Weed Science
The Weed Science program, based out of the University of California Cooperative Extension- Napa County office, holds a wealth of weed related information and is a must visit if you are looking to learn more about control tactics or identification. You can also find some important links below:
UC Weed Science Blog
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ANNOUNCEMENT :: 2021 Rice Growers Meeting
Mark your calendar... UC COOPERATIVE EXTENSION presents 2021 Rice Growers Meeting When: February 11, 2021|9:00 AM-12:00 PM Where: Virtual via Zoom Cost: $10 Click here to...
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Will rising temperatures make superweeds even stronger?
Will Rising Temperatures Make Superweeds Even Stronger? Widely used herbicides are struggling to kill some weeds. Some experts think heat could be part of the problem. From the digital magazine,...
Weed Resources
- Weed Research & Information Center (UC WeedRIC)
- Weed ID Tool
- Cal-IPC: California Invasive Plant Council
- Herbicide Symptoms - UC IPM
- Western Society of Weed Science
- Weed Science Society of America
- California Weed Science Society
- California Department of Pesticide Regulation
- California Department of Food and Agriculture Integrated Pest Control (IPC)

John A Roncoroni
Title: Weed Science Farm Advisor, Emeritus
Specialty: Weed Control and Vegetation Management in Perennial Crops, Covercrops and Aquatic Weed Control
Address:
UC Cooperative Extension
1710 Soscol Avenue
Suite 4
Napa, CA 94559-1315
Phone: 707-253-4221
Email: jaroncoroni@ucanr.edu
Title: Weed Science Farm Advisor, Emeritus
Specialty: Weed Control and Vegetation Management in Perennial Crops, Covercrops and Aquatic Weed Control
Address:
UC Cooperative Extension
1710 Soscol Avenue
Suite 4
Napa, CA 94559-1315
Phone: 707-253-4221
Email: jaroncoroni@ucanr.edu
UC Weed Science Twitter Feed

@WyoWeeds @tedlieu Congressman Lieu, I’d be glad to visit with you if you have an interest in weed management trade… https://t.co/3MBsJMRVr1 Posted 589 days ago

@LynnSosnoskie Weed dispersal (California burclover if you’re keeping score at home) https://t.co/YFJVfzts8n Posted 594 days ago