California Ag Network

Tag: UC Davis

  • Sun World International Celebrates 50 Years

    Sun World International, a global leader in fruit genetics and licensing, celebrated its 50th anniversary during its 2026 Symposium and Field Days, marking five decades of innovation that have helped shape the fresh produce industry. The company also honored Board Chairman, David Marguleas, for his 40 years of leadership and contributions to Sun World, establishing the David Marguleas Endowed Research Fund in support of UC Davis Viticulture & Enology and dedicating the David Marguleas Tasting Room at the Sun World Center for Innovation.

    Founded in 1976 by David’s father, Howard Marguleas, along with Carl Maggio and Domenick Bianco, Sun World began as a California produce marketing company, but over five decades, they have introduced the first commercialized seedless watermelon, seedless table grapes and lemons, and have become a global fruit genetics and licensing business with brands recognized in markets around the world.

    “Fifty years ago, Sun World was founded on a simple but ambitious idea: fruit can be better,” said David Marguleas. “That idea has guided the company through every stage of its evolution, from early product introductions to the genetics, brands and global connections that define Sun World today. This anniversary is a celebration of the people who built that foundation and the opportunity we have to carry it forward.”

    More than 450 growers, licensees, marketers, retailers, researchers and industry leaders gathered for the company’s Symposium and Field Days, where attendees explored the next generation of Sun World innovation and the future of fresh produce. The anniversary celebration also brought former breeders to the stage alongside Marguleas, recognizing the scientific talent, shared expertise and long-standing relationships that have shaped Sun World’s programs across generations.

    Marguleas joined Sun World in 1986 and held leadership roles across the company for four decades. He became president and CEO in 2019 and assumed the role of executive chair in January 2025. During his tenure, Sun World evolved from a diversified produce marketing company into a global fruit variety development and licensing business, expanding its presence in key growing regions and building a broader portfolio of proprietary fruit offerings.

    The David Marguleas Endowed Research Fund will provide support for UC Davis students, faculty and researchers whose work advances California’s grape industry, while fostering stronger connections among research, education, and the industry. The David Marguleas Tasting Room dedication recognizes his vision, leadership and lasting impact on Sun World’s culture of discovery, collaboration and innovation. This will be a dedicated space where Sun World teams and guests can evaluate fruit, exchange perspectives and continue developing new consumer experiences.

    “David’s deep industry knowledge and commitment to discovery have helped shape who we are today,” said Bernardo Calvo, president and chief executive officer at Sun World International. “He has helped set a standard for how Sun World approaches innovation: stay curious, bring the right people together and keep raising the bar for what fresh produce can deliver. The research fund and tasting room reflect that legacy while creating spaces and opportunities that will help inspire the next generation.”

    Marguleas influence extends beyond the company’s business evolution. He has championed the relationships that link breeding and research with growers, licensees, marketers and retailers, helping Sun World build programs around both commercial performance and the consumer experience.

    “Sun World’s story has been written by people willing to ask what can be improved and then work together to make it happen,” said Marguleas. “I am deeply honored by these recognitions, and grateful to the many colleagues, growers, researchers and industry leaders who have contributed to the company’s success over the past 50 years.”

    — Story contributed by Sun World International

  • Participants Wanted for Wine Industry Survey

    The wine market is changing as consumers reconsider what they drink, how they make purchasing decisions and the role wine plays in their lives. UC Davis is inviting those in the wine industry to participate in a survey examining industry perspectives on current and emerging wine-consumer behavior.

    This survey is part of a research collaboration involving by Drs. Arran Rumbaugh (USDA Ag Research Service), Ha Nguyen (UC Davis), and Carola Grebitus (Arizona State University).

    The survey focuses on factors that may influence wine consumption and purchasing. The goal is to identify unmet consumer-insight needs and use the findings to inform future consumer research, applied projects, and decision-support tools that address practical industry priorities.

    About the Survey:

    •The survey takes approximately 10–15 minutes to complete.

    •Participants must be at least 21 years old.

    •Participation is voluntary.

    •Responses are anonymous, handled confidentially and reported only in aggregate.

    •Aggregated findings will be shared with participants so they can see perspectives from across the industry.

    Industry professional experience can help ensure that future consumer-behavior research reflects industry realities rather than assumptions.

    Complete the survey

    — Story contributed by UC Davis

  • Study Finds California Wolves Feed Heavily on Cattle

    Two new studies examining gray wolves in California paint a complex picture of life on California’s ranching landscapes: wolves eat cattle more than anything else and the presence of the predators causes significant stress among livestock.

    In the first study, UC Davis researchers found wolves from the Lassen and Harvey packs in northeastern California were primarily eating cattle. They collected scat samples during the summer months of 2022 and 2023 and found 72% of wolf scat contained cattle DNA. The research was published in PLOS One.

    “Whether it’s through scavenging or whether it’s through depredation, it’s a huge component of the wolves’ diet,” said lead author Tina Saitone, a professor of Cooperative Extension in the UC Davis Agricultural and Resource Economics Department. “Their conservation success is because of livestock producers in the state.”

