March 2008 - Posts

Glyphosate-Resistant Giant Ragweed Claims Sixth State

Giant ragweed in Tennessee is the latest weed to be added to the list of glyphosate-resistant weeds found on the International Survey of Resistant Weeds Website. Other states with resistant giant ragweed include Arkansas, Indiana, Kansas, Minnesota and

Don’t Control Waterhemp; Manage it

As planting season is approaching for most of the Midwest, so is the battle against weeds. A recent article in The Bulletin , an online newsletter published by the University of Illinois extension, discusses ways to manage the waterhemp rather than controlling

Johnsongrass becomes the 9th glyphosate-resistant species in the U.S.

Two areas in the southeast United States have confirmed Johnsongrass to be resistant to glyphosate herbicides. A recent article in Wallace’s Farmer said populations were confirmed in southeast Arkansas and near Clarksdale, Miss. In both cases resistant

Glyphosate contributes the biggest slice to feed resistance

Without looking at a field, one could predict that too much of one thing can’t be good. Glyphosate-resistant weeds in the U.S. did not exist before 1996. By looking at the herbicide chart demonstrating the use of various chemicals used in 1996 vs.

Glyphosate Resistance in the South – Manage Proactively, Not Passively

A Webinar held for southern retailers gave further insight into glyphosate resistance management. The Webinar included three panelists: Dr. Ken Smith , University of Arkansas professor and extension weed scientist Dr. Trey Koger, Mississippi State University

Market leaning in favor of fighting glyphosate resistance

Alternating chemicals and changing modes of action are ways growers can manage glyphosate resistance. Now, according to a February article on Agriculture Online , glyphosate application rates are on the rise, justifying the use of, or switch to, other