• By Daniel Stephenson and Josh Copes • Glyphosate-resistant Italian ryegrass has been an issue in the mid-South for the past 10 to 15 years. In Louisiana, growers have been battling this pest for five to 10 years, and the problem is spreading each year. Louisiana does not have ryegrass issues like Mississippi, but if control strategies are not implemented, ... Read More »
Tag Archives: herbicide resistance
Start collecting California rice weed seeds for resistance testing
It’s that time again! If you would like to submit seeds for herbicide resistance testing, many weed species will be maturing right about now. The UCCE Rice Weeds Program tests grower submitted seed samples of potentially herbicide-resistant watergrass species, sprangletop, smallflower umbrella sedge and bulrush. However, we encourage you to submit ANY species that you suspect to be resistant. We ... Read More »
Multiple herbicide resistance in barnyardgrass prompts red flag warning
• By Vicky Boyd, Editor • A grassy weed with resistance to multiple herbicides poses as big – if not a bigger – challenge to Arkansas rice growers than herbicide-resistant Palmer amaranth does to soybean and cotton producers. That was the sobering outlook University of Arkansas Weed Scientist Jason Norsworthy presented about herbicide-resistant barnyardgrass during the recent University of Arkansas ... Read More »
University of Arkansas hires new Extension weed scientist
The newest University of Arkansas System Division of Agriculture weed scientist says he expects to rack up more than a few miles of field walking as he learns more about the issues faced by Mid-South farmers. Hailing from southern Wisconsin, weed scientist Thomas Butts took his new position as Extension weed scientist on Nov. 26. He brings a diverse background, ... Read More »
Some fall-applied residuals may injure following year’s rice crop
Although fall-applied residual herbicides are recommended to control glyphosate-resistant Italian ryegrass, some can be detrimental to the following year’s rice crop, according to recently published research. Involved in the project were Ben Lawrence, a Mississippi State University graduate student; Dr. Jason Bond, MSU weed scientist; Henry Edwards, MSU graduate student; and Dr. Bobby Golden, MSU Extension agronomist. The researchers looked ... Read More »
Newly introduced Loyant offers new mode of action for troublesome weeds
With the introduction this season of Loyant with Rinskor Active from Corteva Agriscience, growers have a new mode of action to add to their weed-management toolbox, according to a news release. Read More »
Nichino, Kyoyu Agri Co. sign licensing agreement for rice herbicide
Wilmington, Del.-based Nichino America Inc. and Kawasaki, Japan-based Kyoyu Agri Co. Ltd. have signed a licensing agreement that would allow Nichino to market and sell the rice herbicide, pyraclonil, in California. Read More »
Shuffling the deck
Aerial dry-seeding system helps fight weed resistance with new herbicide mode as well as a different cultural practice. Read More »
California rice growers receive good news, bad news about weed management
California rice producers attending the recent annual Rice Field Day at Biggs received some good news and some bad news when it comes to weed control. Read More »