    Cattle appeared as the most frequently occurring food item during both summers of the study, present in 86% of samples in 2022 and 55% in 2023. While all 2022 samples were from the Lassen Pack, the 2023 samples included eight from the newly established Harvey Pack.

    Wolves are a state and federally recognized endangered species. The first confirmed wolf entered California in 2011, following a nearly 100-year absence. The California Department of Fish and Wildlife estimates the state is now home to nine wolf packs.

    Few Natural Prey

    Wolves in California live in landscapes shaped by people. They have fewer wild ungulate prey options than wolves in other parts of North America. Mule deer are their only significant wild food source, but populations have dropped sharply since the 1970s.

    Saitone said the scarcity of wild prey may be one reason wolves are eating cattle instead. Researchers found mule deer in just 45% of the scat samples, significantly less common than cattle.

    Keeping wolves away from cattle is difficult on many of these working landscapes.

    “Conservatively, we’re talking about a million acres in our study area and 10,000 cow-calf pairs,” said Saitone. “It’s not as simple as putting up an electric fence on a two-acre pasture or putting cattle in the barn at night.”

    Cattle are stressed

    Researchers also examined how living among wolves affects cattle. Their findings suggest the costs of wolf reintroduction extend well beyond animals lost to predation.

    A second study, published in Ecology and Evolution, measured cortisol levels in tail hair samples collected from beef cattle grazing rangelands in northeastern California — some herds sharing territory with wolf packs, others in areas without wolves. Cortisol, often called the stress hormone, accumulates in hair over time, making it a reliable indicator of chronic stress rather than a momentary response to fright.

    Cattle herds living among wolves had cortisol levels 58% higher than those in control herds — a significant physiological difference. This marks one of the first times hair cortisol analysis has been used to study how the reintroduction of predators reshapes livestock physiology in the field.

    “What this really confirms is that death or depredation is not the only impact here,” said Saitone. “Living among wolves for cattle is a chronically stressful experience, and that could ultimately have production-related impacts in both the short and the long term.”

    Could it Affect Reproduction?

    Saitone said the findings are just a starting point. Researchers next want to understand whether elevated stress levels translate into lower conception rates. It’s a concern long raised by ranchers that has not yet been established through direct biological evidence. When breeding cows fail to conceive, it can directly affect a rancher’s bottom line.

    “That’s their whole purpose,” said Saitone. “These are mother cows that are supposed to be generating calves as a marketable product.”

    Other authors of the PLOS One study include Kenneth W. Tate and Benjamin J. Sacks of UC Davis. Funding came from the Russell L. Rustici Rangeland and Cattle Research Endowment and California Cattle Council.

    Christina Nord was corresponding author of the Ecology and Evolution study. Other authors include Alexander Pritchard, Rosemary A. Blersch, Brenda McCowan, Jessica J. Vandeleest and Kenneth W. Tate. Funding came from Western Sustainable Agriculture Research and Education and the Russell L. Rustici Rangeland and Cattle Research Endowment. — Story by Amy Quinton, UC Davis

  • UC Davis Opens Resnick Center for Agricultural Innovation

    The University of California, Davis, celebrated the grand opening of the Resnick Center for Agricultural Innovation.

    Made possible by philanthropic support, including a lead transformative gift from Lynda and Stewart Resnick, through their foundation in 2022, the new center is housed within the UC Davis College of Agricultural and Environmental Sciences. The center builds on the university’s longstanding global leadership in agriculture with a focus on translating research into real-world impact.

    “This center represents the best of UC Davis, uniting our strengths in agriculture, engineering and environmental sciences to address challenges facing communities across California and around the world,” said Chancellor Gary S. May. “We are deeply grateful to Lynda and Stewart for their partnership and support, which expand research opportunities and drive solutions that will shape the future of agriculture.”

    Students, faculty, staff, donors and industry partners joined university leaders May 19 to celebrate the opening with a ribbon-cutting ceremony, open house and tours.

    “Lynda and I have always believed that growing more food with fewer resources is one of the most important things we can do,” said Stewart Resnick, chairman of The Wonderful Company. “UC Davis is the leading ag university in the country, and we all have a stake in giving them everything they need to continue leading on this important work. This center will train the next generation, drive practical solutions, and get this urgently needed progress to growers and communities around the world.”

    The Resnick Center reflects a broader commitment from the couple and their foundation, whose $50 million gift to UC Davis in 2022 included $40 million for the facility and $10 million to establish the Resnick Agricultural Innovation Research Fund, advancing research into sustainable uses for agricultural byproducts. Stewart Resnick also serves on the Chancellor’s Board of Advisors, underscoring the Resnicks’ longstanding commitment to the university and its mission.

    The 34,000-square-foot facility includes hands-on learning in an innovative and immersive environment that connects education to research and discovery. Experts across disciplines will work in labs equipped with robotics, sensors, data science and artificial intelligence — technologies transforming how agriculture is managed and scaled. Research efforts will focus on making agricultural systems more resilient, developing advanced technologies, maximizing sustainability through water and energy efficiencies, and expanding access to nutritious food.

