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

Why You Should Bee-Coming to the California Honey Festival

Extension apiculturist Elina Lastro Niño (left) demonstrates how to open a hive to a UC Davis summer camp. She'll be giving three live bee demonstrations at the California Honey Bee Festival: the first at 11:15, then 1 p.m. and the third at 3:45 in the bee tent. (Photo by Kathy Keatley Garvey)

Here's why you should bee-coming to the second annual California Honey Festival, set from 10 a.m. to 5 p.m., Saturday, May 5 in downtown Woodland. Think fun, food, friends, family, and free. The honey-of-an-event--attendance is free--promises to be...

UC Davis Symposium to Target Zika, West Nile and Other Vector-Borne Diseases

This is Aedes aegypti, also known as

They'll target Zika, West Nile, Chikungunya and other vector-borne diseases. The annual UC Davis Research Symposium on the Designated Emphasis in the Biology of Vector-Borne Diseases (DEBVPD) takes place from 3 to 8 p.m., Thursday, May 3 in the Putah...

In the News: Hammock and Zhang Labs Target Obesity-Enhanced Colon Cancer

Bruce Hammock is a UC Davis distinguished professor of entomology with a joint appointment at the UC Davis Comprehensive Cancer Center. (Photo by Kathy Keatley Garvey)

Bruce Hammock, a distinguished professor of entomology with the UC Davis Department of Entomology and Nematology who holds a joint appointment with the UC Davis Comprehensive Cancer Center, kept busy today--along with his colleagues--answering news media...

Posted on Monday, April 30, 2018 at 7:53 PM
Focus Area Tags: Health Innovation

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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

Kate Wilkin inspects a ponderosa pine on her property with an old fire scar, undeniable evidence that fire has swept through her neighborhood in the past. Newly minted UC fire scientist Kate Wilkin moves into fire country
Posted 1/16/2018 - Fire scientist Kate Wilkin was on the job just a few weeks when ferocious winds whipped up the Northern California firestorm of 2017. The national media focused on Napa and Sonoma counties, where the deadly Tubbs fire became the most destructive...

UCCE advisor Ruth Dahlquist-Willard (right) demonstrates how to evaluate soil moisture with a soil sampler. In the center is UCCE Hmong ag assistant Michael Yang. UCCE works with CDFA to help Hmong farmers conserve water and reduce emissions
Posted 1/11/2018 - California farmers Fong Tchieng and Vang C. Thao have a lot in common. They both have farming operations in the Central Valley. They both belong to the state's vibrant – and growing – Hmong farming community. And most importantly, they have...

Green Gardener training participants conduct a sprinkler test. San Joaquin County gardeners boost business with UC Cooperative Extension Green Gardener qualification
Posted 1/8/2018 - For a healthier family and environment, San Joaquin County homeowners can select a UC-qualified Green Gardener to take care of their lawns and landscapes. Green Gardeners are landscape professionals who are trained and tested on up-to-date,...

California is the top almond producer in the world, accounting for about 80% of all almonds grown. (Photo: Jack Kelly Clark) Almond and Walnut Pest Management Guidelines revised just in time for the holidays
Posted 12/19/2017 - ‘Tis the season for baking lots of tasty treats. Breads, cookies, cakes, and candy are just a few that come to mind. What makes many of these treats so tasty is the addition of almonds or walnuts to the list of ingredients. In California, we are...

National Forest Foundation conducts California Naturalist courses in conjunction with young adult leadership development programs, which enhances seasonal work assignments as interpreters and stewards with the US Forest Service in Southern California. Expanding access to the California Naturalist community
Posted 12/12/2017 - Since the inception of the California Naturalist program in 2012, we have been committed to embracing inclusion in all its forms and creating an open, diverse, and equitable community. It is embedded in our mission to foster a diverse community of...

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