Posts Tagged: research

REC System Director Haver encourages systemic approach to agriculture

Agriculture generates $59 billion and employs nearly 400,000 individuals in California. The industry, however, is often threatened by challenges like climate change, land conversion and water scarcity. Motivated to act, Sustain Southern California – an organization associated with UC Irvine Beall Applied Innovation – hosted a roundtable discussion on Feb. 20 featuring subject matter experts including Darren Haver, director of UC Agriculture and Natural Resources' Research and Extension Center System.

During his keynote address, Jose Arriaga, Orange County Agricultural Commissioner, defined sustainability as food and fiber production that does not compromise the ability for future generations to meet their needs. In doing so, he acknowledged the benefit of discussing such timely topics with key players, especially for places where agriculture is not as prevalent as it used to be. 

“Many people don't think of Orange County as a place for agriculture. It's probably because less land is being reserved for agriculture, not like back in the day. And that worries me,” said Arriaga. 

The first roundtable discussion centered on sustainable agriculture, with Haver participating alongside other industry leaders based in Southern California, including A.G. Kawamura of Orange County Produce, Steve Brazeel of Sunterra Produce and Elevated Foods, Anthony Curci of Buttonwood Ranch and Parker Cohn from Performance Resource Management.

In discussing today's generation, Haver said that he has seen a shift over the last few decades away from yield alone, which used to be the most important aspect of production in agriculture. Today, much more attention is dedicated to sustainability – a change that Haver attributes to the younger generation of researchers and plant scientists working in agriculture.

There has also been an emphasis on sustaining the environment while maintaining economic progress. Haver recognized these important elements, but highlighted the social impact of sustainability, too.

“I don't have all the answers, but I do believe that addressing the environmental, economic and social aspects of agriculture is important. I also think that these factors should be addressed systemically rather than in silos,” said Haver.

Southern California agricultural producers, in particular, are responsible for $7.8 billion in gross receipts and nearly 100,000 jobs directly related to agriculture. In Orange County alone, where Haver is based at the South Coast Research and Extension Center, agriculture makes up $86 million of total economic output, with nurseries leading as a top commodity followed by fruit trees, vegetable production and livestock and apiary.

UC Master Gardeners of San Diego celebrates 40 years of service to community

For 40 years, the University of California Master Gardener Program of San Diego County has upheld its mission of providing research-based information about home horticulture and pest management to the public, while earning and sustaining the community's trust in doing so.

“People trust UC Master Gardeners to provide accurate advice on gardening because they are trained by UC ANR [UC Agriculture and Natural Resources],” said Vincent Lazaneo, emeritus urban horticulture advisor and the first UC Master Gardener program coordinator for San Diego County.

The UC Master Gardener program, a public service and outreach program under UC ANR, is administered by local UC Cooperative Extension offices and outreach is provided by trained volunteers.  In 1983, the UC Master Gardener program of San Diego County started with about 30 volunteers. Today, more than 350 volunteers serve the program, which is now managed by program coordinator Leah Taylor.

In San Diego, UC Master Gardeners have had a significant presence in schools, where they encourage an appreciation for plants and our planet; at the county fair where they field hundreds of questions related to plant care; and in community spaces such as Balboa Park and the Carlsbad Flower Fields where they staff demonstration gardens.

“Having the UC behind us is huge,” said Anne Perreira, UC Master Gardener and current president of the Master Gardener Association of San Diego County. “It opens doors for us and gives us credibility.”

'Dual citizenship' status expands capacity for support

When Lazaneo started the UC Master Gardener program in 1983, he felt the need to establish a formal association or 501(c)(3) nonprofit organization that would support the program.

Unsure of what the future held, Lazaneo believed that nonprofit status would increase the UC Master Gardeners' flexibility regarding project development, community engagement and financial planning. After 10 years, the UC Master Gardeners of San Diego County were approved as a registered nonprofit organization and became simultaneously known as the Master Gardener Association of San Diego County.

“It can be confusing for people when they hear that we're a UC program and an association,” explained Taylor. “It's like ‘dual citizenship' in a way, and I think the most important thing to know is that our status as a nonprofit and affiliation to UC work in conjunction to not only support the UC Master Gardeners and what they do in San Diego, but their ability to support UC Master Gardener programs in other counties.”

