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

Base image courtesy of the California Rice Commission

Upcoming Meetings & Events


Weedy rice workshops

• August 9th, Yuba City, 9 am - 12:00

• August 10, Colusa, 9 am - 12:00

Venue to be determined

Rice Experiment Station Field Day, August 30 2017

Rice Experiment Station
955 Butte City Highway [Hwy 99], Biggs, CA 95917

Rice Weed Course, September 15 2017

More informatio here: Rice Weed Course Info

2018 Rice Technical Working Group Conference,
February 19-22, 2018

More information Here: RTWG Save the Date

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

  • Some Weeds Ahead Of Rice This Year

    Added June 22, 2017
    Mexican sprangletop that has already set seed (about 20 days after rice seeding)

    I went out on a few farm calls in the past week, and have noticed a trend. Due to the unusually wet weather this spring, some of the weeds are...

  • Armyworms Are Back

    Added June 21, 2017
    IMG 5433

    I have received reports of significant defoliation due to armyworms from several areas: Glenn, Colusa, Butte and Yolo counties. In most...

  • Armyworm Monitoring 2017 - Week of June 19

    Added June 20, 2017

    Moth numbers have increased since the week of June 12, specially in the Colusa trap. The degree day model predicted worms in the fifth instar by...

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