A forwarded request for California participation in research on herbicide resistance and integrated weed management.
As troublesome herbicide resistant weeds continue to develop and spread across the United States, effective weed management strategies require the use of multiple effective techniques to be used rather than relying on a singular method of weed control. Integrated weed management (IWM) is the practice of utilizing multiple weed management tactics to achieve weed suppression superior to what a single tactic could...
Several researchers in the UCD weed science program have been working on various aspects of glyphosate-resistant junglerice (Echinochloa colona) for the past few years. One of our undergraduate student interns, presented a poster at the 2018 Plant and Soil Conference (the California Chapter of the American Society of Agronomy) earlier this month in Fresno.
Drew reported on the (still in process) results of an experiment in which we grew seven populations of junglerice in growth chambers at 20, 30, and 40 C (~68, 86, 104 F) and treated them with a range of glyphosate doses (0, 0.5, and 1 lb ae/A). Drew, Sarah, and other lab members collected data on growth (biomass...
In our post yesterday, we shared the results of some of Caio's field research on management of the multiple-resistant Italian ryegrass population from the Sacramento Valley. In addition to that applied-research, Caio has also been doing some really interesting basic-research trying to understand the biochemical mechanisms of resistance to paraquat in that population.
Toward that end, his first peer-reviewed scientific journal article on that research was published recently in the open-access journal Frontiers in Plant Science. If you'd like to take a look at some of the technical results, here's a link to the article "
- Author: Caio Brunharo
- Author: Brad Hanson
Article written by UC Davis PhD student Caio Brunharo from his dissertation research. It was originally posted in the September 2017 "Weed Management Notes" newsletter from the UC Cooperative Extension office in Glenn County by new weed science and agronomy Farm Advisor Mariano Galla (also a UCD PhD student in weed science!).
Take care, Brad
The 59th annual Weed Day at UC Davis will be held next week on Thursday July 16th. It's not too late to register but there are only a few spots left before we reach capacity.
CE Specialist Joe DiTomaso is the Weed Day chair this year and he has organized a great morning field tour where we'll look at on-going herbicide trials in tomato, melon, safflower, and nut orchards. We'll also have a demonstration of a machine vision robotic cultivator in transplanted vegetables, a herbicide symptomology demonstration, and a visit to the USDA-ARS aquatic weed research facility. Following tradition, we'll also have a weed ID quiz (with...