    “The new Resnick Center strengthens our ability to integrate research, teaching and extension in ways that directly serve California and beyond,” said Ashley M. Stokes, dean of the College of Agricultural and Environmental Sciences. “It creates a dynamic environment where discovery, learning and community engagement come together — accelerating innovation, deepening partnerships with industry, and translating knowledge into real-world solutions. The design and flexibility of the space allow us to reimagine ideas and respond with agility to the evolving needs of our communities.”

    The center will incorporate specialized labs and equipment that bolster efforts to transform agricultural byproducts into useable materials. This work is supported by the annual competitive research grants funded by the Resnicks, through their foundation.

    Over the past three years, UC Davis researchers have explored how agricultural waste — including discarded hulls and shells from California’s iconic specialty crops like almonds, pistachios and pomegranates — can be repurposed as soil amendments, sustainable food products and low-cost industrial materials. The new facility will allow for widespread exploration of even more agricultural crops and potential uses.

    In addition to experiential learning opportunities, the facility houses The Wonderful Scholar Center, a student success hub that offers academic and career advising for more than 50 students who are attending UC Davis on a Wonderful Scholarship. With a commitment to supporting first-generation students, the Resnicks, their foundations and The Wonderful Company have awarded over 3,500 scholarships of up to $40,000, providing mentorship and tutoring support with dedicated coaches, and equipping students with the tools to succeed in college and beyond.

    “As a first-generation college student who grew up around agriculture, I came to UC Davis with a deep appreciation of what farming families are up against. The Wonderful Scholarship brought me here, and this center has shown me how research, innovation, and policy all have to work together to change the future of agriculture,” said Jose Gomez, Wonderful Scholar and second-year political science major. “What the Resnicks have built isn’t just a building. It’s a bridge across disciplines — driving research, innovation, and people forward. I intend to spend my life serving others and advancing solutions that strengthen our communities.”

    “Today marks the beginning of a new era,” Chancellor May said. “The discoveries made inside this building will extend into farms, fields, and communities around the globe, shaping a more resilient and sustainable future for agriculture.” — Story by Courtney Tompkins, UC Davis

  • Tomato Industry Taking Steps to Stop Spread of Parasitic Weed

    California’s processing tomato industry for the first time this past harvest season agreed to voluntary equipment cleaning and notification guidelines to prevent the spread of branched broomrape, a parasitic weed that attaches to roots and sucks out key nutrients.

    The weed’s tiny can be smaller than finely ground spices, survive dormant in soils for decades and be carried by wind, footwear and other methods. Its resurgence in 2017 in Yolo County threatens the productivity of an industry that brought in $1.6 billion in 2024.

    The University of California, Davis — in conjunction with industry — federal authorities and state regulators, is playing a key research role in the battle against broomrape by testing and developing in-field sanitation guidelines for tomato harvesters and other field equipment. Researchers across campus are also evaluating herbicide treatments, weeding methods, ways to detect the weed and disrupt its ability to affect crops.

    Harvesting with Conditions

    Under former state quarantine rules, any broomrape detection would require a field be destroyed before harvest. With the new guidelines, growers may harvest if they adhere to certain management practices, including equipment cleaning standards developed by the California Broomrape Board, formed in 2024 to advise the California Department of Food and Agriculture.

    “There’s 1,000 acres that are actually reported but we know from observation that it’s probably much greater than that,” said Cassandra Swett, a UC Davis plant pathologist who is leading efforts to sanitize field equipment. “There are two main goals: reduce the economic impacts of broomrape on growers in the affected region by allowing them to harvest, and on the other side, keep broomrape out of the regions that do not currently have it.”

    In 2025, nearly all growers and processors in the state signed on to compliance agreements regarding cleaning and notification, and this year the California Department of Food and Agriculture is expected to require them, said Zach Bagley, managing director of the California Tomato Research Institute, which has been working on broomrape control issues since 2018.

    “It’s overall seen as a positive in the industry,” Bagley said. “The driver for sanitation is not just the biology of this weed and the reality in the field, but it also has regulatory components.”

    Also, this year, all processing tomato canneries in the state have agreed to build on-site wash stations or set up cleaning protocols for the 2026 season to help stop the spread from harvest trailers.

    “We can never have a 100% guarantee that we’re not moving seed, but we can do our best to take it off in the fields where we know we have a problem, and that’s where the research comes in,” said Bagley, whose organization helps fund related UC Davis research.

    Effectiveness and Timing Key 

    Swett, fabricators with the Department of Biological and Agricultural Engineering, a Cooperative Extension farm advisor and others in the industry are working on prototypes of sanitizing equipment, evaluating spray nozzle size, water pressure, aim and other factors.

    Cleaning is no simple task, and it consists of removing debris with physical cleaning and sanitizing. The right combination of debris removal followed by a sanitizer can substantially reduce dispersal risk, Swett said.

    The goal is to reach under and around tractors and remove mud, soil, plant material or anything that can collect and carry broomrape seeds. Some versions of these prototype cleaning systems are in the field and others roll under the equipment.

