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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

Arboretum Plant Sale on Oct. 22: Yes, There's Life After Lawn

Monarch butterfly nectaring on Buddleia 'Purple Haze.' This will be one of the plants offered at the UC Davis Arboretum Plant Sale on Oct. 22. (Photo by Kathy Keatley Garvey)

Is there life after lawn? Yes. If you're looking for plants to attract pollinators, including bees and butterflies, then the UC Davis Arboretum's Plant Sale on Saturday, Oct. 22 is the place to "bee." A public fall clearance sale will be held from 9...

Posted on Friday, October 21, 2016 at 2:52 PM

Zeroing in on the Zika Virus at ICE 2016

Nobel Laureate Peter Agre (center), a keynote speaker at ICE 2016, is flanked by the ICE 2016 co-chairs,  Walter Leal (left) of UC Davis, and Alvin Simmons of the USDA/ARS, based in Charleston, S.C.

The yellow fever mosquito, Aedes aegypti, probably isn't the only mosquito that transmits the Zika virus. That's what UC Davis chemical ecologist Walter Leal, co-chair of the International Congress of Entomology (ICE 2016) recently held in Orlando,...

Posted on Thursday, October 20, 2016 at 3:55 PM

A Boy, Bugs, a Birthday and the Bohart

UC Davis entomology undergraduate student Wade Spencer (left) and budding entomologist Ty Elowe of Mesa, Ariz., show their bugs. (Photo by Kathy Keatley Garvey)

A 12-year-old boy from Mesa, Ariz. with a lifelong interest in bugs, got what he wished for last week at the Bohart Museum of Entomology, University of California, Davis. This story is about a boy, bugs, a birthday and the Bohart. Ty Elowe, who seeks a...

Posted on Wednesday, October 19, 2016 at 8:19 AM

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

Farmers and industry professionals gather at a UC Cooperative Extension field day at the Tellarico Farm in Manteca, Calif. Planet-friendly orchard recycling makes money sense
Posted 10/20/2016 - The numbers are beginning to trickle in confirming UC Cooperative Extension advisor Brent Holtz' hunch. Chipping and returning expired almond orchards into the soil where they grew is not only environmentally sound, it is economically...

Retired U.S. Forest Service fire chief Jeanne Pincha-Tulley, second from right, is among the inspiring women leaders encouraging women to aspire to be wildland fire managers at the Women-in-Fire Prescribed Fire Training Exchange. Women learn to burn and lead in fire management in Northern California Oct. 19-28
Posted 10/17/2016 - Workshop aims to spark women's ambition to become leaders in fire management Shortly after her son was born, Jeanne Pincha-Tulley was promoted to fire chief of a national forest. For the first six months, she brought the baby to work. “Most of...

Lenya Quinn-Davidson, UC Cooperative Extension advisor and director of the Northern California Prescribed Fire Council, is organizing the first-ever Women-in-Fire Prescribed Fire Training Exchange. Photo by Larry Luckham Lighting up a new path: the Women-in-Fire Rx Fire Training Exchange (WTREX)
Posted 10/13/2016 - On Monday, Oct. 17, participants will gather in northwestern California for the first-ever Women-in-Fire Prescribed Fire Training Exchange (WTREX). The 12-day hands-on prescribed fire training, modeled after similar TREX events that take place across...

Scenario screen from the course. New online course helps growers prevent illegal pesticide residues
Posted 10/12/2016 - Last month, a California grape farmer was fined $10,000 for using a pesticide in violation of the label, then packing and attempting to sell the tainted fruit. DPR detected the residues of a pesticide on the produced that was not registered for...

California rice plots are being harvested for the 2016 UCCE Rice Yield Contest. (Photo: Evett Kilmartin) Harvest is underway for the 2016 UCCE Rice Yield Contest
Posted 10/6/2016 - Contestants in California's rice growing region have worked all summer, and now researchers are harvesting designated plots to be entered into the 2016 UC Cooperative Extension Rice Yield Contest. The contest is in its second year, following a pilot...

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