Tips for maximizing glyphosate activity in Roundup Ready soybean
Christy Sprague, Crop & Soil Sciences

Table 1: Glyphosate Products Registered for Postemergence Applications in Roundup Ready Crops

a a.e. acid equivalent, lbs of glyphosate acid per gallon. b Y = Yes surfactant is needed, S = Sometimes under certain conditions additional surfactant may improve control; N = No surfactant is needed.  For products that may need a surfactant, a non-ionic surfactant at 0.25 to 1.0% v/v is the typical recommendation.  Consult the herbicide label to verify the type and rate of surfactant to include. AMS should be included at 17 lb/100 gal to improve glyphosate activity. c Only labeled for over the top applications in Roundup Ready soybeans. d Treated alfalfa and weeds can be harvested and fed to livestock after 36 hours.