Emphasizing the research-based approach

Taylor, who has been the program coordinator since 2021, said that the UC Master Gardener program is instrumental in extending the work of UCCE advisors. “If you're working on research and you need to get that information out into the public, we've got 350 UC Master Gardeners who are trained and available to communicate on your behalf,” Taylor said.

“For me it's like a multiplier effect: how many San Diegans can I reach by teaching a seminar on small-scale hydroponics? Maybe 20 or 30,” said Gerry Spinelli, UC Cooperative Extension production horticulture advisor for San Diego County. “But how many can I reach by training 20 or 30 UC Master Gardener volunteers on the same topic? Maybe 200 or 300.”

Spinelli, who also advises the UC Master Gardeners for San Diego County, said that the group has been instrumental in data collection and disseminating information to the public, particularly in urban underserved areas.

Lazaneo recalls the UC Master Gardeners establishing a partnership in 1983 with Cuyamaca College in El Cajon. The college's Horticulture Department allowed the UC Master Gardeners to develop a research garden on campus. After setting a perimeter, building a fence, installing irrigation lines and rototilling the soil, the UC Master Gardeners planted different tomato varieties that were used in a statewide study assessing plant performance for home gardens.

In addition to educating and equipping the public, the UC Master Gardeners of San Diego County have contributed to research efforts on specific crops, including the development of a new artichoke variety, Imperial Star, with guidance from Wayne Schrader, former UCCE vegetable crops advisor for San Diego County. 

The research garden, which was used for more than a decade, also aided in research efforts evaluating asparagus varieties, horned cucumbers called “Kiwano,” a fruit similar to melon called pepino dulce, sweet peas, rhubarb and many others. Similarly, the research garden has contributed to trials for soil solarization and chemical treatment to control root knot nematodes and expanded understanding of powdery mildew's impact on summer squash.

Evolving with the times

Out of 170 applications, Lazaneo selected about 30 individuals to be a part of the first class of UC Master Gardeners for San Diego County. Carol Graham, who is still active today, was in the original cohort that formed in 1983.

Graham said that “times have certainly changed,” and one of the changes she's noticed since joining UC Master Gardeners is the proliferation of insects. “I don't remember pests being a severe issue when I first started. Now, you've got all kinds of bugs that have moved into the county, causing people to overuse and misuse pesticides,” said Graham.

Graham's 40 years as a UC Master Gardener have given her an opportunity to teach people how to overcome their phobias of bugs and how to use pesticides safely and appropriately. Furthermore, her role as a UC Master Gardener has allowed her to teach others how to grow their own food in hopes of enhancing food security in the county, something she cares deeply about.

The UC Master Gardeners also have changed the way they communicate over the years. DeLayne Harmon, vice president of member services, is well-versed in the program's history.

“Before we began tracking our volunteer hours online, do you know what the UC Master Gardeners did back in the day?” asked Harmon, who joined UC Master Gardeners in 2020. “They wrote everything down by hand, with pen and paper!”

“It's easy to have the mentality that's like, ‘This is how we've always done things,'” said Harmon. “But the UC Master Gardeners know that there is always room for improvement, and we welcome opportunities to be better.”

Giving back and putting people first

The UC Master Gardeners of San Diego County are eager to improve access to fresh food in schools. Recently, the UC Master Gardeners were given a $5,000 grant by the Sage Garden Project, which will be used to partner with schools in under-resourced communities.

“We want to be in places where the people don't know about UC Master Gardeners,” said Perreira, the association president. “We realized that there are a lot of students who don't know what fresh food looks like and we want to change that.”

In 2022, the UC Master Gardeners transformed a landfill into a demonstration garden, now called the Paradise Hills Native Garden, which they also maintain. “It's beautiful and there are walking trails for the community to enjoy,” Taylor said. “The native garden is in a neighborhood that doesn't have a lot of green space, and to have something so beautiful, that encourages community gatherings, it's a good thing.” 

