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

Lynn Dicks: The Importance of People in Pollinator Conservation

Keynote speaker Lynn Dicks (far left) of the School of Biological Sciences, University of East Anglia, United Kingdom, with conference co-chair Neal Williams, pollination ecologist, UC Davis Department of Entomology and Nematology, and speaker Rachel Vannette of the UC Davis Department of Entomology and Nematology, who addressed the crowd on her hummingbird research. (Photo by Kathy Keatley Garvey)

The global decline of pollinators ought to concern everybody, and everybody ought to get involved, said bee conservation researcher Lynn Dicks of the School of Biological Sciences, University of East Anglia, United Kingdom, in her keynote address at the...

Posted on Tuesday, July 23, 2019 at 2:20 PM
Focus Area Tags: Agriculture,Economic Development,Environment,Innovation,Natural Resources,Pest Management,Yard & Garden

If You Were a Bug, What Would You Be?

The California State Fair's Insect Pavilion is home to multiple displays borrowed from the Bohart Museum of Entomology, UC Davis. (Photo by Kathy Keatley Garvey)

"If you were a bug, what would you be?" That sign greets visitors to the California State Fair's Insect Pavilion. It's a good conservation starter. The Insect Pavilion showcases insect specimens and insects from the Bohart Museum of Entomology at the...

Posted on Monday, July 22, 2019 at 4:31 PM
Focus Area Tags: Agriculture,Economic Development,Environment,Family,Food,Health,Innovation,Natural Resources,Pest Management,Yard & Garden

Exciting Research on Nematodes Published

UC Davis plant nematologist Shahid Siddique (Photo by Kathy Keatley Garvey)

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...

Posted on Friday, July 19, 2019 at 7:02 PM
Focus Area Tags: Agriculture,Economic Development,Environment,Health,Innovation,Pest Management

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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

Ag Center May 2008


Event Name

UC Blogs

Non-native Bromus species, such as ripgut brome, grow fast and dry out quickly, becoming highly flammable. California’s bad romance with Bromus fuels wildfire
When wildfires burn in California, people often call them forest fires or brushfires, but the odds are high that an invasive weed is an unrecognized fuels component, says a UC Agriculture and Natural Resources scientist. “We have all of the...

Cannabis grows in Siskiyou County as seen from Google Earth. Research has shown that illegal cannabis production causes environmental damage. 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...

Master Gardener looking through a hand lens to identify a pest problem on plant leaves. (Photo: Marcy Sousa, UCCE San Joaquin) 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...

The yellow-faced bumble bee (shown on foxglove), native to the west coast of North America, is an important pollinator. Photo by Kathy Keatley Garvey 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...

Hummingbirds, along with other birds, bats and insects, are pollinators. 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...

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