Nearly 40 high school seniors were accepted into the scholarship program during its first year.

    Blueberry Industry Votes to Continue U.S. Highbush Blueberry Council

    The U.S. blueberry industry has voted in favor of continuing the work of the U.S. Highbush Blueberry Council.

    The USDA Agricultural Marketing Service announced that a majority of eligible blueberry producers and importers supported continuing the council.

    Created by the industry 26 years ago, USHBC works to increase consumer demand for blueberries, expand opportunities in global markets and provide resources to support the blueberry industry.

    FDA Authorizes Tool to Help Prevent New World Screwworm

    Cattle producers have another tool available as concerns surrounding New World screwworm continue.

    The U.S. Food and Drug Administration issued an Emergency Use Authorization for Bimectin, an ivermectin injection, to help prevent New World screwworm infestations in certain cattle.

    Under the authorization, the product can be administered within 24 hours of birth, at the time of castration or when a wound appears.

    Bimectin is not authorized for this use in lactating dairy cows or calves intended to be processed for veal.

    The FDA said available evidence indicates it is reasonable to believe the product may be effective when used as authorized and that its known and potential benefits outweigh its known and potential risks.

    UC ANR Connect Seeks New Technology for California Agriculture

    UC Agriculture and Natural Resources is looking for agricultural technology that could benefit California growers.

    Applications are open for UC ANR Connect, a grower-informed commercialization program operated by UC ANR Innovate in partnership with Farmhand Ventures.

    Selected companies will receive commercialization support, feedback directly from California growers and agricultural professionals, industry connections and an opportunity to demonstrate their technology during a field day.

    The current application cycle is focused on commercially available technology for permanent and specialty crops, including fresh fruit, table grapes, pistachios, desert vegetables, berries, citrus and avocados.

    Applications will be accepted through Sept. 18.

    Mike Forbes Named President and CEO of American Pistachio Growers

    American Pistachio Growers has announced new leadership.

    Mike Forbes officially takes over as the organization’s president and CEO on Sept. 1, bringing more than two decades of leadership experience across the food, consumer products and wellness industries.

    Forbes also has agricultural roots. A Wisconsin native, he grew up participating in 4-H and comes from a family of farmers. His career has included positions with McKinsey & Company, Jim Beam, Procter & Gamble and General Mills.

    As president and CEO, Forbes will lead American Pistachio Growers’ efforts to represent American pistachio growers and processors, strengthen domestic and international demand and promote the benefits of American-grown pistachios.

    Stay Up to Date with California Ag Network

    That’s this week’s look at five stories impacting agriculture.

    Follow California Ag Network for more news, industry updates and stories from across California agriculture.

  • USDA to Purchase $30M in California Walnuts

    The California Walnut Commission (CWC) voiced its support for the USDA’s intent to purchase $30 million of California walnuts through Section 32 authority.

    The announcement, made Aug. 24 by USDA, is part of Section 32 of the Agriculture Act of 1935, which authorizes USDA to purchase agricultural commodities for domestic nutritional assistance programs such as the National School Lunch Program and School Breakfast Program, and for food banks and soup kitchens.

    Combined with USDA’s $15 million walnut purchase announced earlier this year, the latest announcement brings total USDA Section 32 purchases of California walnuts in 2026 to $45 million.

    “We appreciate USDA and Sec. Brooke Rollins for their continued support of American agriculture and the California walnut industry,” said Robert Verloop, CEO of the California Walnut Commission. “This purchase provides a meaningful market opportunity for California walnuts, while helping ensure nutritious, American-grown food reaches people across the country.”

    The announcement comes as the California walnut industry enters a new harvest season following the second-largest crop in its history.

    “As our industry prepares to harvest the 2026 crop, reducing carry-in from the 2025 crop is an important step toward strengthening overall market conditions,” Verloop said. “This purchase provides an encouraging boost for the industry and supports a healthier market environment as growers and handlers begin the new selling season.”

    With this support from USDA, the CWC remains committed to advancing the industry’s long-term sustainability and providing nutritious food to American families in need.

    “This announcement reflects USDA’s commitment to our growers to assist them in dealing with the challenges associated with the record 2025 crop, global market disruptions and ongoing trade uncertainties that have suppressed export volumes and grower returns,” said Davin Norene, a third-generation walnut grower from Rio Oso, Calif. and CWC chairman of the Board. — Story contributed by the California Walnut Commission

  • This Week In Ag

    This Week in Ag: Five stories you need to know from across California agriculture.