    “These machines are running 24 hours a day,” Swett said. “Taking that downtime to clean the machine is really messing up harvest schedules.”

    At present, cleaning a tomato harvester can take hours, but industry is hoping it can get to less than an hour to meet labor, costs and logistics needs. “One of the drivers of this work has been, ‘How can we make it faster but still be acceptable at the end of the day?” Bagley said. Agricultural engineer Dan Frank and crop advisor Patricia Lazicki have developed and are testing prototypes of automated systems that can improve cleaning time and coverage, Swett said.

    A Better Picture

    Before the broomrape compliance agreements, it was difficult to determine how many of the 185,000 to 250,000 tomato production acres might be infected because reporting would mean losing a crop and the money invested on planting, irrigation and other efforts with no hope of insurance covering the loss.

    The agreements have changed that, said Brad Hanson, a professor of Cooperative Extension in plant sciences who is an ad hoc member of the Broomrape Control Board.

    “With the risk of crop quarantine off the table for growers under the compliance agreements, we can talk about the problem out in the open,” Hanson said. “The daylighting part of this has been really helpful because for the last five years, we’ve been really in the dark.”

    Now it’s about working toward a common solution, said Neil McRoberts, a UC Davis plant pathologist who researches ways to support plant health and regulations. He is also a non-voting member of the board and familiar with pests that have caused widespread damage to other crops. With broomrape, the attention is focused before the weed has spread widely across fields in California and potentially to other crops like carrots, potato and sunflower.

    “I’m hopeful because the issues are being faced very early on,” he said.  — By Emily C. Dooley, UC Davis

  • ASEV Renames Extension Distinction Award to Honor Dr. Anita Oberholster

    The American Society for Enology and Viticulture (ASEV) announces that the ASEV Extension Distinction Award has been officially renamed The Anita Oberholster Award for Extension Excellence in honor of Dr. Anita Oberholster, who passed away on January 11, 2025, after a long and courageous battle with cancer.

    Dr. Oberholster was a globally respected professor of cooperative extension in enology at the University of California, Davis, whose work bridged rigorous science with practical solutions for the wine and grape industry. Throughout her 14-year career at UC Davis, she was known for her scientific excellence, her deep commitment to education and mentorship, and her ability to translate complex research into accessible tools that growers and winemakers could immediately apply.

    “Renaming this award in Anita’s honor reflects the immense contributions she made to extension work and the profound impact she had on our industry,” said James Osborne, Oregon State University professor and ASEV board president. “Her dedication to serving growers and winemakers, mentoring the next generation of wine and grape scientists, and translating research into practical solutions will continue to inspire extension professionals for generations to come.”

    A Legacy of Service and Scientific Impact

    Dr. Oberholster’s distinguished career advanced understanding in critical areas of wine science and viticulture. Her contributions have had a lasting impact on the California wine industry and beyond, including:

    • Pioneering work on smoke taint: Dr. Oberholster led a large group of researchers developing methods to assess and mitigate the impact of wildfire smoke exposure on grapes and wines. This work became essential during the devastating wildfire seasons of 2017, 2018 and 2020, when fires closed in on key California growing regions.
    • Applied research on grapevine diseases: As the lead investigator on a USDA Specialty Crop Research Initiative grant, she worked to understand the impact of Grapevine Red Blotch Virus, helping growers diagnose and respond to a disease with significant economic impact on the California industry.
    • Exceptional communicator and educator: Dr. Oberholster excelled at making complex science accessible, delivering education through on-site workshops, webinars, videos and one-on-one outreach with producers across California and around the world. Her warm personality and gift for communication made her a sought-after speaker and trusted advisor.
    • Service to the global wine community: Dr. Oberholster served multiple terms on the ASEV Board of Directors and was a regular presenter at major conferences, including the Unified Wine & Grape Symposium. She was twice named by Wine Business Monthly as one of the Top 50 most influential people in the U.S. wine industry.

    In 2021, Dr. Oberholster was a recipient of the very award now renamed in her honor, the ASEV Extension Distinction Award, recognition of her outstanding extension contributions to viticulture and enology.

    “Anita was an ideal Cooperative Extension specialist,” said UC Davis Professor and former Chair of the Viticulture and Enology Department Dr. David Block. “She was so talented at explaining complex concepts in understandable and usable ways for stakeholders. Her personality put winemakers and vineyard managers at ease, drawing them into discussions that they might not have had with other academics.”

    A Legacy of Mentorship

    Perhaps Dr. Oberholster’s greatest passion was mentoring postdoctoral fellows, graduate students and undergraduate interns, guiding and inspiring them to discover their love of science while embracing them in an exciting and caring environment. Those she mentored have become leaders themselves in industry and academia on at least four continents around the world.

    About The Anita Oberholster Award for Extension Excellence

    The Anita Oberholster Award for Extension Excellence will continue to recognize exceptional extension professionals in enology and viticulture whose outreach, education and application of research drive meaningful industry advancement. Recipients are honored for translating scientific knowledge into practical tools and for elevating the reach and relevance of extension programming.

    The award is presented annually in June at the ASEV National Conference and includes a plaque and monetary award. Recipients are expected to present on their extension programs at the conference.

