Tag: UC Agriculture and Natural Resources

  • Dragon Fruit Production and Farm Tour Coming to Southern California

    UC Ag and Natural Resources is hosting a Dragon Fruit Production Workshop and Farm Tour for growers in the San Diego area. The two-day event will discuss topics ranging from variety selection and field establishment to irrigation, pest management and marketing. Growers will have an opportunity to see the latest research and witness hands-on demonstrations, gain insights from local grower experiences and find out how to gain access to industry resources for this increasingly popular fruit.

    The workshop will be held Sept. 18 from 8 a.m. to 5 p.m. at the San Diego Farm Bureau in Escondido, and the farm tour will be held Sept. 19 from 8 a.m. to 4 p.m. Farm stops and itinerary are yet to be decided. Registration comes with a $60 charge and must be completed by Sept. 11.

    WORKSHOP TOPICS

    Dragon Fruit Varieties, Establishment and Economic Considerations for Commercial Production

    The Dragon Fruit Value Chain and Market Dynamics, from Producer to Consumer

    Dragon Fruit Diseases and Cactus Virus X (CVX) Incidence and Management Strategies in Florida

    Issues and Challenges with Dragon Fruit Production in Southern California – Facilitated Discussion with Local Growers

    Dragon Fruit Sensory Evaluation and Post-Harvest Management

    Dragon Fruit Value-Added Product Development

    Weed Management Strategies for Dragon Fruit Production

    Irrigation System Design Considerations and Water Management

    Insect Pests and Management Strategies for Dragon Fruit Production

    Agritourism as a Marketing Tool for Dragon Fruit

    Lightning Presentations About UCANR & Other Support Programs

    Food Safety Technical Assistance Program

    California Agricultural Land Equity

    California Under Served Population (CUSP) Program

    Transitioning to Organic Agriculture

    Climate Smart Agriculture Program

    Mission Resource Conservation District (RCD) Programs

    FIELD DAY ACTIVITIES- (Tour stops to be determined)

    Host farm overview and Tours

    Pruning, Pollination and Trellis System demonstration

    Irrigation Systems Design and Components

    Insect and/or Weed Pest Identification Clinic

    Backpack Sprayer Calibration Clinic

    Value-added Product Development demonstration

    Pitahaya and Value-added product tasting

    Story contributed by UC Ag and Natural Resources

  • 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.

  • UC ANR Hosting Irrigation Meeting

    UC Ag and Natural Resources is hosting its 2026 Irrigation and Nutrient Management Meeting for vegetable and berry crop growers. The session will offer cover such topics as basin conditions and groundwater management, stress factors affecting rot development in strawberries, irrigation management tools, impact assessments on nitrogen fertilizer and more.

    The meeting will be held Aug. 19 from 8:20 a.m. to to noon at the United Water Conservation District in Oxnard. Those interested can register here. Click here to view the full agenda. — Story contributed by UC Ag and Natural Resources

  • Effects of Shading on Raspberry Leaves

    There are a lot of reasons that plant leaves turn yellow and this can be beyond just the most obvious like nutrient deficiency or sickness, and sometimes includes things that we don’t think about at the beginning.

    In this vein, consider the pictures below of the yellowing caused in raspberry leaves when they are blocked from a sufficient amount of light. In this case, two leaves were covering another leaf below, and the result, which is visible when those two leaves are pulled aside, was a pattern of yellowing in the same shape as the leaves which were lying upon it.    The lack of sunlight causes the chloroplasts which are responsible for the manufacture of green chlorophyll to become less active, eventually degrade with the net result of degreening and a fade to yellow.

    Understanding this concept explains as well why the insides of raspberry hedgerowsare often filled with yellow and dying plants. There is little light getting through there, so the leaves lose their purpose and over time senesce. —Story by Mark P. Bolda, UC Ag and Natural Resource

    Pull the green leaves aside and we discover that the leaf below is left yellow in the area covered. Photo contributed by UC Ag and Natural Resources.
    On a macro-scale, this is why we often see the leaves on the inside of the raspberry hedgerow become yellow and die. They do not have sufficient light. Photo contributed by UC Ag and Natural Resources.
  • ‘Farm to Corrections’ Program Benefits California Growers, Incarcerated People

    Emotion showed on the face of a farmer as she walked across the rec yard of California State Prison Solano.

    As Sarah Weil talked with incarcerated residents of the facility in Vacaville, many of them shook her hand and thanked her for the mandarins she had supplied to the California Department of Corrections and Rehabilitation (CDCR).

