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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

AsianCitrusPsyllid1
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

Feel the Buzz: Want to Become a Master Beekeeper?

Find the queen? This photo was taken in the apiary of Jackie Park-Burris Queens, Palo Cedro. (Photo by Kathy Keatley Garvey)

Want to feel the buzz? If you're a beekeeper and have kept bees for at least a year, you might want to become a Master Beekeeper. The E. L. Niño Bee Lab, directed by Extension Apiculturist Elina Lastro Niño, University of California,...

Posted on Friday, May 27, 2016 at 3:54 PM

Christine Merlin: Why Those Monarchs Migrate When They Do

Texas A&M University biologist Christine Merlin examines a monarch. (Photo courtesy of Texas A&M University)

From her post at Texas A&M University, located at College Station, 90 miles northwest of Houston, Christine Merlin basically has a front-row seat for the monarch butterfly migration. She sees them heading to Mexico to overwinter, and she sees them...

Posted on Thursday, May 26, 2016 at 3:54 PM

No Sweat? Yes, Sweat!

Sweat bees from the genus  Lasioglossum on an Iceland poppy. This image was taken with a NIkon D800 with a 60mm macro lens. (Photo by Kathy Keatley Garvey)

Ever seen a mob of tiny sweat bees? The bees below, from the genus Lasioglossum  (as identified by native pollinator specialist Robbin Thorp, distinguished emeritus professor of entomology at the University of California, Davis), just about...

Posted on Wednesday, May 25, 2016 at 5:13 PM

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Director:
Brent A Holtz Ph.D.

1040

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
e-mail: cesanjoaquin@ucdavis.edu
Click here for a map

Ag Center May 2008

UC Blogs

A center-pivot system irrigates small grain winter forage and summer silage corn production in Denair. (Photo: Jeff Mitchell) Researchers see more overhead irrigation in California’s future
Posted 5/26/2016 - Overhead irrigation systems have revolutionized agriculture across the United States and in other parts of the world, using less water than furrow irrigation and requiring significantly less labor and maintenance than drip systems. But in California, the...

From Cows to Concrete: The Rise and Fall of Farming in Los Angeles New book traces Los Angeles’ transformation from cows to concrete
Posted 5/13/2016 - After thousands of years as a sparsely populated coastal plain, the Los Angeles Basin underwent two dramatic transformations in the last century and a half, first into an agricultural powerhouse and then into mile upon mile of wall-to-wall American dream...

Fire consumes a dense chaparral research plot at UC Hopland Research and Extension Center. (Photo: Evett Kilmartin) Fire devoured chaparral plots at UC facility to set up a research project
Posted 5/5/2016 - Firefighters set two hillsides ablaze at the UC Hopland Research and Extension Center (HREC) in April, sending flames 50 feet into the air while dense, chest-high chaparral was reduced to a moonscape – all in the name of science. The prescribed...

An unprotected agricultural worker spraying pesticide. IPM and pesticide safety a desperate need in Myanmar
Posted 5/5/2016 - Myanmar (formerly Burma) is located in Southeast Asia, bordered by Bangladesh, India, China, Laos and Thailand. I was asked by the United States Agency for International Development (U.S. AID) to travel to Myanmar to use my training and experience as an...

Soil is an often overlooked tool to fight drought. Fighting drought with soil
Posted 5/2/2016 - A team of University of California scientists recently received a $1.69 million grant to use several UC agricultural research stations to study an often overlooked tool to fight the drought: soil. The team, led by Samantha Ying, an assistant professor...

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