- Author: Whitney Brim-DeForest
Over the past year and a half, I have been conducting research and extension with weedy (red) rice (Oryza sativa L.), which has re-emerged as a pest in California rice fields. What makes this plant so interesting is that it is the exact same species as cultivated rice (also Oryza sativa L.). This means that it is edible (fit for human consumption), not subject to quarantine (not regulated at the state or federal level), and difficult to distinguish from cultivated rice in the field, since it looks a lot like the cultivated rice varieties. It is, however, considered a pest, due to its impact on yield and processing quality.
Because it is rice, and it is edible, my colleagues and I have had to do a lot of...
- Author: Whitney Brim-DeForest
- Author: Luis Espino
- Author: Timothy Blank
- Author: Teresa DeLeon
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From the UC Rice Blog...
The 2017 season kicked off with much fanfare regarding weedy rice. Thanks to the vigilance of the entire rice industry, the UCCE Rice Advisors received many calls regarding weedy rice, starting in late June, as growers finished their herbicide applications. Calls continued to come in through July and August. The California Crop Improvement Association (CCIA) began inspecting fields as the rice headed, and suspected plants were pulled and sent to the UCCE Weedy Rice Team for genetic testing.
By the end of the season, we had a total of:
- 53 samples submitted for...
- Author: Whitney Brim-DeForest
- Posted by: Gale Perez
Weedy Rice Workshops 2017
August 9, 2017 :: 9:00 AM-12:00 noon
New Earth Market Harvest Room
1475 Tharp Road, Yuba City, CA
August 10, 2017 :: 9:00 AM-12:00 noon
Colusa Casino
3770 Hwy 45, Colusa, CA
In the workshops, University of California Cooperative Extension (UCCE) will give updates on the current weedy rice situation and research being conducted in California. Dr. Nilda Burgos, University of Arkansas, will give a presentation on...
- Author: Whitney Brim-DeForest
- Posted by: Gale Perez
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 together, the University of California Cooperative Extension and the California Rice Commission have come up with a set of tools to assist in getting control of this pest. Of course, none of it would be possible without the input and cooperation of the Pest Control Advisers (PCAs) and California rice growers, who are the first line of defense in dealing with weedy rice. Additional assistance in material development and funding have come from the California Rice Research Board, the California Crop Improvement Association and the staff at the California Rice Experiment...
- Author: Whitney Brim-DeForest
In the past year, the California rice industry has begun to deal with a new pest: “weedy rice”, also known as “red rice”. Weedy rice is a common weed in rice-growing regions of the world, and when infestations are high, it can significantly reduce yields. In the southern USA, losses have been as high as 60% when uncontrolled. In 2016, through the efforts and cooperation of rice growers and Pest Control Advisors, weedy rice has been identified on over 10,000 acres in Butte, Glenn, Colusa, Sutter, Yuba, Placer and Yolo counties. Although 10,000 acres may sound like a lot, it is still only a small percentage of the total rice acreage in California (about...