    “Those are fire,” said Andre Pierson, chair of the Inmate Advisory Council, which liaises between residents and prison administration.

    “The only issue I have with the mandarins is we don’t get five of them,” said Patrick Range, another resident of the Solano facility.

    Weil, the co-owner of Twin Tree Farms in Madera, said she mainly sells her mandarins to wholesalers and thus rarely gets to hear such heartfelt appreciation from the people who are actually eating her fruit.

    “I literally cried at some point because I was so moved by how meaningful a mandarin can be,” Weil said. “For the people there, it’s a lifeline, and I was able to be a part of providing them that lifeline. That gave me a tremendous sense of satisfaction and purpose in what I’m doing in being a farmer.”

    Weil’s 47-acre mandarin farm is currently one of about 30 small- and medium-sized farms across the state participating in Harvest of the Month, a “farm to corrections” program bringing California-grown produce to CDCR facilities. Since its pilot phase in 2023, the program has expanded to supply fresh fruit and vegetables to all 30 adult facilities that house a total of about 90,000 people.

    The result of a cross-sector partnership initiated by University of California Agriculture and Natural Resources’ Nutrition Policy Institute, Harvest of the Month is the only program of its kind in a U.S. correctional system. NPI brought aboard the nonprofit Impact Justice and  ChangeLab Solutions, and together they developed a partnership with CDCR and Spork Food Hub to launch this project.

    In late April, the current partners hosted stakeholders — including farmers like Weil — at a panel discussion about the program at Spork in Davis and a tour of the Solano facility. Weil was grateful for the chance to meet with the incarcerated residents and understand the full impact of her mandarins.

    “Harvest of the Month means everything to me,” said Range, citing the health benefits of fresh produce.

    Weil recalled residents telling her that the citrus didn’t just nourish their bodies – it nourished their souls. “It brought them a sense of connection to the outside; it brought them a sense of connection to nature, a connection to something that’s living,” Weil explained.

    For that firsthand experience and her involvement with Harvest of the Month, Weil also expressed her thanks to the partners behind the program, led by the NPI team of principal investigator Wendi Gosliner, project director Ron Strochlic and project manager Kassandra Bacon.

    “I feel very, very blessed to be a part of it,” Weil said.

    NPI, Impact Justice grew partnership that led to CDCR efforts

    In 2019, Impact Justice invited Gosliner to a stakeholder interview to talk about food and nutrition and how they affect incarcerated people. Subsequently, Gosliner and Strochlic saw an opportunity to increase access to California-grown fruits and vegetables in carceral settings through a California Department of Food and Agriculture Specialty Crop Block Grant funding opportunity. Gosliner invited Impact Justice and ChangeLab Solutions to partner on the proposal.

    Awarded an initial grant in 2020, the team spent a couple years gathering input from experts and stakeholders across the country, including formerly incarcerated individuals. The project managers also gradually cultivated a working relationship with CDCR – the State of California’s largest single purchaser of food.

    Departmental managers initially resisted the idea due to financial considerations, as a single serving of California-grown produce from a small or medium grower costs about 35 cents, compared to their typical cost of 12 to 15 cents per serving sourced from large distributors or places like Mexico.

    But CDCR, like all California state entities, was facing a requirement to purchase — by the end of 2025 — at least 60% of their food from California growers and producers, as mandated by AB 778.

    “In order to do this, food services began to collaborate with other departments and agencies,” said CDCR food administrator Lance Eshelman.

    The partners eventually settled on an approach based on the existing Harvest of the Month model, used in K through 12 settings to encourage young people to eat a variety of foods and receive nutrition education – while supporting small and medium farmers at the same time. The team sought to deliver one select produce item each month, starting with three correctional facilities in July 2023.

    “We thought of a bite-size, small-step way to get our foot in the door with this, and that’s where Harvest of the Month began,” said Heile Gantan-Keo, program manager of Impact Justice’s Food in Prison Project.

    But piloting the program at the outset, even at a modest scale, presented challenges.

    “There were just a lot of logistics to manage in terms of getting the right product, having it delivered at the highest quality, and then getting it utilized well by the facilities,” Gosliner said. “There were learning curves all across that entire chain of experience.”

    Fortunately, they were able to lean on the expertise of Spork Food Hub.

    Harvest of the Month Offers Stability, New Market for California Farmers

    When the COVID pandemic disrupted food supply chains, a handful of Sacramento Valley growers formed Spork to pool their crops and sell them to local school districts, according to Hope Sippola, co-owner of the food hub.

