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.
Got milkweed? Then you probably have milkweed bugs. All summer and into fall, we spotted the familiar reddish, black and white bugs scurrying around on our showy milkweed, Asclepias speciosa, and tropical milkweed, Asclepias curassavica. Showy bugs on...
How can we help honey bees through research? That's the topic that Francis Ratnieks, professor of apiculture, University of Sussex, United Kingdom, will cover when he presents a seminar on Wednesday, Dec. 7 at the University of California, Davis. He'll...
So you're in a quandary. You have no idea what to get the nature lovers/insect enthusiasts on your holiday gift-giving list. It's buggin' ya. No worries. The UC Davis Entomology Graduate Students' Association (EGSA) to the rescue. Every year EGSA...
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
Migrating bats may be resting, not sick, says UC bat expert
Posted 11/10/2016 - California is in the middle of the Pacific Flyway, a major north-south flyway for migratory birds, and also bats, that extends from Alaska to South America. “Every autumn, migratory bats, such as the Mexican free-tailed bats, travel to their...
With conservation agriculture, Firebaugh farmers use half the nitrogen and a third less water
Posted 11/3/2016 - How do you cut your water use by a third, cut your nitrogen use in half, maintain your tomato yield and improve your fruit quality? “With patience, perseverance and by treating your soil like a living ecosystem — which it is,”...
Planet-friendly orchard recycling makes money sense
Posted 10/20/2016 - The numbers are beginning to trickle in confirming UC Cooperative Extension advisor Brent Holtz' hunch. Chipping and returning expired almond orchards into the soil where they grew is not only environmentally sound, it is economically...
Women learn to burn and lead in fire management in Northern California Oct. 19-28
Posted 10/17/2016 - Workshop aims to spark women's ambition to become leaders in fire management Shortly after her son was born, Jeanne Pincha-Tulley was promoted to fire chief of a national forest. For the first six months, she brought the baby to work. “Most of...
Lighting up a new path: the Women-in-Fire Rx Fire Training Exchange (WTREX)
Posted 10/13/2016 - On Monday, Oct. 17, participants will gather in northwestern California for the first-ever Women-in-Fire Prescribed Fire Training Exchange (WTREX). The 12-day hands-on prescribed fire training, modeled after similar TREX events that take place across...