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.
So you have this significant garden pest--a caterpillar eating your cabbage, lettuce, tomato, squash, geraniums and petunias--and more. And then one morning you see a moth on your blanket flower (Gaillardia). Hmm... What is it? The moth (below) is...
It's bugged. Yes, bugged. And you won't want to miss it. If you head over to the 69th annual Solano County Fair, 900 Fairgrounds Drive, Vallejo, between now and Sunday, July 31, you'll see lots of bees, butterflies, lady beetles, dragonflies,...
Sometimes caregivers, including grandparents, aunts, uncles, cousins and neighbors, take photos of babies to show "proof of life." They post them for the parents to see, admire and confirm. It's delightful to see images of your offspring while you're on...
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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
Hmong farmers getting help from UC Cooperative Extension to weather the drought
Posted 7/25/2016 - After the Central Valley Hmong Agriculture radio show last week, the phones at the UC Cooperative Extension office in Fresno County were buzzing non-stop with farmers anxious to apply for state grants to improve irrigation systems and energy efficiency....
Lessons from six California soil care farmers
Posted 7/21/2016 - Despite the growing interest in soil health in many parts of the country, the notion hasn't captured the imagination of most farmers in California. The Golden State's lackluster attention to soil care is likely due to “phenomenal yield increases...
A moth's night out: Celebrate moths at Bohart Museum
Posted 7/19/2016 - If you're the kind of person who deliberately allows cobwebs or spider webs to grace your porch light, you may be the curious type - or have a little bit of entomologist in you. Like a moth to a flame? Yes, and you can learn more about moths at the...
Organic symposium proceedings now available
Posted 7/18/2016 - Summaries of presentations from the 2016 Organic Agriculture Research Symposium (OARS) held in Pacific Grove are now available online at http://eorganic.info/node/16778. Many of the workshops and keynote presentations were recorded live and may be viewed...
IPM information extends to apple and peach growers in Guatemala
Posted 7/8/2016 - Did you know that apples and peaches are two important fruit crops planted in the highlands of Guatemala? More than 7,600 acres of apples and 6,100 acres of peaches are grown. However, with warm winters that don't allow for the winter chilling time that...