UC Cooperative Extension
ACP (Asian citrus psyllid) found in San Joaquin county
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.
You probably don't think much about the blood-sucking tsetse fly--unless you're living in Africa or are planning to travel there. But if you're UC Davis entomologist-geneticist Geoffrey Attardo, you do. He led landmark research published Sept. 2 in the...
A life well-lived. Robbin Thorp, distinguished emeritus professor of entomology at the University of California, Davis, was a global authority on bees and he generously shared his expertise with others. "Robbin had a long, well-respected career in...
From honey bees to bumble bees to nematodes to mosquitoes to walnut twig beetles... Nine speakers are booked for the fall quarter seminars sponsored by the UC Davis Department of Entomology and Nematology. The seminars begin Wednesday, Sept. 25 and...
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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
Oaks in vineyards a ‘win-win’ for bats and growers
Californians love their oak trees. During vineyard development, Central Coast grape growers often feel compelled to leave an old iconic oak standing, even if it ends up right in the middle of their vineyard. While driving through the Central...
UCCE advisor addresses severe brown marmorated stink bug damage in Turlock orchard
Last May, a Turlock almond grower noticed nearly all the nuts on a row of trees in his orchard had fallen to the ground. “It looked like we shook this row,” he said. “I was scared. I thought the whole orchard was going to...
California’s first Prescribed Burn Association shows why we need more in the state
California's 2018 wildfire season was the deadliest and most destructive the state has ever seen. Even before the flames were extinguished, politicians, researchers, foresters, firefighters, insurance and utility company representatives, homeowners and...
The 2019 California Economic Summit registration opens
Gov. Gavin Newsom is slated to be the headline speaker Registration has opened for the 2019 California Economic Summit, to be held in Fresno Nov. 7-8. The summit, produced by California Forward (CA Fwd), marks the eighth annual gathering of...
California Agritourism website - a new resource for the agritourism community
Californians and California tourists love to get out of town to enjoy rural beauty and experience a taste of rural life. This often includes visiting California's many farms and ranches that offer farm tours, farm stays, workshops, festivals, dinners,...