Cheap glyphosate can’t replace residual herbicides

Published on: 16:14PM Mar 16, 2010
Chuck Foresman

The decline in glyphosate prices is a positive for your bottom line. But beware of the temptation to cut corners and reduce your use of residual herbicides to save money in 2010. The overuse of glyphosate and a lack of diversity in herbicide programs have led to the development of glyphosate-resistant waterhemp, ragweed, Palmer pigweed and horseweed (marestail).

Not applying residuals can lead to fields that look like these, and the effect of yield loss on your bottom far outweighs the savings from a glyphosate-only program.

Palmer pigweed in Georgia soybeans


Waterhemp in Illinois soybeans


Lambsquarters in Ohio soybeans