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.
It was an unexpected find, but it was right on time. Art Shapiro, distinguished professor of evolution and ecology at the University of California, Davis, figured it was too rainy and too cold to head over to West Sacramento to look for the first...
It's a moth like no other. Did you read the abstract published Jan. 17 in the journal ZooKeys about the newly discovered and named moth, Neopalpa donaldtrumpi? No? Well, you probably read the news story. It went viral. Somewhat overlooked was the role...
Think of the ABCs: almonds, blueberries and cherries. Then think of watermelons and pumpkins. All those crops will be discussed in a series of free webinars on Ensuring Crop Pollination in U.S. Specialty Crops, set Jan. 24 through March 28. The...
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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
A foreboding fungus is threatening orchards in the San Joaquin Valley
Posted 1/17/2017 - When an almond tree keels over in a mature orchard, it could be a sign of something ominous. UC scientists are tracking a fungal infection in San Joaquin Valley almond trees that can cost farmers hundreds of thousands of dollars in lost...
In a new study biochar helps yields, but only in the short term
Posted 1/11/2017 - Adding biochar to a farm's field is an irreversible decision, so understanding its long-term impacts is essential for farmers to make informed decisions. Biochar, a charcoal created from organic materials burned at high temperatures and added as a soil...
Grass-fed beef production a possible money-maker for Central California ranchers
Posted 12/19/2016 - The health benefits of grass-fed beef are well documented. Meat from cattle that live out their lives grazing on rangeland before being processed has more beta-carotene, vitamin E and omega-3 fatty acids than the meat from animals finished at feed...
Weather radar helps researchers track bird flu
Posted 12/7/2016 - The same weather radar technology used to predict rain is now giving UC researchers the ability to track wild birds that could carry the avian influenza virus. Avian influenza, which kills chickens, turkeys and other birds, can take a significant...
Wild horse over-population is causing environmental damage
Posted 12/6/2016 - Most Americans envision healthy mustangs galloping free on the range when they think about the country's wild horse population. But UC Cooperative Extension rangeland advisor Laura Snell sees another image. In conducting research on the over-populated...