UC Cooperative Extension
ACP (Asian citrus psyllid) found in San Joaquin county
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.
They didn't get the memo. A sign on a recycling bin near the Mann Laboratory at the University of California, Davis, clearly reads "Bottles and Cans Only." It says nothing about wasps. But there they were: European paper wasps (Polistes dominula)...
Let's celebrate National Pollinator Week. And what better time for the UC Davis Department of Entomology and Nematology to host an open house than during National Pollinator Week? It's from 11 a.m. to 2 p.m., Saturday, June 23 at its bee...
Consider the lovestruck praying mantis. If you've ever watched a mating pair of mantids and seen the male lose his head, or seen other insect mating rituals, then you ought to read entomologist Emily Bick's review of the play, An Entomologist's Love...
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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
Reduce food waste to combat world hunger and slow global climate change
Posted 6/13/2018 - One-third of the world's food is spoiled or tossed rather than eaten, a fact that is tragic when nearly one billion people go hungry. The injustice of food waste is worsened by the fact that food decomposing in landfills emits greenhouse gases that...
National Pollinator Week: Open house at UC Davis Bee Garden
Posted 6/12/2018 - June 18-24 is National Pollinator Week. Do you know where your pollinators are? Think bees, birds, butterflies, bats and beetles. And think flies. Especially syrphid flies, also known as "flower flies" and "hover flies." The UC Davis Department...
UC Cooperative Extension farm advisors launch “Growing the Valley” podcast
Posted 6/6/2018 - A new UC Cooperative Extension podcast that focuses on growing orchard crops in the San Joaquin and Sacramento valleys is now available free at http://growingthevalleypodcast.com, Apple iTunes and Google Play Music. The hosts are Phoebe Gordon,...
During California Invasive Species Action Week, learn about invasive species
Posted 6/4/2018 - Californians can help in the fight against invasive species by learning and participating during California Invasive Species Action Week, June 2–10. During the week, the UC Statewide Integrated Pest Management Program invites the public...
Radiant daisy-like sunflowers produce a valuable crop with little water
Posted 6/1/2018 - Sweeping acres of striking golden flowers may soon grace California's desert southwest. UC Cooperative Extension irrigation specialist Khaled Bali believes sunflowers may be an ideal crop for the state's most punishing agricultural region. California...