    About ASEV

    Founded in 1950, the American Society for Enology and Viticulture is dedicated to advancing the interests of professionals in grape and wine research, production and education worldwide. ASEV fosters communication and collaboration among researchers, educators and industry practitioners.

  • AI Tool to Help Farmers Measure Real-Time Crop Health from the Field

    Leaf Monitor, a new mobile tool backed by artificial intelligence and predictive modeling, could revolutionize how farmers monitor crops and make decisions by providing real-time nutrition and leaf trait information in the field.

    “Having this information is very valuable for the farmers,” said Alireza Pourreza, associate professor of Cooperative Extension and director of the Digital Agriculture Laboratory in the Department of Biological and Agricultural Engineering at the University of California, Davis. “In five seconds, they can have a sense of how much nutrition they have in a leaf.”

    Development of the AI model was funded by the U.S. Department of Agriculture’s National Institute of Food and Agriculture’s HiRes Vineyard Nutrition multistate project and its Animal and Plant Health Inspection Service, as well as the California Table Grape Commission.

    Maha Afifi, director of viticulture research at the California Table Grape Commission, said the tool could be a game changer for the table grape industry if it leads to faster decision-making about fertilizer use. The right amount typically leads to healthier vines that produce more grapes with optimal size, weight and color.

    “The evaluation of vine nutrient status is one of our top priorities,” Afifi said. “At the same time, exploring new technology tools like this project is a high priority for us because they will be important to the future of the table grape industry.”

    Field testing

    The Leaf Monitor tool uses a handheld spectrometer to measure leaf reflectance beyond the range of light visible to the human eye.

    Once a leaf is scanned, its spectral data is uploaded to a cloud-based machine learning system designed to predict leaf traits and nutrient content. This algorithm was developed and trained by the Digital Agriculture Laboratory over five years using a dataset of thousands of leaf samples collected from California’s specialty crops, primarily grapevines and almonds. The samples were chemically analyzed to determine nutrient levels and structural leaf traits, providing the data needed to build an accurate prediction model.

    “Nutrient deficiencies in plants often go unnoticed until late in the season, by which point the damage is already irreversible,” said graduate student Parastoo Farajpoor, who is running the project. “This is why early detection is essential. Spectrometry provides a rapid and reliable way to identify these deficiencies before visible symptoms appear.”

    After a recent demonstration, Bulleseye Farms Irrigation Manager Geoff Klein said the tool could help save money and improve yields. Bullseye grows walnuts, pistachios, tomatoes, corn, wheat, rice and sunflowers in Yolo and Solano counties.

    Tailored crop management

    Currently, farmers typically take leaf samples, dry them, grind them up and send the samples off to a lab for testing, which can take up to two weeks to return results. Bullseye samples leaf tissues about three times a year.

    “Right now, it doesn’t really make sense to go out and take tissues in every single corner just because it’s expensive,” Klein said. “It’d be really cool if I could just walk out there and test a couple of different places.”

    The Leaf Monitor tool helps farmers tailor management decisions to specific areas rather than an entire field. Calibrating fertilizer use to real-time data can prevent overuse and nitrogen runoff, a financial and environmental challenge that many growers face.

    “I feel like there’s a lot of times we do need to put less [fertilizer] on, where we end up putting more, because that’s what the nitrogen removal formula says,” Klein said. “But with this app we can use less because we know the actual conditions at the time. I think it opens a lot of doors in terms of getting data back in real time and also utilizing the level of control we have with the data.”

    The app can also aggregate the scans and map out spatial patterns over a large area.

    “What we know is every field has variability that is not necessarily visible to the farmer’s eye,” Pourreza said.

    The prototype Leaf Monitor tool is free and included in a set of tools that can be downloaded on the Digital Agriculture Laboratory website. A web-based version of the tool will follow while the team continues to feed new data into the algorithm to refine the predictions. On average, it achieves about 65% accuracy across all traits, with predictions for certain nutrients, such as nitrogen and phosphorus, performing better than the overall average. Users will need to pair it with a spectrometer.

    “We need to produce more food while using less resources so we need to have some kind of monitoring system to give us precise and accurate feedback on our management practice,” Pourreza said. “This technology is growing very fast.” — By Emily Dooley, UC Davis

  • Turning Food Scraps into Opportunities

    For every juicy tomato or crunchy almond California grows, there’s a pile of pulp, hulls or scraps that often goes to waste. A new online tool, created by University of California, Davis researchers, tracks those agricultural byproducts aiming to find innovative ways to put them to use.

    The Byproduct Database, maintained by the AI Institute for Next Generation Food Systems, is an ongoing research project that includes a catalog of byproducts like fruit skins and nut shells, and potential ways to reuse them across different industries.

    Edward “Ned” Spang, principal investigator and associate professor with the Department of Food Science and Technology, said about one third of the food produced worldwide, doesn’t get eaten. The database consolidates information about food waste in one place, detailing what the various leftovers are made of and where they’re available in the state. Spang believes it could help guide decisions on reducing waste by potentially turning these materials into new products for food, cosmetics or pharmaceutical industries.

