Managing Glyphosate Resistance in Southern Crops

Preserving herbicides, particularly glyphosate, involves a well-rounded diverse weed management program. A critical component of this is building programs around residual herbicides to extend weed control between applications. 

Rotating modes of action and limiting the frequency of glyphosate applications are also key to preserving this integral part of modern agriculture. For cotton, Syngenta recommends using no more than three in-crop applications per year if the glyphosate application is rotated with in-crop cultivation. In corn and soybeans, Syngenta recommends using no more than two applications of glyphosate on one field over a two-year period.

As a Southern grower, do you practice any of these techniques?  What do you think is the most helpful in battling herbicide resistance?

To hear what Mississippi State’s Dr. Dan Reynolds, has to say about what lies ahead for glyphosate resistance in cotton, listen to this audio clip. To hear more audio clips visit the links below.  Additional resources can be found on www.resistancefighter.com/library.

•    Ken Smith, University of Arkansas, discusses the looming problem of glyphosate-resistant Palmer pigweed in cotton. Listen >

•    Donnie Miller, Louisiana State University, discusses his best recommendation for delaying glyphosate resistance. Listen >

•    University of Tennessee's Larry Steckel offers his herbicide program recommendations to control glyphosate-resistant horseweed (marestail). Listen >