    This week, we’re covering new funding to stop the spread of glassy-winged sharpshooter, a potential new tool for fighting navel orangeworm, free business training for producers, a USDA trade mission to Singapore, and a $2 million investment aimed at helping the tree nut industry overcome trade barriers.

    Stay informed on the issues and opportunities shaping California agriculture.

    For more news impacting the California ag industry, follow California Ag Network.

  • USDA Announces $2M to Nut Producers Overcome Trade Barriers

    The U.S. Department of Agriculture’s Foreign Agricultural Service (FAS) announced a $2 million project to support the development of cost-effective tools that help tree nut handlers control pests and maintain product quality while crops are in storage after harvest.

    Funded under the Assisting Specialty Crop Exports (ASCE) Initiative, this opportunity is part of a broader ASCE suite of investments for specialty crop producers, which include fruits, vegetables, pulses, potatoes and tree nuts. ASCE projects expand market access, advance science-based trade standards and help to keep specialty crop producers globally competitive as they face increasing barriers to trade overseas.

    Awards will be made in Fiscal Year 2027, pending the approval of a Fiscal Year 2027 spend plan.

    More information is available in the Notice of Funding Opportunity: “Assisting Specialty Crop Exports Initiative: Low Oxygen Storage and Packaging Systems for U.S. Tree Nuts with Phytosanitary Traceability” at Grants.gov: https://grants.gov/search-results-detail/363690.

    The deadline for applications is 11:59 p.m. Eastern Daylight Time (EDT) Oct. 26, 2026.

    More information on the ASCE Initiative is available at: https://www.fas.usda.gov/programs/assisting-specialty-crop-exports-asce-initiative. — Story contributed by the USDA Foreign Ag Service

  • USDA Accepting Applications for a Trade Mission to Singapore

    The USDA Foreign Agricultural Service (FAS) announced it is now accepting applications for its upcoming trade mission to Singapore, scheduled for Dec. 7 to 9.

    FAS Agribusiness Trade Missions directly connect American agribusinesses with overseas buyers, expanding market access and boosting exports for U.S. producers. Current and potential U.S. exporters interested in exploring trade opportunities in Singapore, Malaysia and Thailand must submit their application via the official online form by 11:59 p.m. EST, Sept. 8, 2026.

    “Expanding our footprint in Southeast Asia is critical as we work to diversify export opportunities and build new, resilient paths for getting safe, high-quality American agricultural products into more markets,” said Under Secretary for Trade and Foreign Agricultural Affairs Luke J. Lindberg. “Getting producers face-to-face with buyers cultivates long-term trade relationships in vibrant, rapidly developing markets—ensuring our producers have multiple avenues to meet global demand instead of relying on a single buyer.”

    In 2025, U.S. agricultural product exports to Singapore, Malaysia and Thailand reached more than $3 billion in total. This regional total includes $1.3 billion to Thailand and $1 billion to Malaysia. In Singapore, U.S. exports reached $769 million, with consumer-oriented products— such as tree nuts, dairy products, wine and processed foods—making up 65% of that value.

    In addition to brokering business-to-business meetings, FAS staff and regional experts will hold in-depth market briefings and host site visits and networking events to strengthen trade relationships throughout the mission.

    USDA anticipates significant growth opportunities in the region for several product categories, including:

    • Tree nuts
    • Food preparations, such as baking ingredients
    • Seafood
    • Beef
    • Wine and distilled spirits
    • Processed fruits and vegetables
    • Dairy, eggs and egg products
    • Pet food
    • Pulses, such as dry yellow and green split peas

    In 2025, USDA trade missions connected more than 250 U.S. companies with buyers in Hong Kong, Thailand, Peru, Guatemala, the Dominican Republic, Taiwan and Mexico, generating projected 12‑month sales of $125 million.

    Singapore will be USDA’s final Agribusiness Trade Mission for 2026—a year in which USDA sent delegations to Malaysia, Indonesia, Guatemala, El Salvador, the Philippines, Vietnam, Argentina, and Ecuador. USDA will announce 2027 missions soon.

    For information on these and other trade missions, visit https://www.fas.usda.gov/topics/trade-missions.