    “In the food production space, there’s a lot of edible material, or potentially valuable material, that’s been overlooked for a long time as waste,” Spang said. “So, the questions we are trying to understand include: ‘How much of this material is out there? What is it composed of? Where is it? When is it available?’”

    Tomatoes, almonds, pistachios and pomegranates

    The pilot phase of the database currently features four major crops: tomatoes, almonds, pistachios and pomegranates. As the research team continues to gather data, they will update the site to include other crops and byproducts, including wine grapes, stone fruits and citrus. In collaboration with Ilias Tagkopoulos with the Department of Computer Science, Spang is looking into developing and applying AI tools to expand the site faster and with less manual work.

    For pistachios, the website illustrates that the largest byproduct is the hull, which is often discarded, and that undersized pistachios could be a valuable resource if there was a market for it. The website helps outline the various byproducts for potential upcycling, where leftovers are transformed into new ingredients. Local companies are already developing new products using materials such as brewers’ spent grain (a byproduct of beer production), okara (a fibrous byproduct from soymilk production) and grape pomace (leftovers from winemaking).

    Researchers are looking at where food gets lost in the field and at the processing plant. With tomatoes, some get damaged on the vine, others get tossed out for not meeting quality standards. Spang said those leftovers, or side streams, are opportunities for upcycling.

    “It’s a material that’s already been cultivated, harvested and processed, so anything you do that’s economically productive means that all the resources embedded in that material, like fertilizer, water and energy, were not wasted in vain,” said Spang, who also directs the Robert Mondavi Institute of Wine and Food Science. “It is a real win-win opportunity.”

    Finding new uses

    The skin and pulp of a tomato contain lycopene, an antioxidant known for its health benefits. Users of the website can visualize where these leftover tomato parts, and its valuable lycopene, are found, helping to imagine new ways to make use of this healthy compound.

    “We expect our primary user to be entrepreneurs who are looking for new business models in upcycling, or who might have an advanced extraction technology to derive value from some of these overlooked materials,” Spang explained. “But producers and growers would also benefit as new revenue streams deliver value up and down the food supply chain.”

    The database will soon include cost estimates and economic variables to help users make more informed decisions. This will allow them to assess factors like how much lycopene is in a byproduct, its value per milligram and the costs associated with extracting it.

    New space for agricultural innovation on campus

    The research project is funded by a grant from the Resnick Agricultural Innovation Research Fund, created by a $50 million gift by Lynda and Stewart Resnick, co-owners of The Wonderful Company. Part of that donation also establishes the Resnick Center for Agricultural Innovation, currently under construction on campus, that will include a large space for biomass staging and extraction, a process to pull valuable compounds from fruits, vegetables and grain residues.

    Food waste happens, but this work is helping build a food system that wastes less and supports sustainability, which Spang hopes will excite everyone.

    “We have to be a little more creative with our food system,” he said. “We can make our current food system more productive by investigating novel upcycling ideas and processing systems that create more revenue for producers and hopefully deliver more value to consumers as well.” — By Tiffany Dobbyn, College of Agricultural and Environmental Sciences, UC Davis, tadobbyn@ucdavis.edu

  • Questions about Growing Agave in California?

    Agave may be a slow-growing plant, but the rush to farm the drought-tolerant crop in California has been rapid. Since 2023, agave acreage has quadrupled in the state, from 50 acres to over 200.

    Photo Caption: Yessica Fernandez Galicia is a researcher who’s organizing a webinar series to meet the most pressing questions from California agave growers. Photo by Rob Padilla

    With all those new agave farms popping up, more farmers are seeking advice to best care for this hardy succulent. To meet that need, agricultural experts from UC Agriculture and Natural Resources and UC Davis surveyed English-speaking and Spanish-speaking agave growers on their top concerns. So far, they’re received over 50 responses and counting.

    “With this survey, we’ve identified 30 farmers that we didn’t have on our radar before,” said Yessica Fernandez Galicia, a UC ANR and UC Davis agave researcher.

    Growers’ responses focused on many of the same themes: How much should you water an agave plant? Which pests and diseases affect agave? Can you get certified for growing agave sustainably?

    Those survey results have been put to good use. Based on grower input, UC ANR has developed a series of free, virtual webinars about agave, offered every month from August to December. The sessions are open to all, but please register ahead of time:

    Regenerative Agave and Certification — Aug 28, noon-1 p.m.

    Rodrigo Mestas – Agave grower in Jalisco, Mexico. Mestas is the owner of the first Regenerative Tequila Certificate, which was awarded to his business, Tequila Torrente.

    Cooperatives and Collective Action — Sept. 25, 12:30-1:30 p.m.

    Deborah Yashar – Agriculture and food co-op specialist in the California Center for Cooperative Development.

    Agave and Dry Farming Practices — Oct. 16, noon-1 p.m.

    Steve Sanchez – California farmer and consultant who promotes agave and cactus cultivation through sustainable practices and dry farming. Sanchez hosts the podcast Agave & Cactus Talk.