    The project team brought in Spork because of its ability to fill a substantial order from a large purchaser like CDCR by pulling together organically or sustainably grown products from a variety of operations. Spork works with 120 farms ranging in size from two to several hundred acres, with about 60% of them operated by people who identify as Black, Indigenous or people of color.

    Sippola – who is also co-owner of Fiery Ginger Farm in Yolo County – said her small farm has supplied bok choy and pluots to Harvest of the Month.

    “For a tiny farm like ours, it’s really important,” she said. “We wouldn’t be able to access this market if it weren’t for the fact that a food hub could aggregate the different quantities from the different farms.”

    Working together also distributes risks among farmers and mitigates any potential shortfall of a particular crop, said Tim Mueller, chief executive officer of Riverdog Farm, a mixed fruit, nut, vegetable and livestock operation on 350 acres in the Capay Valley. His farm has supplied purple and watermelon daikon radishes, broccoli and cabbage to the program.

    Harvest of the Month can absorb unexpected overruns, Mueller noted, and having a reliable customer in Spork gives his operation stability. That means he is able to give his 40 employees steady work, which strengthens the economy and social fabric of the entire community.

    “These are people who aren’t chasing harvests across California, up and down the West Coast – they’re here; this is their home,” Mueller explained. “They have year-round work, and a program like Harvest of the Month helps make that a reality.”

    Weil, who grows mandarins exclusively and also operates her own packing house, said the consistency and volume of Harvest of the Month orders enable her to stay in production and retain her picking and packing crews – a challenge for many growers.

    “We’re talking about 50 people – from the pickers to the packers and other people that are involved,” Weil said. “A lot of people benefited from this program; it’s really been a godsend and I’m so grateful for it.”

    Thus, despite the slightly lower price point offered through the Harvest of the Month program, participating farmers nevertheless appreciate access to a significant new market and the guaranteed sales — as well as other opportunities.

    “For example, Orozco Farms — also known as Melon Bros — they didn’t grow in the winter and grew only summer crops,” Sippola said. “But now they’re growing in the winter for this program specifically, and we’ve been crop planning with them.”

    Growth of Program Presents Delivery, Kitchen Challenges

    Given the many benefits for growers and incarcerated individuals alike, Harvest of the Month grew steadily, with the program partners adding three CDCR facilities each quarter. Through an additional $5 million allocation from the California legislature to help CDCR comply with AB 778, all 30 adult facilities in the system now get multiple servings of fresh fruit and vegetables every month.

    This presented a major test for Spork’s logistical reach.

    “We’re driving all the way to the Oregon border and all the way to the southern border of California, which is a lot for our five little trucks,” said Sippola, who added that Spork is also partnering with a third-party company to help deliver the produce to all CDCR facilities.

    Although it started as a regional food hub, Spork now sources from farms all over California.

    “We have a lot of coastal farmers, which gives us season extension and they can grow things like berries year-round,” Sippola said. “We source from most of California, with a focus on the Central Valley and Central California coast, as far south as Santa Maria.”

    Another challenge has been ensuring that the fruits and vegetables can be properly processed by the diverse facilities across the CDCR system.

    “When we’re dealing with 30 different kitchens – some as old as San Quentin, some as new as the Stockton medical facility – we have different equipment,” Eshelman explained. “They all don’t have the same infrastructure or equipment, and some cooks get creative in order to produce a quality product.”

    Butternut squash was, quite literally, a tough case in point. Gantan-Keo of Impact Justice said she heard many questions from food service staff – what to make with this, how does this fit into the statewide menus they need to comply with, and how do they even cut up the hard squash, without industrial choppers, processors, or the sharp knives that one might find at home.

    “We learned from that; we listened and surveyed food managers who have been implementing the program,” Gantan-Keo said. “And then we tried to go for a softer variety of squash, like delicata squash.”

    The program team also has been gathering feedback from the residents of the facilities.

    “When Heile and the team are going to the facilities, they’re not just talking to food service staff or the food managers. They’re also talking to the incarcerated individuals – they’re the ones that are consuming these products,” Eshelman said. “They also know how to prepare ingredients in their cell, from the food they purchase from the canteen [a commissary in a correctional facility].”

    With State Support, Harvest of the Month Will Continue to Improve

    Pierson and Range, incarcerated residents at the Solano facility, have been using the fresh vegetables in the soups they make. Pierson said he is teaching the younger men how to prepare the soup, and Range added that he appreciates being able to add different vegetables to his rice bowls, such as the bok choy.