  • Free Business Skills Training Offered to Growers, Ranchers and Food Vendors

    UC Ag and Natural Resources and F3 are offering  free skills training courses to help California growers navigate the hurdles of planning, marketing, social media, capital access and buyer engagement.

    Small- to mid-size growers, ranchers, fishers, food producers and food business owners are invited to join the Business Launchpad, a free, cohort-based business development program designed to help them build stronger, more resilient businesses.

    Growing and preparing exceptional food is only part of what it takes to build a successful food business. Today’s producers are expected to be marketers, financial managers, regulatory experts and sales professionals – all while continuing to farm, ranch, fish or manufacture food products. While they excel at their craft, many people would benefit from developing the business skills needed to grow and sustain their operations.

    “We are recruiting up to 40 participants across the state to be part of a nine-week virtual cohort designed to improve the financial stability and operational resilience of small- to mid-sized agricultural enterprises in California,” said Tracy Celio, regional director of F3 Local Farm and Food Innovation and UC ANR’s Southwest Regional Food Business Center.

    Business Launchpad participants will receive practical instruction from experts on key business topics, including recordkeeping, business planning, access to capital, marketing, branding and food safety. In addition to weekly online sessions, participants will receive individualized technical assistance and have opportunities to connect with peers and buyers in person.

    The fall 2026 cohort will run from October through December 2026. Participants will attend one online session each week, with each session lasting approximately 2.5 hours. Weekly educational sessions and coaching are delivered virtually, while regional networking and resource fair events will be held in person in Northern California, Central California and Southern California.

    The course will cover:

    • Business planning
    • Financial literacy
    • Regulatory compliance
    • Marketing and branding

    Participation will be hybrid with:

    • Virtual courses
    • 1:1 coaching
    • Regional networking events for professional growth

    Applications will be accepted until Sept. 1, and applicants will be notified of acceptance by Sept. 10, 2026.

    Learn more and complete the application for Business Launchpad: Growing Resilient Roots For Food, Farm and Ranch Businesses at https://bit.ly/Foodbizlaunch.

  • New Investment Aims to Give Growers Another Tool for NOW

    California almond growers know the challenge navel orangeworm brings every season. The pest can reduce crop quality, increase production costs and raise concerns around aflatoxin and marketability. Now, new additional funding is helping continue an industry-backed research effort to advance another tool growers may one day be able to use as part of an integrated pest management program.

    The Foundation for Food & Agriculture Research, the Almond Board of California and Flyttr™ partnered on a nearly $5 million grant to advance development of a biological approach targeting navel orangeworm in almonds and pistachios. ABC is helping fund a portion of the project, reflecting the almond industry’s continued investment in research that supports long-term orchard productivity, crop quality and grower profitability.

    The project centers on Flyttr’s Friendly™ navel orangeworm technology. The concept is simple: release Friendly™ male moths into areas with pest pressure. When those males mate with wild females, no surviving offspring are produced. With continued releases over time, the goal is to reduce the pest population and lower damage pressure in orchards.

    For growers, the significance is not that this replaces today’s best practices. Sanitation, monitoring, mating disruption, timely harvest and well-timed treatments remain important parts of navel orangeworm management. Instead, this research is focused on developing a targeted biological tool that could complement existing programs and help reduce reliance on conventional insecticides over time.

    Navel orangeworm remains one of the costliest pests facing California tree nuts, with industry losses estimated at more than $800 million each year. Damage can affect yield, quality and food safety, which is why the pest continues to be a priority for research, industry collaboration and new technology development.

    Funding from FFAR and industry partners will support the continued work needed to move the technology closer to practical use, including large-scale production systems and field studies. That means the effort is still in development, but it represents an important step toward expanding the number of durable tools available to growers managing navel orangeworm pressure.

    ABC’s role in helping fund this work is part of a broader commitment to support practical, science-based solutions for almond growers. By investing alongside partners, the almond industry is helping advance research that could protect crop value, strengthen pest management options and support the long-term competitiveness of California almonds.

  • Start With the Conversation That Determines Your Orchard’s Future

    Planting an almond orchard has never been a simple decision. But in today’s margin-tight environment, the choice of rootstock and variety combination is more than an agronomic preference — it is a 20- to 25-year business decision that can shape profitability, harvest efficiency, marketability and long-term risk.