    Cultural Appropriation: The Significance of Maguey and Mezcal to Zapotec People — Nov. 13, noon-1 p.m.

    Fabiola Santiago – Activist, researcher, and cultural entrepreneur, originally from Oaxaca, Mexico, and raised in California. Proudly Zapotec, she dedicates her work to defending and preserving Oaxacan culture.

    Photo Caption: Agricultural experts from UC ANR and UC Davis surveyed new and long-time agave growers as the drought-tolerant crop gains popularity in California. Photo by Rob Padilla

    The webinars cover multiple topics, including grower certification and irrigation practices. According to Fernandez Galicia, attendees will leave with economic and environmental takeaways.

    “We are trying to educate people that the agave doesn’t need a lot of water. If you give them a lot of water, they don’t generate the adequate quantities of sugar,” she said.

    That means overwatering could make the agave unusable for commercial products like alcohol or biofuel. Cutting water use also can be a cost-saver and environmentally responsible in this drought-prone state.

    “The principal goal is to encourage practices that care for the earth and make farming more sustainable,” said Fernandez Galicia. — By Caroline Champlin, UCANR

  • Registration Opens for 2026 Farm Robotics Challenge

    The Farm Robotics Challenge, the only collegiate agricultural robotics competition of its kind, is officially launching its 2026 season. Registration is now open for undergraduate and graduate student teams from two-year and four-year colleges and universities across the United States and worldwide.

    The competition tasks students with designing, prototyping and field-testing robotics and AI-driven solutions to tackle real challenges facing modern agriculture. The Challenge is organized by UC ANR Innovate, the innovation arm of University of California Agriculture and Natural Resources, in partnership with the AI Institute for Next Generation Food Systems (AIFS).

    “What makes the Farm Robotics Challenge unique is that students work directly with farmers to identify and solve real problems,” said Gabe Youtsey, chief innovation officer at UC ANR and founder of UC ANR Innovate. “Teams are developing practical solutions growers can put to work, and the hands-on experience prototyping and field-testing prepares students for careers in agricultural technology, while helping address some of the pressing challenges our growers face today.”

    Lead sponsor the Reservoir to award Grand Prize investment

    The Challenge is pleased to announce a partnership with the Reservoir, a leading early-stage venture capital investor and robotics incubator dedicated to accelerating real-world agricultural technology. The Reservoir joins this year as a lead sponsor, bringing with it a commitment to help student innovations leap from concept to commercialization.

    As part of this partnership, the Reservoir will award a $50,000 Grand Prize investment to the winning team. This seed funding goes beyond a traditional competition prize, as it provides a powerful springboard for turning student-built prototypes into market-ready solutions with real agricultural impact.

    “The future of agriculture will be shaped by deep tech innovators who can move quickly from lab to field,” said Danny Bernstein, CEO of the Reservoir. “The Farm Robotics Challenge brings together the kind of early-stage talent we’re eager to back – engineers, scientists and entrepreneurs with the vision to tackle real problems and the grit to commercialize their solutions. By pairing this year’s $50,000 Grand Prize investment with our on-farm incubation and venture support, we aim to help these prototypes evolve into scalable companies delivering breakthrough technologies for growers.”

    Central to the competition is the expectation that student teams work directly with growers to identify prominent issues in agriculture that could be addressed using advanced robotics, AI and automation.

    “With this challenge, teams can target a broad range of agricultural activities, such as planting, weeding, harvesting, pest management and crop monitoring, as well as focused projects in data collection, mapping and on-farm automation,” said Steve Brown, associate director of the AI Institute for Next Generation Food Systems.

    Teams are encouraged to design and prototype solutions, using robotic platforms equipped with autonomous navigation systems, intelligent algorithms and custom attachments to address real-world agricultural problems. These projects are field-tested, ensuring that they are not only theoretically sound but also practically viable in production agriculture environments.

    Supported by leading technology partners such as Bonsai Robotics, the competition places strong emphasis on innovation, hands-on learning and collaboration with growers.

    “For the past four years, we’ve partnered with UC ANR Innovate and AIFS on the Farm Robotics Challenge because we believe the future of farming depends on the next generation of innovators. There are big problems to solve in how we grow our food, and we want these inventive, engineering minds focused on them,” said Brendan Dowdle, chief business officer at Bonsai Robotics. “Our robotics platform makes it easier to design, test and deploy AI, computer vision and autonomous systems. Every year, we’re inspired by the creativity and technical skill these students bring to the field, and the ideas just keep getting bigger. We can’t wait to see what they build next.”

    Prizes offered as part of multi-phase competition cycle

    The competition unfolds across several stages, beginning with the registration period starting in August, followed by a team formation and proposal research phase through October. Project proposals must be submitted by October 30, 2025.

    Teams then embark on a six-month development and testing phase, culminating in final project submissions due on May 3, 2026.

    The competition concludes with an awards ceremony set for May 20, 2026.

    Participation in the Farm Robotics Challenge offers numerous benefits. The competition will award over $100,000 in prizes across multiple categories, and select teams will be offered travel stipends to showcase their projects at FIRA USA, North America’s leading ag tech conference. Beyond the prizes, all participants gain access to a network of academic and industry professionals dedicated to building the future of farming.