    “In the ’90s, when I got here, you got a handful of lettuce,” recalled Range, who has to manage kidney disease.

    He said that in 2023, he was told he would need dialysis by the end of the year, but after watching his diet and increasing his intake of fruit and vegetables, he noted that his kidney function had actually improved in the intervening years.

    “My kidneys are better and my health is better,” Range said.

    Other residents in the rec yard told attendees of the stakeholder tour that the fresh produce was a great boon for their mental and emotional health. By eating less processed food and more fruits and vegetables, some observed that they felt less sluggish or had fewer mood swings, and were less prone to destructive behavior.

    They especially enjoyed the greater variety on offer — from pluots to persimmons, and avocados to asparagus.

    “Every time I got these vegetables, I called my mom and asked her what to do with them,” said Brian Cortez.

    The produce will keep coming, at least for the foreseeable future. Harvest of the Month will continue, even as the grant money that supported program logistics and management runs out. A second specialty crop block grant that the NPI team received ends later this month.

    “The idea behind those grants is that the project should be self-sustaining and not continue to require grant funds,” said Gosliner, the NPI principal investigator. “We’ve been trying these past three years to figure out how to make Harvest of the Month embedded in systems, so it doesn’t require our effort for the work to continue.”

    The funding for purchasing the food from Spork has been entirely provided by CDCR, noted Strochlic, the NPI project director.

    “It’s all come from CDCR, which has demonstrated their commitment to the program and making sure that it’s successful,” he said. “They’ve been a great collaborator, as well as a great champion.”

    Eshelman, the departmental food administrator, credits CDCR leadership — Secretary Jeff Macomber and the federally appointed Receivers overseeing health care – for their support of the program.

    As long as the state’s budget permits, Eshelman said he will continue to grow and improve upon the template that has been established by Harvest of the Month.

    “We have plans, we have ideas, and now we know how to make it work,” he said. “And we’re looking forward to the future.”

    Story by UC Ag and Natural Resources

  • Registration Open for 2026 California Agritourism Summit

    The UC Ag and Natural Resources Agritourism is approaching and accepting registrations. From Sept. 23–25, San Luis Obispo County will become a hub for agritourism knowledge exchange.

    Through keynote speakers, panel discussions and breakout sessions, summit participants will gain practical tools to strengthen agritourism in California. By visiting local farms, attendees can learn directly from business owners.

    Find all the details on the event and register.

    Event organizer Rachael Callahan, UC SAREP statewide agritourism coordinator, is excited to introduce attendees to the area’s diverse operations.

    “We’re going to an urban farm. Then we’ll be out on a big, huge cattle ranch. And an indoor mushroom growing facility,” said Callahan. “San Luis Obispo just has a lot to offer in terms of scale and products.”

    The program is tailored for multiple audiences: current agritourism operators, policymakers, regulators and tourism and economic development professionals.

    Growers may take interest in breakout sessions on emergency preparedness or strategies for accessing capital. Tourism and economic development professionals can learn how to attract agritourism to their regions. The networking sessions hosted by event supporter California Grown will bring all stakeholders together while enjoying the state’s agricultural bounty.

    According to Callahan, the summit coincides with the agritourism industry receiving increased attention and validation. Last year, California lawmakers passed legislation that streamlines permitting for low-impact camping on private sites. The decision was met with cheer from the agritourism industry, especially growers interested in hosting campers.

    “Passing low-impact camping legislation was a big accomplishment,” said Callahan, who hopes the law will inspire conversations and new ideas to facilitate continued growth in the industry. “What can we learn? What other pathways can we open up?”

    Lynette Sonne, founder of FARMstead ED, a summit partner and agritourism nonprofit in San Luis Obispo, expressed gratitude about the summit coming to her county.

    “We look forward to wandering off the beaten path, with new friends and old, to discover urban farms, tucked-away family ranches and hand-crafted goods made right along the trail. These are places shaped by seasons, sweat and tradition,” Sonne said.

    For growers or other land managers interested in adding agritourism to their operations, visit the California Agritourism website to learn about getting started in the industry and sign up for the e-newsletter to find local workshops hosted by UC ANR.

