herbicide resistance

⋅ BY FRED MILLER ⋅ U of A System Division of Agriculture Researchers in Arkansas and Missouri have confirmed two genetic pathways that lead to herbicide resistance in weedy rice, a major pest for Arkansas rice growers. Most herbicide-resistant weedy rice in...

• By Vicky Boyd, Editor • Each year, University of Arkansas weed scientist Jason Norsworthy screens barnyardgrass seed samples sent in by growers and consultants who suspect the weed is resistant to one or more herbicides. This season will be no...

• 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...

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,...

• 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...

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,...

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....

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. This takes on more importance because of the growing...

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. The product is not currently registered for use in...

Aerial dry-seeding system helps fight weed resistance with new herbicide mode as well as a different cultural practice. By Vicky Boyd Editor Through three decades or so of experimentation, VA Farms has developed a dry seeding program that borrows from both...

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. As soon as the 2017 use season, they could have a new herbicide—Butte, a...