Looking to the future of the UC Master Gardener program in San Diego, Taylor says that she wants to continue making an impact in the community and having the UC Master Gardeners be that driving force.

Grateful for Taylor's leadership, Spinelli said that he is excited about the program's impact on food education, particularly in food deserts.

“We are blessed with a climate that allows year-round food production, and with the science-based knowledge offered by the UC system, our UC Master Gardeners can provide San Diego County residents with the tools to grow local, healthy, nutritious, safe and environmentally friendly food for their families,” Spinelli said.

When reflecting on how far the UC Master Gardeners of San Diego County have come, Perreira – who has been a UC Master Gardener since 2016 – emphasized how important it is to continue their legacy of doing good in and with the community. “We've got a diversity of skills within our group and I'm ready for us to expand our capacity to create change. What we do and what we say have to mean something!” she said.

To read this story in Spanish, visit: https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=59028

Winter season: A time for food safety systems re-evaluation and education for food hubs

The holiday meal season is often a busy time for food hubs – entities that handle the aggregation, distribution and/or marketing of source-identified regional food – as restaurants, retailers and consumers fill their tables and shelves with an abundance of fresh, local products. However, the subsequent winter months can provide a valuable time for reflection and re-evaluation of a food hub's systems and processes. In this spirit, it may be helpful to remind people working at food hubs that University of California Sustainable Agriculture Research and Education Program (UC SAREP)  offers a suite of food-safety resources – in English and in Spanish – on its website. 

Educational resources include: 

• A step-by-step guide for food hubs on how to pursue a third-party food safety audit with guidance on how to navigate buyers' questions.
• Two sample food-safety plans intended as a starting point to be adapted to a food hub's specific operations and practices.
• Example standard operating procedure, or SOP, documents related to 11 common tasks carried out by food hubs.

“We hope these resources can play a role in helping food hubs to adopt best practices and control risks related to food safety,” says Gwenael Engelskirchen, sustainable food and farming coordinator with UC SAREP,  who led the development of these educational tools. 

According to the Centers for Disease Control and Prevention, approximately, 1 in 6 Americans (or 48 million people) gets sick and 3,000 die of foodborne diseases annually. In 2011, to help prevent the occurrence of foodborne illness, the federal government enacted the Food Safety Modernization Act (FSMA), designed to outline actions to be taken at various points along the supply chain for both human and animal food. 

UC SAREP's Food Safety Resources for Food Hubs are intended to help food hubs navigate these food-safety regulations and accompanying best practices. Resources are also available in Spanish at Recursos de seguridad alimentaria para los centros de distribución de alimentos. 

Food safety certification guide

Some buyers verify a supplier's food safety program by requiring an audit performed by a third-party certification body or auditing company. This Guide to Food Safety Certification offers key considerations before deciding to pursue a food safety audit and helps users navigate the food safety certification process. 

Food safety plan

Food hubs that meet the criteria for full compliance with FSMA's Preventive Controls for Human Food Rule are required to have a food-safety plan in place. And for all food hubs, having a shared document describing the facility's operations and how potential risks of food contamination are managed is a good idea. Two sample food safety plans, inspired by the operations of food hubs in California, provide a starting point and can be adapted to a hub's own operations. 

Standard operating procedures

Standard operating procedures provide detailed step-by-step instructions for how to carry out operational tasks within a food facility. The standard operating procedure samples cover common topics such as handwashing, facility cleaning and more, and are intended to be adapted to a food hub's specific operations and practices. 

Jacob Weiss from Spork Food Hub in Davis said, “the templates were a great starting place for us to build the framework of our food safety plan. It helped us figure out what we needed to (and didn't) need to include. I think the SOPs are also really useful because they are broad enough to get you started but flexible enough to add the specific practices of your business or hub.”

For additional information, visit UC SAREP's webpages on Food Safety Resources for Food Hubs or Recursos de seguridad alimentaria para los centros de distribución de alimentos. 

These resources and tools were developed in collaboration with various project partners, including Department of Food Science and Technology at UC Davis, Department of Population Health and Reproduction at UC Davis School of Veterinary Medicine, Center for Precision Medicine and Data Science at UC Davis Health, and Community Alliance with Family Farmers.