    That was the focus of a grower-facing discussion moderated by Almond Board of California’s Michael Roots, with perspectives from Dave Phippen of Travaille and Phippen, Duarte Nursery’s John Arellano and grower Brandon Ribiero, at the 2026 Almond Crack Out event.

    For growers, the main message was clear. Do not make a planting decision in isolation. A new orchard should begin with a practical, sometimes uncomfortable, conversation about water, soil, rootstock, variety, harvest timing, market demand and, most importantly, economics.

    “Know Your Breakeven Cost Per Pound”

    Ribiero put the economics plainly when he said growers should “know your breakeven cost per pound.”

    That calculation should sit at the center of every planting conversation. Ribiero described it as a simple equation of cost divided by yield. If a grower expects production costs of $3,500 per acre and assumes 2,500 pounds per acre, the breakeven is about $1.40 per pound. If debt, land costs or other obligations push total costs to $4,500 per acre at the same yield, that breakeven rises to $1.80 per pound.

    That difference matters. In a market where prices can move quickly and margins can narrow, the wrong yield assumption, or the wrong rootstock and variety combination for a site, can make an orchard difficult to carry through the low points of the price cycle.

    Ribiero also warned that growers cannot always “save their way to prosperity.” Trimming some costs may help at the margins, but yield is often what moves the breakeven number in a meaningful way. That makes variety performance, rootstock fit and realistic production expectations central to the decision.

    Start With Water, Soil and Site Limitations

    Before selecting a variety, Ribiero said growers should first understand “all things water” — supply, quality and rights. Without water, he noted, the rest of the planting plan loses its foundation.

    From there, the conversation moves to soil. The right rootstock depends on what the site needs most, including vigor, anchorage, salt tolerance, disease resistance, replant tolerance or other characteristics. Prior Almond Board coverage of rootstock selection has emphasized the same point. Growers should identify a site’s limitations first, then select a rootstock that helps address the biggest risks.

    That means soil tests, water quality information, local grower experience and advisor input should all be part of the planning process. Once trees are planted, growers can adjust irrigation and fertility programs, but they cannot easily redo rootstock selection, variety choice or pre-plant soil preparation.

    Bring the Right People Into the Conversation Early

    Roots framed the panel around a gap that often appears in orchard planning. Growers may talk with a nursery early, but the handler is sometimes brought in after planting decisions are already made, or never at all. The panelists encouraged growers to widen the conversation before committing to trees.

    That group should include the nursery, handler, pest control adviser, neighboring growers and other trusted advisors who understand the region. Arellano said a nursery representative should be prepared to answer questions across rootstock, variety, fit for the site and how the planting will work operationally. If he does not have an answer, he said, the next step is finding someone who does.

    Ribiero said he often asks similar questions of different people one-on-one, looking for patterns in the answers. Where the advice is consistent, growers gain confidence. Where there are outliers, that is where the next question should be asked.

    Marketability Should Not Be an Afterthought

    Phippen brought the handler perspective into sharp focus. A variety may look attractive on paper, and a nursery may be able to supply the trees, but the buying public ultimately determines how that almond is valued. Market classification, quality expectations, defects, customer preferences and regional demand all matter.

    For Phippen, that means the marketing team should be part of the decision-making process. They can help growers understand what is moving well, what may be oversupplied and what buyers are asking for. A grower may be able to produce a variety, but the better question is whether the market wants it, and at what price.

    That conversation is especially important because handlers may serve different customers and markets. Quality tolerance, product form, timing and buyer preference can vary. A variety that fits one handler’s program may not be the right fit for another.

    Do Not Overcomplicate the Orchard

    One of Ribiero’s lessons from experience was the value of simplicity. He described a planting with multiple varieties intended to hedge risk around bloom, pollination and market movement. In practice, that complexity created harvest inefficiency without delivering a better return.

    His takeaway for growers was direct. Do not overthink it. A planting plan that is efficient, repeatable and well-matched to the site may provide more long-term value than one built around too many assumptions. Simplicity can reduce operational headaches and make it easier to scale what works.

    Pre-Plant Work Is the Last Chance to Get Some Things Right

    The panel also emphasized the importance of pre-plant groundwork and amendments. Ribiero noted that once an orchard is planted, it is difficult to incorporate materials into the active root zone. If a site needs amendments such as lime, gypsum, sulfur or compost, pre-plant is often the best opportunity to get them where they need to be.

    That point ties directly back to economics. A grower may be tempted to trim development costs up front, but those savings can become expensive if poor preparation limits tree performance for the life of the orchard.

