- Posted by: Gale Perez
From Brian German at AgNet West :: April 17, 2018
California rice growers will need to be on the lookout for two new problematic weed species this year. One of the species is called rough barnyardgrass (Echinochloa muricata) and the other is known as coast cockspur grass (Echinochloa walteri). The discovery of the weeds came after two growers having difficulty controlling weeds reached out to University of California researchers for assistance with identification.
“I took it to the Herbarium and they confirmed that both of the samples I took down there were Echinochloa muricata, which is related to the...
The $1 million UC Cooperative Extension Presidential Chair for California Grown Rice has been awarded to Whitney Brim-DeForest, UCCE rice advisor for Sutter, Yuba, Placer, Sacramento and Butte counties.
Brim-DeForest said she will use the funds generated from the endowed chair to hire a full-time technician to monitor a research study at UC Davis on weedy rice. Weedy rice is the same species as cultivated rice and it produces rice, however the grain falls off the plant before harvest.
- Author: Gale Perez
UC Rice Advisor Whitney Brim De-Forest is using a spray chamber to apply a foliar organic fertiliser to rice. She uses the chamber to make sure that they are applying a precise amount of the product.
Thanks to @balde.hamady for the video!
- 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...
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...