Cooperative Extension San Joaquin County
University of California
Cooperative Extension San Joaquin County

UC Cooperative Extension

Cleaning Up Wildfire Ash Safely

You can avoid many health hazards from wildfire ash following these tips from California Department of Public Health, found online here

or you can download and print this flier Cleaning Up Wildfire Ash Safely CDPH 7 Aug 2018


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

In Search of the Perfect Entomological Gift

Bohart associate Emma Cluff cuddles a tardigrade, one of the stuffed animals available for sale in the Bohart Museum of Entomology's gift shop. (Photo by Kathy Keatley Garvey)

If you're looking for the perfect "bugly" entomological gift, be sure to stop by the Bohart Museum of Entomology, University of California, Davis. The Bohart Museum, located in Room 1124 of the Academic Surge Building on Crocker Lane,  is open to...

Posted on Thursday, December 13, 2018 at 3:52 PM

Jessica Gillung's Research on Spider Flies: A Tale of Conflict and Uncertainty

Professor Thomas Pape of the Natural History Museum of Denmark and chair of the Council for the International Congresses of Dipterology, presents the top student prize to Jessica Gillung. The next Congress takes place in 2022 in California

When UC Davis doctoral candidate Jessica Gillung, who studies the parasitoid flies commonly known as spider flies, presents her exit seminar on Friday, Dec. 14, it's bound to draw widespread interest. Her research already has. She just won the prize...

A Timely Topic and None Too Soon: The Troubling State of Pollinators

A yellow-faced bumble bee, Bombus  Bombus vosnesenskii, foraging on a tower of jewels (Echium wildpretii) in Vacaville, Calif. (Photo by Kathy Keatley Garvey)

What a timely topic--and none too soon! And the University of California, Davis, is a major part of it. Next July: a major occurrence in the world of pollinators: UC Davis will host the seventh annual International Pollinator Conference, a four-day...

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

Landowners at a UCCE prescribed fire training are 'holding' the fire on the left side of the fire line that was cut using rakes and other hand tools. The landowner on the far left is firing the burn unit with a drip torch. (Photo: Ames Gilbert) Can rakes save forests? Yes, as long as you have a drip torch in the other hand
Posted 12/11/2018 - The humble rake has been in the spotlight in recent weeks, and its role as a forest management tool ridiculed and scorned. However, most fire professionals believe rakes are a necessary part of saving California's forests. Those who are familiar with...

Yellow and black mud dauber wasps are predators of spiders but harmless to people. Adults are about 1-inch in length with true wasp waists! Why mud daubers are on spider patrol
Posted 12/4/2018 - UC Cooperative Extension advisors are on the front line and get the most interesting questions from our community. Someone brought some wasps into our office, and was worried they were invading her home, and wondered how to get rid of them. They were...

Organic farmer Phil Foster stands in front of a field with cover crops planted in strips at the top of the planting bed. Organic farmers and researchers strive to advance soil care
Posted 11/26/2018 - Organic farmer Phil Foster has developed a creative way to nurture the soil on his 200-acre farm near Hollister. He plants cover crops in a single line at the top of the planting bed, saving water and seed while keeping the furrows clear for...

The Camp Fire in Butte County on Nov. 8, 2018. (Photo: NASA) Catastrophic wildfires and climate change lead to growing acceptance of ‘pyrosilviculture’
Posted 11/15/2018 - For millennia, fires periodically burned through California forests, thinning trees, reducing shrubbery and clearing out downed branches and debris. Without periodic fire, the forests became more dense, with spaces between large trees filling in with a...

California water travels from the high-mountain headwaters of the Sierra Nevada to the vast groundwater basins in the valleys below. Communication is key to action on California’s new water narrative
Posted 11/1/2018 - UC scientists, students and water agency professionals took a critical look inwards and a radical look outwards when they gathered in Sacramento in October to reimagine California water. The event was the fourth annual gathering sponsored by UC ANR's...

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