UC awards Brodt $2M to advance soil health, climate-smart farming practices

Regional farms will demonstrate practices such as cover cropping, reduced tillage, compost and mulch use, hedgerow planting, optimized irrigation systems

To accelerate adoption of climate-smart farming practices, the University of California Office of the President has awarded nearly $2 million to a team of UC Cooperative Extension scientists and community partners working on a network of farm demonstration sites. The project will be led by Sonja Brodt, coordinator for agriculture and environment at the UC Sustainable Agriculture Research & Education Program. This UC Agriculture and Natural Resources project is one of 38 funded with $83.1 million allocated to UC by the State of California for climate action research and innovation.

Scaling up soil health and other climate-smart agricultural practices to sequester carbon, increase water and nutrient use efficiency, and improve the resilience of farms to climate-related threats like drought and floods is a core pillar identified in California's Natural and Working Lands Climate Smart Strategy. 

Climate-smart agriculture is a systems-based approach that requires localized adaptation across the diverse soils, cropping systems, socioeconomic and cultural contexts throughout California.

“Our project will strengthen the nascent California Farm Demonstration Network for on-the-ground, regionally specific demonstration of a range of climate-smart practices,” said Brodt. “Regional farms will demonstrate practices such as cover cropping, reduced tillage, compost and mulch use, hedgerow planting, irrigation system optimization and more.”

The $1,999,524 project will pilot a participatory partnership extension model that allows farmers to learn from their peers to reduce adoption risks and adapt knowledge to an ever-changing environment, increasing the likelihood of farmer success and accelerating long-term uptake of complex, place-specific practices. 

Building on the capacity of local trusted organizations, project collaborators will be organized in a hub-and-spoke network with three regional Farm Demonstration Hubs (Sacramento Valley, North Coast and Central Coast), a pilot Hmong/Mien Demonstration Hub, and a statewide Organic Demonstration Hub.

Collaborators at each hub will be responsible for identifying and nurturing farm demonstration sites, and conducting demonstration trials and farmer-to-farmer outreach activities. Centralized organization and capacity building will be provided by UC SAREP, UC Organic Agriculture Institute, the California Association of Resource Conservation Districts, the Community Alliance with Family Farmers, and the California Farm Demonstration Network Advisory Panel.

In addition to several UC Cooperative Extension advisors and specialists across the state, partners include the UC Hansen Research and Extension Center and the Rodale Institute California Organic Center, both in Ventura County, and the UC Climate Smart Agriculture Program. Eight Resource Conservation Districts will also be involved in leading Farm Demonstration Hubs.

The project will also conduct soil health assessment activities to inform soil health and resilience monitoring protocols in future research and extension efforts. Since many existing soil health metrics were designed for agroecosystems in the Midwest and Eastern U.S., this project aims to lay the groundwork for research to adapt soil health metrics to the arid and Mediterranean climates of California.  

“By utilizing relationships built between demonstration hub managers and demonstration farms across different cropping systems, we will gather quantitative and qualitative soil health data, information about growers' management practices as well as their own perspectives of what they really need to know about their soils in order to better manage for climate resilience and mitigation,” said Brodt.

Ultimately, the project partners aim to establish an enduring on-farm extension and research system that will help thousands of farmers adopt climate-smart practices tailored to their farms.

Other grant-supported projects focus on water access, conservation

The largest of the Climate Action Matching Grants, an $8.2 million investment, supports the development of planning tools to advance sustainable, inclusive and equitable water distribution for California's 39 million people. The project is led by Ted Grantham, a UC Cooperative Extension specialist in the Department of Environmental Science, Policy and Management at UC Berkeley. Kristin Dobbin, UC Cooperative Extension specialist in the Department of Environmental Science, Policy, and Management at UC Berkeley, and Erik Porse, director of the California Institute for Water Resources are collaborating on the project.

