Cooperative Extension San Joaquin County
University of California
Cooperative Extension San Joaquin County

UC Cooperative Extension

ACP (Asian citrus psyllid) found in San Joaquin county

The ACP (Asian citrus psyllid) was found in Lodi and Manteca.  Click here to find out how you can help prevent the spread of this unwanted pest and what to do if you think you have it.

Who We Are

Across California, the University of California’s 64 Cooperative Extension offices are local problem-solving centers. We are the bridge between local issues and the power of UC research. Our county-based staff is part of the community – we live and work in the areas we serve.

More than 300 campus-based specialists and county-based farm, home and youth advisors work as teams to bring practical, unbiased, science-based answers to problems across California.

As part of the agricultural community, we help farmers develop more-efficient growing methods, solve pest management problems and develop crops and irrigation methods that use less water.

As stewards of the land, we help develop smart water-use strategies, develop wildfire education and help preserve natural areas and farmland.

As advocates for healthy communities, we promote healthy diets and exercise for better health, help Californians learn to choose the most nutritious foods and help shape the citizens of tomorrow through the 4-H Youth Development Program.

And thousands of volunteers extend the reach of our work through the Master Gardener Program and the California 4-H Youth Development Program.

We work in full partnership with federal, state, county and private resources.

We are stewards, problem-solvers, catalysts, collaborators and educators.

We are UC Cooperative Extension.

UC Blogs

Butterfly Summit: Are Butterflies Heralds of Apocalypse?

A male monarch seeking nectar in Vacaville, Calif. (Photo by Kathy Keatley Garvey)

"The butterfly counts not months but moments, and has time enough," wrote the late poet Rabindranath Targoe (1861-1941) of Bengali, who won the Nobel Prize in Literature in 1913. There may not be "time enough" for some species that are rapidly...

Posted on Friday, April 19, 2019 at 3:33 PM
Focus Area Tags: Agriculture,Environment,Family,Food,Health,Innovation,Natural Resources

A Bee-Line to the Bohart Museum: T-Shirts and Calendars

Bohart associate Fran Keller, an assistant professor at Folsom Lake College and a UC Davis alumnus (she received her doctorate in entomology studying with Lynn Kimsey) holds some of the new dragonfly t-shirts available at the Bohart Museum. (Photo by Kathy Keatley Garvey)

Folks are making a bee-line to the Bohart Museum of Entomology, University of California, Davis, for its spring sale. All proceeds support the insect museum in its educational and outreach activities. The gift shop is offering a selection of...

Posted on Thursday, April 18, 2019 at 5:08 PM
Focus Area Tags: Family,Innovation

'Adventure Awaited' at Virtual Reality Demonstration

UC Davis medical entomologist Geoffrey Attardo shows Sebastian and Kamila Ehrlich examples of  what insects they might want to see in virtual reality. In back is their mother, Carollina Ehrlich. (Photo by Kathy Keatley Garvey)

"Adventure Awaits!" the theme proclaimed. And that it did Saturday at the 105th annual UC Davis Picnic Day--especially at the second annual "Virtual Reality Bugs" display at Briggs Hall, the administrative home of the UC Davis Department of Entomology...

Posted on Wednesday, April 17, 2019 at 2:03 PM
Focus Area Tags: Agriculture,Environment,Innovation,Natural Resources

Make a Gift Online

Brent A Holtz Ph.D.


San Joaquin County Cooperative Extension
Robert J. Cabral Ag Center

2101 E. Earhart Avenue, Ste 200, Stockton, CA 95206
Phone: (209) 953-6100
Fax: (209) 953-6128
Click here for a map

Ag Center May 2008


Event Name

UC Blogs

Ghost pines, live oaks, black oaks and madrones, among other trees, make their stand interspersed with annual and perennial grasses at the headwaters of a California watershed. (Photo: David Lewis) Headwaters
I have the privilege of engaging California's communities with the aspiration of safeguarding the sustenance and well-being that its oak-woodland watersheds and the people that are a part of them provide. This millennia-long integrated relationship of...

A workshop participant was invited to explore all senses of gardening, with flowers, seed packets and garden tools. (Photo: Debbie Handal) UC Master Gardeners partner with Alzheimer's San Diego in Reminiscence Gardening project
The UC Master Gardener Program of San Diego County has always been open to innovative ways of expanding its mission and passion for gardening into new parts of its community. The San Diego program has a rich history of successful partnering with other...

Fire resilient forests have the benefit of offering greater access for recreation. (Photo: Butte County Fire Safe Council) The worst fire in California history illuminates fire preparation needs
Four months have passed since the Camp Fire, the worst wildfire in California history, ravaged bucolic communities in the Butte County foothills, including Paradise, Concow, Butte Creek Canyon, Cherokee, Yankee Hill and Magalia. Eighty-five people died,...

UC ANR vise provost Mark Bell leads a classroom discussion in Guatemala. UC ANR working with USDA to strengthen extension and farmer incomes in Guatemala
Two UC Agriculture and Natural Resources emeritus specialists, two UC ANR advisors and a UC ANR vice provost spent a week in March working in Guatemala to help implement a USDA-funded (UC Davis-managed) project that is rebuilding the extension...

UC West Side REC agricultural technician Tracy Waltrip conducting soil hydraulic conductivity determination in the NRI Project field. Soil Health Institute scientist visits UC’s long-term soil health experiment in Five Points
Shannon Cappellazzi, one of six project scientists involved in an expansive Soil Health Institute (SHI) initiative, visited the UC West Side Research and Extension Center in March to take soil samples from research plots managed for 20 years with soil...

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