- Author: Ben Faber
- Posted by: Gale Perez
A recent call about the poor control of marestail (horseweed, Conyza canadensis) to glyphosate (Roundup®) wasn't surprising, but that paraquat didnt do the trick was. It turns out that there is multiple resistance to the materials. If horseweed is resistant to glyphosate it is possibly going to be resistant to paraguat which also means that hairy fleabane which has glyphosate resistance could also show resistance to paraquat. A recent study reports on the increased Conyza resistance to paraquat (Distribution of Conyza sp. in Orchards of California and Response to Glyphosate and Paraquat, Moretti et al,
- Posted by: Gale Perez
Be sure to check out the following articles in the Good Fruit Grower magazine (April 24, 2018)
Herbicide resistance pushes California grape growers to try bringing back weed control strategies such as sheep and cultivation -- UC Cooperative Extension Weed Science Advisor John Roncoroni quoted in article
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- Posted by:: Gale Perez
From the California Ag Today website on March 21, 2018
https://californiaagtoday.com/herbicide-limits-plantings-cilantro/
Caparol Label Change Sought To Reduce Plant-Back Restrictions Following Cilantro
By Patrick Cavanaugh, Editor, California Ag Today
Cilantro production is important in California and more growers are planting it. However,...
/span>- Author: Gale Perez
Here's the latest issue of the Lassen Farm Advisor's Update newsletter from Tom Getts, Weed Ecology and Cropping Systems Farm Advisor.
September 2017 Contents:
- Controlling Scotch Thistle with Fall or Spring Applications of Herbicides
- Myrtle Spurge
- Low Lignin Alfalfa: Is It Right For You?
- Upcoming Events
Download and view the newsletter here.
HTML Link:
- Posted by: Gale Perez
The Western IPM Center's May 2017 newsletter just came out.
The IPM VIDEO OF THE MONTH is on a robotic herbicide sprayer that targets weeds.