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

UC Cooperative Extension

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

A Lady Beetle and Gulf Fritillary Caterpillars

Lady beetle, aka ladybug, with its new

What's this?   A lady beetle, aka ladybug, sharing stories with Gulf Fritillary caterpillars?   Well, not likely.   The lady beetle (family Coccinellidae) preys mainly on aphids--it can eat about 50 aphids a day or some 5000 aphids...

Posted on Friday, August 29, 2014 at 4:29 PM

The Cactus Climber

Praying mantis, perfectly camouflaged, stops in the midpoint of his climb. (Photo by Kathy Keatley Garvey)

He's a survivor. His sisters and brothers didn't eat him when he emerged from the egg case. In fact, he probably ate some of his brothers and sisters. He has managed to elude his predators: bats, birds and spiders. Yes, our praying mantis is very much...

Posted on Thursday, August 28, 2014 at 9:18 PM

Eric Mussen to Keynote WAS Conference

Eric Mussen, who retired this summer as Extension apiculturist, will be the keynote speaker on Thursday, Sept. 18 at the Western Apicultural Society conference at the University of Montana. (Photo by Kathy Keatley Garvey)

Honey bee guru Eric Mussen is retired but the "R" word isn't stopping him. Mussen, who served 38 years as California's Extension apiculturist, based at the UC Davis Department of Entomology and Nematology, has changed the "R" word into a "K" word. "K"...

Posted on Wednesday, August 27, 2014 at 9:12 PM

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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

UC Blogs

Cattle need special care in times of drought. Tips for cattle health and safety during dry times
Posted 8/26/2014 - Long before Governor Brown declared an official drought for the state, many of California's ranchers knew this would be a tough year. Drought can increase the risks of animal poisonings and nutritional imbalances, and necessitate additional vigilance to...

UCCE fills the need for the latest fire science in joint program. UCCE leads Northern California Fire Science Consortium
Posted 8/21/2014 - Fire is the focus of increasing attention and interest in California and throughout the country. However, the interpretation and application of science remains a challenge, and fire scientists and managers often find themselves in separate spheres, with...

With integrated pest management, school yards are healthier environments for children. A healthy start back to school
Posted 8/20/2014 - As summer is quickly coming to a close, and most kids have already headed back to school or will be returning in the next couple of weeks, integrated pest management will be an expected and important tool for the upcoming school year. Classrooms,...

The 70-year-old Shasta Dam forms the largest reservoir in California. $7.12 billion state water bond to appear on November ballot
Posted 8/18/2014 - The Water Quality, Supply, and Infrastructure Improvement Act of 2014 (Proposition 1) is set to appear on the November 2014 ballot. If approved by voters, it would “authorize $7.12 billion in general obligation bonds for state water supply...

Yellow Flag Iris, Iris Pseudocaris, is a fast-growing and spreading invasive plant found in wetlands, streams and riverbanks. It is known to outcompete native plants and reduces habitats for waterfowl and fish. Photo credit: Joe DiTomaso 15 simple ways to participate in California Invasive Species Action Week, Aug. 2 - 10
Posted 8/1/2014 - Help the California Department of Fish and Wildlife celebrate their first annual California Invasive Species Action Week, Aug. 2 – 10, and protect California's diverse landscapes. Hundreds of invasive plants and animals have already established...

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