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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

A Royal Moment with a Queen Bumble Bee

A queen bumble bee, Bombus vosnesenskii, nectaring on Salvia indigo spires in Kate Frey's pollinator garden on Nov. 12, 2017 at the Sonoma Cornerstone.  (Photo by Kathy Keatley Garvey)

It's Thanksgiving Day and time to give thanks for NOT what we WANT, but what we HAVE. And, not for what we OWN, but what we CANNOT. That includes the yellow-faced bumble bee, Bombus vosnesenskii. On the morning of Nov. 12, we traveled to the Sonoma...

Posted on Thursday, November 23, 2017 at 2:00 AM

Special Day for the Parasitoids and Walking Sticks

UC Davis doctoral candidate Jessica Gillung shows a stick insect to brothers Elliott Bren, 12 (foreground) and Liam Breen, 14. (Photo by Kathy Keatley Garvey)

American biologist, researcher, theorist, naturalist and author E.O. Wilson once said: "(We have) reason to cherish each species in turn as a world unto itself, worthy of lifetimes of study." That includes parasitoids. "Parasitoid Palooza!" That was...

Posted on Wednesday, November 22, 2017 at 3:00 PM

Bohart Museum Visitors: As Close as Davis and as Far Away as San Jose

Bohart associate and butterfly expert Greg Kareofelas talks to Sacramento residents Amii Barnhard-Bahn and her daughter, Larkin, 15. (Photo by Kathy Keatley Garvey)

When there's a Bohart Museum of Entomology open house, visitors come to listen, learn and explore. Such was the case during the Parasitoid Palooza open house last Saturday, Nov. 18 when area residents, including parents and their children, and...

Posted on Tuesday, November 21, 2017 at 12:00 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

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UC Blogs

In a new series of videos, a cow puppet provides advice for hikers from UC Cooperative Extension on sharing open space with livestock. Videos show hikers how to avoid Black Friday stampedes on park trails
Posted 11/17/2017 - While Americans traditionally beat a path to the malls the day after Thanksgiving, many opt out of shopping on Black Friday to enjoy the outdoors. In regional parks and other open spaces, hikers may encounter crowds of a different sort – cattle...

Barn owl adult, photo by G. Rohman, grohman@gmail.com Barn owls help clean up rodents naturally
Posted 11/13/2017 - The screech of a barn owl at night may be startling or annoying to some. But others may find their harsh calls satisfying, knowing that barn owls are out, feeding on pesky rodents. They're fierce hunters with a voracious appetite for mice, voles,...

Participants gather around the first soil pit of the field tour, as Toby O'Geen provides a brief natural history of the land. Digging Deep: Exploring the diversity of soils in the Sacramento Valley
Posted 10/30/2017 - Not more than three months on the job and Konrad Mathesius is hard at work bringing farmers together to discuss the unique challenges that Sacramento Valley farmers face. As the new UCCE agronomy advisor for Sacramento, Solano and Yolo counties, his...

Cannabis grows near a salmon stream Humboldt. Diverting water to irrigate cannabis can dewater streams during the summer and impact wildlife. Cannabis crop expansion into forests threatens wildlife habitat
Posted 10/30/2017 - Planting cannabis for commercial production in remote locations is creating forest fragmentation, stream modification, soil erosion and landslides. Without land-use policies to limit its environmental footprint, the impacts of cannabis farming could...

Dead trees can be seen in the foreground and on the distant mountain side. (Click on photos for higher resolution.) Replanting the Sierra Nevada after an ecological catastrophe
Posted 10/25/2017 - Given California's changing climate, should Sierra Nevada residents replant pine trees after so many died during the 2010-2016 drought? The short answer is yes, says Susie Kocher, UC Cooperative Extension forestry advisor. “We have every reason to...

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