    Throughout the competition, educational webinars will be available to help students stay informed about industry trends, develop entrepreneurial skills and gain valuable insights on topics such as intellectual property, company formation and venture capital financing, presented by experts from Morrison Foerster.

    “We are excited to partner with UC ANR Innovate and AIFS on the Farm Robotics Challenge,” said Michael Ward, co-head of the Morrison Foerster Food and Ag Practice. “To ensure that teams get their industry-changing ideas off the ground, it is critical that they have a solid understanding of the legal issues that arise when launching and growing a startup company in this field.”

    The webinars will feature interactive sessions designed to introduce teams to the legal knowledge needed to start and grow a business, protect their innovations and navigate the challenging regulatory landscape.

    “We will offer free confidential office hours to all competition participants to answer legal questions and provide guidance on moving their ideas into a company and taking steps to commercialization,” said Mitchell Presser, co-head of the Morrison Foerster Food and Ag Practice.

    Throughout the competition, student teams develop practical skills at the intersection of technology and agriculture, expand their professional networks and engage with a distinguished panel of evaluators and innovators.

    Past competitions have featured over 40 teams from across the U.S. and abroad, with previous winners including UC Davis, University of Georgia, University of Hawaiʻi at Mānoa and Olin College of Engineering (click to view past results).

    For those interested in participating, prospective teams are advised to assemble members with a range of technical expertise and secure a faculty or staff advisor. The next step is to partner with a grower to identify a meaningful agricultural problem and then design and rigorously test a solution using advanced robotics and AI.

    Comprehensive information, official rules and regular updates can be found on the Farm Robotics Challenge website. You can also register to participate in the Farm Robotics Challenge Info Session Webinar on September 10 at 4 p.m. (PDT).

    New for the 2025-26 academic year is the Farm Robotics Academy, intended for secondary school students. The Academy aims to equip both educators and students with knowledge and skills in leading-edge technologies that are reshaping the agricultural landscape. Learn more at https://www.farmroboticsacademy.ai/.

    Farm Robotics Challenge

    The Farm Robotics Challenge is organized by UC ANR Innovate and the AI Institute for Next Generation Food Systems, with lead support from the Reservoir, technology partner Bonsai Robotics, as well as Western Growers, Morrison Foerster, F3 Innovate, Taylor Farms, Beck’s Hybrids, Google.org, the California Tomato Research Institute, Linak U.S., and Plug and Play. The competition challenges college-level teams to identify and solve real-world agricultural problems using advanced robotics technology.

    For more information about the Farm Robotics Challenge, including details on how to participate or sponsor, visit https://farmroboticschallenge.ai.

    UC ANR Innovate

    UC ANR Innovate brings together people, resources and ideas to accelerate agricultural, food and biotech innovation in California. UC ANR Innovate develops practical technologies, generates research and policy insights, prepares a future-ready workforce and builds the ecosystems and partnerships that make innovation possible: locally, regionally and globally.

    The AI Institute for Next Generation Food Systems

    The AI Institute for Next Generation Food Systems (AIFS) is a USDA-National Institute of Food and Agriculture-funded research institute leveraging artificial intelligence to solve the world’s biggest challenges to crop and food production: ensuring a sustainable, nutritious, efficient and safe food supply while mitigating the impacts of changing conditions. For more information, visit https://aifs.ucdavis.edu.

    The Reservoir

    The Reservoir is a startup incubator and venture capital fund focused on helping ag tech startups succeed where agriculture happens – in the field. Reservoir Farms is the world’s first on-farm robotics incubator, starting in the Salinas Valley and expanding to other key regions like the Central Valley. Reservoir Ventures backs startups solving real problems in high-value crops. By combining R&D space, hands-on grower input and early-stage capital, the Reservoir helps turn promising ideas into tools for the growers who feed the world. Learn more at https://reservoir.co.

    Bonsai Robotics

    Bonsai Robotics is reimagining the agricultural industry with its AI-first platform that makes autonomous farming affordable, easy to use, and deployable across all farm equipment – whether retrofitted onto existing machines or built into next generation solutions. Its acquisition of farm-ng in 2025 combines its leading, vision-based autonomy software with modular, electric robotics to deliver next-generation machines adaptable for a wide range of crops, tasks and environments. Bonsai empowers growers to monitor and manage all farm equipment – new or legacy, autonomous or not – through a single, intuitive app. Learn more at www.bonsairobotics.ai.

    Morrison Foerster

    Morrison Foerster is a leading global law firm, with clients including some of the most innovative companies – from trailblazing startups to Fortune 100 enterprises. Morrison Foerster is the firm for Food + Agriculture, representing stakeholders across the value chain, from scientists in labs optimizing plant genetics, to farmers nurturing crops, to ag tech pioneers revolutionizing farm technology, to CPG companies and global brands selling your favorite foods. With unmatched scientific depth and deep sector knowledge, Morrison Foerster has helped shape the sector for over two decades. For more information, visit www.mofo.com.

    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.