    The 2026 California Agritourism Summit is organized by UC SAREP in collaboration with the 2026 planning committee, summit supporters and sponsors. Summit co-hosts include California Grown, FARMstead ED/SLO County Farm Trail, the Governor’s Office of Business and Economic Development (GO-Biz) and Siskiyou Economic Development. — Story contributed by UC Ag and Natural Resources

  • Fertilization and Irrigation Strategies Tutorial Planned for Strawberry Growers

    UC Ag and Natural Resources is planning a Pre-Plant Fertilization and Establishment Irrigation Strategies for Strawberry Production

    Growers will gather May 21 at Crisalida Berry Farms in Oxnard to go over insights on establishing strawberries with drip tape versus micro sprinklers, irrigation choices and their influence on crop development, practical approaching to improving water and nutrient use efficiency, how to visualize treatments effects on plots and discuss events. Fertilizer strategies like banded, broadcast and no fertilizer will also be discussed.

    Spanish translation will be provided, along with refreshments. Participants including certified crop adivsers will receive two continuing education units.

  • UC ANR: April Showers Bring Ruined Berries

    The Salinas Watsonville growing region was beset by significant amounts of rain recently, so it was time to go out and have a look. According to UC Ag and Natural Resources, the fruit is being thrown away instead of being put into clamshells and boxes for shipping.

    Much of the damage in the pictures below has to do with “water soaking”, meaning the riper fruit has pulled water into itself via osmotic pressure and the extra water coming in so quick has subsequently burst the epidermis.  A general rule of thumb is that most varieties of strawberry can take up to 1/2 inch of water before they manifest “water soaking” damage, so the berries around here which were subjected to 1 1/2 inches of water didn’t stand a chance.

  • UC Seeks Consumers to Weigh in on New Method of Controlling Asian Citrus Psyllids

    To understand consumers’ attitudes toward a bioengineered pesticide for citrus crops, University of California Agriculture and Natural Resources researchers are asking for volunteers to participate in focus groups in Riverside, Oakland and Fresno.

    Bacillus thuringiensis, or Bt, is a naturally occurring bacterium being tested to control the spread of Asian citrus psyllid, the small insect that transmits the disease huanglongbing to citrus trees. Both the Asian citrus psyllid and huanglongbing have been found in Southern California backyard citrus trees and threaten to spread throughout the state.

    Huanglongbing, also known as citrus greening disease, is a bacterial infection that stunts citrus trees, reduces their fruit production, deforms and greens the fruit and eventually kills the tree. There is no known cure or effective control.

    The disease has already devastated Florida’s citrus industry, slashing the state’s orange production by 92% between 2005 and 2025, according to Karen Jetter, associate director and project economist at the UC ANR Policy Institute. By the time the magnitude of the problem was revealed, both Asian citrus psyllid, or ACP, and huanglongbing were widespread in Florida.

    “In California, we still have the opportunity to slow the spread of huanglongbing through ACP management,” Jetter said.  “This unique technology is designed to be part of a comprehensive ACP management program, not to replace it.”

    Jetter and Fiona Ogunkoya, survey researcher at the UC ANR Policy Institute, are conducting focus groups to assess consumer attitudes toward an engineered Bt pest control method that targets Asian citrus psyllids, the primary vector of the disease, to stop the spread of huanglongbing.

    The bioengineered pest control strategy, developed in Florida and shown to be effective, uses an engineered citrus tristeza virus to transmit an engineered Bacillus thuringiensis to citrus trees. The Asian citrus psyllid lays eggs on the tender new leaf growth of the trees. After the nymphs hatch, the immature insects consume the modified Bt-infected leaves, become sick and die.

    California citrus growers surveyed by Sandipa Gautam, UC Cooperative Extension integrated pest management citrus advisor, said they are interested in the approach. But they growers are concerned that consumers will not accept fruit grown with this new bioengineered insecticide.

    To find out what consumers think, the researchers will meet with three focus groups, with each session limited to six to eight people to allow all participants time to express their thoughts.

    The 90-minute focus group meetings will be held at UC Cooperative Extension offices in Riverside on March 30 at 6 p.m., in Oakland on April 6 at 2 p.m. and in Fresno on April 8 at 2 p.m. Pizza will be served.

    To participate in a focus group, register for a session at https://forms.gle/QPyUd7QazTLfNdATA. To be eligible, participants must be 18 years of age or older and able to attend the focus group in person. — By UC Agriculture and Natural Resources

  • Spider Mite Management Methods

    Spider mites can be a difficult pest for date growers, especially with how high up in the trees the fruit is. However, new methods of spider mite management are being studied at UC Riverside, including the use of predatory mites. Entomology specialist Bodil Cass spoke with Matthew Malcolm from Malcolm Media Ag Publishing at the World Ag Expo to discuss their findings. Watch this quick video and read more in California Fruit & Vegetable Magazine.

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