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.
If you read The Plant Journal today, you may have noticed the exciting research published on nematodes. And it has a University of California, Davis, connection. An international team of 10 scientists, led by plant nematologist Shahid Siddique, a...
With a buzz here and a buzz there, the 4th International Pollinator Conference, hosted by the University of California, Davis, is underway. The conference, themed "Multidimensional Solutions to Current and Future Threats to Pollinator Health," opened...
It's all about the pollinators--whether they be bumble bees, longhorned bees, squash bees, sweat bees, honey bees or hummingbirds. Yes, hummingbirds are pollinators, too! A capacity crowd of 250 will attend the fourth International Pollinator...
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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
Cannabis growers asked to comment on permit process
California has legalized marijuana, but commercial cannabis growers have been slow to obtain the required state and local permits. To find out what deters them from complying with new laws, University of California scientists are asking cannabis...
UC IPM is celebrating 40 years
The University of California Statewide Integrated Pest Management Program (UC IPM) is celebrating its 40th anniversary. Established July 1, 1979, with funding from the California Legislature, UC IPM built upon a growing movement to reduce dependence on...
We depend on pollinators
Happy Pollinator Week! For 2019, it's June 17-23. Most people think of bees when they think pollination, but don't stop there. “Think the "b" alliteration: bees, birds, butterflies, bats and beetles. But don't forget the flies, ants, mosquitoes...
California Naturalists' efforts benefit pollinators
'Attention is the beginning of devotion' --Mary Oliver This quote resonates this month, amidst a variety of environmental holidays and celebrations including World Environment Day, World Ocean Day, California Invasive Species Action Week, and finally...
UC helps California dairy farmers experiment with milking robots
Early in the 20th century, dairy operators traded their milking stools for machines to produce enough dairy products to meet growing consumer demand. The technological developments were critical to the formation of California's enormous dairy industry,...