    A Grower’s Pre-Planting Checklist

    • Calculate your breakeven cost per pound using realistic cost and yield assumptions.
    • Confirm water supply, water quality and water rights before moving deeper into planning.
    • Match rootstock to soil conditions, site limitations and long-term orchard goals.
    • Ask your handler how the variety fits current and future market needs.
    • Talk with neighboring growers who have experience with similar soils, water and varieties.
    • Include your PCA, nursery representative, handler and trusted advisors early.
    • Review independent field data and regional trial information where available.
    • Keep the orchard design practical for harvest timing, equipment and labor efficiency.
    • Complete needed soil preparation and amendments before planting.

    The Bottom Line

    Choosing an almond rootstock and variety combination is not just a horticultural decision. It is a business plan, a risk-management strategy and a long-term commitment to a specific site. The most successful planting decisions begin before the nursery order is placed, with honest conversations about what the orchard must produce, what the market will reward and what the grower can afford.

    For growers considering a new planting, Ribiero’s advice is a practical place to start. Know your breakeven cost per pound. From there, every other decision — water, soil, rootstock, variety, marketability and orchard design — should help answer one question. Can this orchard make money through the full price cycle? — Story Contributed by the Almond Board of California

  • Pecans Shipped to China Must Pay Anti-Dumping Fees

    As of Aug. 11, 2026, importers of pecans from the United States and Mexico must pay provisional anti-dumping duties, in the form of deposits, following a preliminary ruling by the Ministry of Commerce (MOFCOM) announced on Aug. 10. Imports from the United States are subject to a deposit rate of 54.3% of the product value, pushing the total import duty rate for U.S. pecans to 86.3%. This report contains an unofficial translation of the MOFCOM announcement and a table detailing deposit rates for various companies from the two countries.

    General Information

    On Aug. 10, the Ministry of Commerce (MOFCOM) published on its website a preliminary ruling on the anti-dumping investigation of imported pecans from Mexico and the United States (MOFCOM Announcement No. 32 of 2026). The preliminary ruling determines that imports of pecans originating from Mexico and the United States are being dumped, that the domestic pecan industry has suffered substantial harm, and that there is a causal link between the dumping and the substantial harm. Therefore, MOFCOM has decided to implement provisional anti-dumping measures in the form of a security deposit. Effective Aug. 11, when importing pecans originating in Mexico and the United States, importers shall provide security deposits to Chinese Customs based on deposit rates for each company as determined by the preliminary ruling. The MOFCOM spokesman commented that since no U.S. companies participated in the investigation, the deposit rate for all U.S. companies is set at 54.3% based on “facts available,” in accordance with relevant Chinese laws and WTO rules.

    Meanwhile, all interested parties may submit written comments to MOFCOM within 10 days from the issuance date of this announcement (i.e., by Aug. 20). According to the original announcement about the anti-dumping investigation, the final ruling will be published before Sept. 25, with a possible extension of six months. On Sept. 25, 2025, MOFCOM initiated an anti-dumping investigation against pecans imported from Mexico and the United States (MOFCOM Announcement No.52 of 2025). MOFCOM stated that preliminary evidence indicated pecans from Mexico and the United States were exported to China at prices below normal value, causing price undercutting and suppression for like products within the domestic industry. Therefore, MOFCOM had decided to conduct investigations through methods such as questionnaires, samplings, hearings, and on-site verifications.

    The United States and Mexico are the two top pecan producers, followed by South Africa. The United States was the second largest pecan supplier to China in 2024 with an export volume of 18,800 metric tons (MT) (see Table 1). However, pecan exports from all origins to China dropped dramatically in 2025 because of subdued consumption amid an economic downturn.

    In addition to the most favored nation (MFN) tariff, U.S. pecans also face a retaliatory Section 232 tariff (15%), Section 301 tariff (30%, which can be excluded), and reciprocal tariff (10%). Including the anti-dumping duties, the total duty rate imposed on U.S. pecans is 86.3%. Refer to USDA GAIN report CH2025-0209 for the latest tariff updates. Click here to read more about the new policy and rates — Story contributed by the USDA Foreign Ag Service China Staff

  • Precision Timing Critical for Managing Hull Rot

    With this season’s hull rot treatment window now behind growers, recent research shared by UCCE advisors offers timely guidance for evaluating disease pressure this year and planning more precise management decisions next season. Hull rot remains one of the more frustrating and yield-limiting diseases in California almonds, particularly because its full impact is not always visible in the year it occurs. The research is helping clarify where growers should focus their efforts, especially as the disease complex evolves and growing conditions continue to favor new pathogens.

