Many claim the widespread use of glyphosate as the cropping herbicide choice has resulted in a number of weeds in Michigan that escape control. Implementation of other weed management strategies is generally used to manage weed escapes that have increased tolerance to glyphosate. In 2006 and 2007, the soybean checkoff researched and helped promote residual herbicides for weed control.

With the recent introduction of Liberty Link, and the Roundup Ready 2 Yield seed traits, soybean producers are increasingly asking about yield and weed control comparisons when using these newer technologies as compared to non GMO and the older glyphosate seed technology. Because of the different companies...