Northwest Research and Outreach Center

Northwest Research and Outreach Center
2900 University Ave.
Crookston, MN 56716
Phone: 218-281-8604
Fax: 218-281-8603
quirk010@umn.edu

Scouting for Glyphosate Resistance

Plants can survive a glyphosate application for many reasons.  The greater the diversity of species and the more uniform the response of plants surviving a glyphosate application the more likely plants are surviving due to reasons other than glyphosate resistance.  

The greater the continuum of plant responses from dead to normal-appearing plants, especially when observed in just a single species, the more likely plants are surviving due to resistance.  Glyphosate resistance can be difficult to identify due to low level resistance.  

A video demonstrating the continuum of plant responses was created to assist individuals in identifying glyphosate resistance.  The video is available at the following website:

http://www.ag.ndsu.edu/weeds/herbicide-resistant-weeds


At this website, select “Scouting for Glyphosate Resistance”.  Two videos are available. The long version includes an introduction about resistance and

demonstrates the continuum of plant response and the short version demonstrates the continuum of plant response.

If you suspect glyphosate resistance, contact Jeff Stachler
at jeff.stachler@ndsu.edu  or 701-231-8131.