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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

Bring Back the Monarchs!

Backlit, the monarch resembles a stained glass window as it touches down on a Mexican sunflower (Tithonia). (Photo by Kathy Keatley Garvey)

When a monarch butterfly comes fluttering through your yard, grab your camera. Marvel at it beauty, celebrate its presence, and keep it in your memory. It may be become an endangered species the way things are going. The Xerces Society for Invertebrate...

Posted on Wednesday, September 17, 2014 at 5:28 AM

A Close Call

Art Shapiro saw 19 of this species, Pieris rapae, or cabbage white, today at his North Sacramento study site. (Photo by Kathy Keatley Garvey)

Butterfly expert Art Shapiro, distinguished professor of evolution and ecology at UC Davis, isn't feeling so well--to put it mildly--but he still went out on one of his butterfly monitoring expeditions today at his study site in North Sacramento. He...

Posted on Tuesday, September 16, 2014 at 9:19 PM

Do You Have a Little Land to Spare for the Bee Buffer Project?

Honey bee on a California golden poppy. (Photo by Kathy Keatley Garvey)

Do you have a little land to spare, such as a quarter of an acre or up to three acres? For honey bee habitat? The Pollinator Partnership, as part of its U.S. Bee Buffer Project, wants to partner with California farmers, ranchers, foresters, and managers...

Posted on Monday, September 15, 2014 at 5:44 PM

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

Desert tortoises are well camouflaged in the California desert. Saving the Mojave desert tortoise
Posted 9/16/2014 - Saving the declining populations of Mojave desert tortoise is a big challenge. But scientists think that raising newborn “hatchling” tortoises in a controlled environment in the Mojave National Preserve for a year, then releasing the...

Visitors tour a farm in the Sacramento Delta region during pear harvest season. Farmers invite visitors with new farm trail maps
Posted 9/8/2014 - The Sacramento River Delta Grown Agritourism Association map brochure invites, “Drive along winding rivers and sloughs in the heart of the California Delta; Visit quaint historic towns, shop at rustic farm stands or pick your own fresh fruit and...

Clear Lake hitch spawning in Adobe Creek. (Photo: Richard Macedo, California Department of Fish and Wildlife) The Clear Lake hitch get new protection
Posted 9/4/2014 - The Clear Lake hitch, a large minnow found only in Clear Lake and its tributaries, was designated a “threatened species” last month under California's Endangered Species Act. Introduced predatory and competitive fish species and low water...

Drought-impacted annual rangeland near Oakdale, Calif. (Photo: Holly George) Looking ahead: Post drought rangeland management
Posted 9/3/2014 - "Drought and taxes have a lot in common. They are both facts of life that must be dealt with periodically, they are both pains in the neck, and they both carry serious consequences if we choose to ignore them." - Jeff Mosley, Extension Range Management...

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...

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