University of California Rice On-line
University of California Rice On-line
University of California Rice On-line
University of California
University of California Rice On-line



University of California Rice On-line is an interdisciplinary team consisting of UC Cooperative Extension specialists, faculty and farm advisors dedicated to providing rice growers with up-to-date guidelines and information on rice production in California.

Rice growing area
 (lightest green) within California counties where rice is produced (darkest green). Rice variety yield trial locations are indicated (red pins). 

Information about UC Rice Variety Trials

Click or tap red pins to view variety trial data for each location

Locations of UC California rice variety yield trials Yolo rice variety trial location Yuba rice variety trial location Sutter I/L rice variety trial location Sutter VE rice variety trial location Colusa rice variety trial location Butte rice variety trial location South Butte rice variety trial location Rice Exp. Station rice variety trial location Glenn rice variety trial location San Joaquin variety trial location South Yolo variety trial location

Base image courtesy of the California Rice Commission

Upcoming Meetings & Events


Rice Production Workshop

August 7th, at Lundberg Family Farms in Richvale

Click here to REGISTER



County Cooperative Extension Newsletters

Newsletter cover thumbnail image
The following Cooperative Extension county offices distribute periodic Newsletters that contain useful information, announcements and resources about rice (and other crops).
Click to subscribe!

Colusa, Butte and Sutter/Yuba County rice newsletters serve Sacramento Valley counties and may contain the same or similar content:
Colusa County, RICE BRIEFS
• Butte County, RICE LEAF
• Sutter/Yuba Counties, RICE NOTES

• San Joaquin County, FIELD NOTES






UC Rice Blog

  • Armyworm Update June 30

    Added June 30, 2017

    We are seeing severe armyworm infestations in the field. Moth numbers have stayed relatively constant in a few locations, still on the increase...

  • How to Collect Herbicide Resistant Weed Seed for Testing

    Added June 27, 2017

    It may be a bit early in the season to start thinking about herbicide resistance, but in just a couple of weeks, most rice growers will have put...

  • New Weedy Rice Materials for the 2017 Season

    Added June 25, 2017
    Poster and pamphlet for weedy rice identificaiton in California

    Over the past year, weedy rice has become a top issue in California rice, both for individual growers and for the industry as a whole. Working...

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