herbicide resistance

• By Larry Steckel • I was thinking it might be 2021 or at least 2020 before we would start getting reports of Xtend soybean fields that were wrapped up with Palmer amaranth. Wrong! It is 2019. I visited several soybean...

A Kansas State University researcher reports the first-ever study confirming Palmer amaranth has developed resistance to the herbicide 2,4-D, findings that may signal an important step in developing future controls. Vipan Kumar, a weed scientist at the Agricultural Research Center...

Better ways to manage weeds, soil fertility and learning the latest in variety breeding and testing are part of the wide-ranging agenda at the July 18 Row Crops Field Day at the Rohwer Research Station. This event, the first of...

• By Tommy Butts and Tom Barber • There are two new Extension publications available from the Arkansas Weed Science team, FSA2185 – Metolachlor Herbicides: What are the Facts, and MP554 – Herbicide Resistance Traits: Quick Reference Guide. Metolachlor herbicides are typically...

Waterhemp and Palmer amaranth, both members of the pigweed family, have become significant threats to crop yields and farm incomes across the Americas. In the United States, they compete with crops in the South and in parts of the...

• By Tom Barber • Horseweed (marestail) has always been an issue at spring burndown prior to planting. In the early 2000’s, it became a much bigger problem in the southern United States by developing resistance to glyphosate (Roundup). Horseweed can germinate...

• By Larry Steckel • Clethodim is quickly replacing glyphosate as the “go-to” herbicide for grass control in West Tennessee. It began a few years ago as folks found that ryegrass and poa in many fields could no longer be controlled...

Palmer amaranth is one of the most economically-damaging and difficult-to-control broadleaf weeds across the United States. Previously, Palmer amaranth in Kansas has developed resistance to group 2 (ALS), 5 (atrazine), 9 (glyphosate) and 27 (HPPD – mesotrione, Huskie, Laudis,...

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,...

A group of scientists recently reported a population of waterhemp in Missouri resistant to a record-breaking six herbicide modes of action. Their findings were recently published in the Weed Science Society of America's journal, Weed Science. The authors included Lovreet...

By Tom Barber • Horseweed (marestail) has always been an issue at spring burndown prior to planting. In the early 2000s, it became a much bigger problem in the Southern United States by developing resistance to glyphosate. Horseweed can germinate and grow...

A team led by Kansas State University researchers has cracked the genetic code about how Palmer amaranth quickly grows resistant to glyphosate herbicide. The findings could have broad implications for agriculture and other industries, according to a university news release. Their...

Rotating herbicide modes of action has been touted as a way to slow the development of resistance in weeds. But a recent study from the University of Illinois explains why rotation doesn't work. “If you were to ask farmers what...

a:link {color:green; background-color:transparent; text-decoration:none} a:visited {color:green; background-color:transparent; text-decoration:none} a:hover {color:blue; background-color:transparent; text-decoration:underline} a:active {color:green; background-color:transparent; text-decoration:none} Muthu Bagavathiannan, an assistant professor of weed science and agronomy with Texas A&M AgriLife Research, will hold a free Web seminar...

Dow AgroSciences plans to launch Elevore with Arylex active, a new burn-down herbicide that controls a broad spectrum of broadleaf weeds, including those resistant to glyphosate and ALS herbicides. Dow expects the Environmental Protection Agency to register the herbicide in...