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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 Aren't There More Women in Beekeeping?

When it comes to gender, most beekeepers are males. In national beekeeping groups women represent less than a third of leadership positions, according to the Bee Culture magazine. (Photo by Kathy Keatley Garvey)

Why aren't there more women in beekeeping? According to the U.S. Department of Agriculture, 31 percent of all American farmers are women, contributing $12.9 billion to the agricultural economy, says Amina Harris, director of the UC Davis Honey and...

A Spotlight on Nematodes

UC Davis diagnostic parasitologist Lauren Camp wears a papier mache nematode hat, modeled after a hookworm mouth. At left is nematologist Chris Pagan, a graduate student in entomology. (Photo by Kathy Keatley Garvey)

Quick question: What was diagnostic parasitologist Lauren Camp of the UC Davis Veterinary Medical Teaching Hospital wearing on her head as she talked about the nematode collection last Saturday at the seventh annual UC Davis Biodiversity Museum...

Heaven in the Bee Haven

A young girl searches for bees amid the blossoms of the California native plant,  Brandegee's sage (Salvia brandegeei) (Photo by Kathy Keatley Garvey)

It was heaven in the bee haven. As temperatures climbed into the seventies last Saturday, honey bees foraged in the California native plant, Brandegee's sage (Salvia brandegeei). and pollinated the almond blossoms. It seemed like spring. Nearly 600...

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

UC Blogs

UCCE rangeland advisor meets with ranchers in the field to discuss rangeland management decisions. UCCE to be a leader in climate change awareness and education
Posted 2/21/2018 - Although individual extreme weather events cannot yet be reliably linked to global climate change, the warming planet may be contributing to recent weather disasters in California. Across the state, 129 million trees died as a result of the drought of...

The native California shrub toyon, or Christmas berry, blooms with white flowers in a hedgerow planted behind Rachael Long and a tomato grower. Good news for hedgerows: No effects on food safety in the field
Posted 2/15/2018 - Hedgerows enhance wildlife abundance and diversity around farmland without contributing to food safety problems in field crops, according to a new study published by a team of University of California researchers. The UC Agriculture and Natural...

UC Cooperative Extension alfalfa specialist Dan Putnam wrote the drought tip 'Drought strategies for alfalfa,' on which the first video in the series is based. The video is on the the UCTV Sustainable California channel, UC launches drought video series Feb. 2
Posted 2/2/2018 - Because periodic droughts will always be a part of life in California, the UC California Institute for Water Resources (CIWR) produced a series of videos to maintain drought awareness and planning, even in years when water is more abundant. The first of...

Integrated hydrologic science professor Helen Dahlke in an almond orchard being flooded for groundwater recharge. Flooding alfalfa fields has high potential for groundwater recharge
Posted 1/19/2018 - A rigorous field study in two California climate zones has found that alfalfa can tolerate very heavy winter flooding for groundwater recharge. The research was published online Jan. 16 in California Agriculture journal. The alfalfa research is the...

Glenda Humiston, vice president of UC Agriculture and Natural Resources, said research is a fundamental component of the fight against damaging invasive species. Ag leaders, scientists set priorities to prevent invasive pest threats to the environment and economy
Posted 1/18/2018 - The gypsy moth, an interloper from Europe and Asia, is threatening California's majestic oaks in Ventura County. Invasive desert knapweed, which comes from Africa, has made its first North American appearance in in California's Anza-Borrego Desert,...

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