    Mohammad Yaghmour, orchard systems advisor in Kern County, has been closely tracking changes in the organisms responsible for hull rot. While the disease has long been associated with Rhizopus stolonifer and Monilinia species, the increasing presence of Aspergillus niger is shifting both how the disease develops and how it needs to be managed in the orchard.

    Hull rot follows a classic disease triangle, requiring a susceptible host, a pathogen, and the right environmental conditions. What makes this disease particularly challenging is that all three components are often present at hull split, when almonds are physiologically vulnerable and environmental conditions can favor fungal growth. Infection begins in the hull, but the most damaging effects appear later as the fungus moves into the fruiting wood. Leaves surrounding infected nuts dry rapidly, and the spurs that would produce next year’s crop are killed. In severe cases, entire shoots can be lost.

    This delayed impact is critical. Yield losses are not just tied to visible infection but to the loss of next year’s bearing wood. Research conducted across multiple orchards showed that yield reductions become meaningful once strike levels reach roughly one hundred per tree. At that point, the cumulative loss of spurs begins to reduce the productive capacity of the tree in the following season.

    One of the most important takeaways from this work is that not all hull rot is the same. Each pathogen behaves differently and requires different management timing. Monilinia, which also causes brown rot during bloom, infects earlier and must be managed weeks before hull split. In contrast, both Rhizopus and Aspergillusare primarily driven by inoculum originating in the soil, and infections occur at or shortly after hull split.

    The rise of Aspergillus niger is particularly important for growers in warmer production areas. This pathogen thrives under higher temperatures and has become increasingly common in Kern County before spreading more broadly across the Central Valley. Its symptoms differ subtly from those of Rhizopus. Instead of the gray, fuzzy growth commonly associated with Rhizopus, Aspergillus produces darker, flatter, jet-black spores. It can also lead to internal damage, including black streaking in wood due to toxin production, which contributes to spur and shoot death.

    Understanding when infection occurs has helped refine management recommendations. Research shows that almonds are most susceptible during early hull opening, particularly when the split is still narrow. That window—when the hull has just begun to open—is where infection severity is often highest for Aspergillus. This underscores why spray timing is so critical. Missing that narrow window can significantly reduce the effectiveness of control measures.

    Variety also plays a role. Nonpareil, Butte, and Sonora have shown higher susceptibility, while Monterey and Fritz tend to be less affected under similar conditions. In mixed plantings, this means growers should expect greater risk in Nonpareil blocks and manage accordingly, prioritizing inputs where the return on protection is highest.

    Cultural practices continue to play an essential role in reducing disease pressure. Excess nitrogen has been shown to increase susceptibility, likely by promoting lush growth that favors infection. Careful nitrogen management can reduce that risk. You can learn more about nitrogen management at Almonds.org/NutrientManagement. Similarly, irrigation practices influence disease development. Strategic deficit irrigation has been linked to reduced incidence of Rhizopus, while excessive soil moisture during hull split can increase disease pressure.

    Dust management is another overlooked but important factor. Because Aspergillus and Rhizopus originate in the soil, any activity that creates dust can move spores into the canopy. Equipment traffic during hull split can unintentionally increase inoculum pressure at the exact time tissues are most vulnerable. Reducing dust during this period can help limit infection.

    Fungicides remain a valuable tool, but they are not a standalone solution. Their effectiveness depends heavily on correct timing and proper pathogen identification. Materials in several FRAC groups have shown strong performance when applied at the early stages of hull split. However, applying them too early or too late significantly reduces their value. In most cases, hull split sprays for disease management can be aligned with navel orangeworm treatments, helping to streamline operations.

    For growers, the message is clear: while the opportunity for in-season treatment may have passed, hull rot management is less about any single treatment and more about matching the right tool to the right moment. By using this season’s observations to scout for disease pressure, identify the pathogen involved and plan ahead for precise spray timing, balanced nitrogen, careful irrigation and dust reduction, growers can better protect the fruiting wood that supports next year’s crop and build more resilient orchard systems over time. — Story contributed by the Almond Board of California