Three other projects involving UC ANR researchers received California Climate Action Seed Grants and Matching Grants subawards:

• Development of a hydrogel that can work as a soil amendment to help small-scale vegetable farms conserve water led by UC San Diego associate professor Shengqiang Cai with Ruth Dahlquist-Willard, UC Cooperative Extension small farms advisor and interim director of UC SAREP; Mallika Nocco, UC Cooperative Extension specialist; and Matthew Gilbert, UC Davis professor of whole plant physiology. $297,979

• Development of a tool for predicting climate-water variation led by UC Irvine professor Isabella Velicogna with Tapan Pathak, UC Cooperative Extension specialist. $199,531

• A study of urban stream corridors led by UC Davis professor Gregory Pasternack with Igor Lacan, UC Cooperative Extension environmental horticulture and urban forestry advisor. $33,824

• A study of how California's housing crisis affects the growth of the wildland urban interface (WUI), where the fringes of development reach into natural areas led by UC Santa Cruz professor Miriam Greenberg, with Barb Satink Wolfson, UCCE fire advisor, Devii Rao, UCCE livestock and natural resources advisor, and the Central Coast Prescribed Burn Association.

Updated 8/31/23 to add the wildland urban interface study.

Cooperative Extension fire advisor and UC graduate students gather around the fire

Besides starting fires for the sake of research, Luca Carmignani, UC Cooperative Extension fire advisor for San Diego, Orange, Los Angeles, and Riverside counties, has started leveraging his connection to local UC campuses by providing opportunities for hands-on learning.

Early one morning in May, students and staff from UC Irvine and UC Riverside gathered at the South Coast Research and Extension Center to collect data for their own research projects. South Coast REC, located in Irvine, is part of a statewide network of research and education facilities operated by UC Agriculture and Natural Resources. 

In one area of the field, graduate students picked leaves and twigs from dried shrubs, carefully placing them in a device that measures moisture content. In another area, a postdoctoral scholar set up a device that records levels of particulate matter, carbon dioxide and other air pollutants emitted  by a fire.

Tirtha Banerjee, professor in the Department of Civil and Environmental Engineering at UC Irvine, coordinated the field day with Carmignani. The two first connected as members of iFireNet, an international network of networks that connect people to fire research, when Carmignani was a postdoctoral researcher at UC Berkeley.

Now, the two are collaborating to help environmental science and engineering students realize the potential of their research interests.

Jacquelynn Nguyen, a Ph.D. student in the Civil and Environmental Engineering department at UC Irvine, is interested in understanding how ash from wildfires and prescribed burns can be used as a treatment for per- and polyfluorinated substances. PFAS are a group of “forever chemicals” that can be found in heat-resistant materials – including fire extinguisher foam – and are extremely difficult to eliminate.

Before Nguyen could collect her ash samples, Carmignani needed to cautiously set the dried shrubs on fire, providing a realistic situation for data collection purposes.

“We're trying to figure out if the ashes from these fires can be used as activated carbon, which could be used as a treatment for PFAS,” said Nguyen. “We want to see if this treatment can basically absorb PFAS and prevent it from traveling into soil and groundwater.” 

While Nguyen is concerned about the impact that wildfires have on the land, Soroush Neyestani, a postdoctoral scholar in the Environmental Sciences department at UC Riverside, is interested in its impact on the air quality.

During a fire, it's difficult to determine how much emissions are a result of flames versus smoldering, the process of burning slowly with smoke but no flames, and current air quality models do not provide accurate guidance on this matter. Using an air quality sensor, Neyestani wants to quantify the difference in emission levels during the two phases.

“There are assumptions that 50% of emissions come from smoldering, but every fire is different. Our main objective is to improve the accuracy of air-quality forecasting,” Neyestani said, noting his concern that these assumptions might not be realistic. 

Although the field day was created with the students in mind, Carmignani used the opportunity to polish his own research efforts. Since fall 2022, he has been investigating the flammability of low-water use landscape plants based on various irrigation applications.

“Every time we burn, I feel like we get better. We get better data, and we conduct better analysis, and that's really important for us so that we can figure out how we can apply our research and measure its outcome,” said Carmignani.

In addition to welcoming more collaborations with UC campuses and other organizations, Carmignani is hopeful that these combined research efforts will spark an interest in wildfire awareness everywhere.

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