The Roundup Ready crop era and the robust activity of glyphosate has almost eliminated the need for an applicator to be knowledgeable about adjuvants. Arguably, glyphosate is the most forgiving herbicide when applied under less than optimal conditions or application methods. Glyphosate can be optimized with proper adjuvant selection, however, the lack of doing such can be offset by just applying progressively higher rates of glyphosate. Continued abuse of glyphosate in these applications eventually led to the evolution of glyphosate-resistant weed biotypes which has required the use of alternative herbicides to glyphosate.
Soil Science Extension
University of Wisconsin Madison