Adding second herbicide limits weed resistance

摘要

Weed control is synonymous with glyphosate use to many row crop producers, but a resistant weed in the Delta is making producers change their management strategies. John Byrd, weed scientist with the Mississippi State University Extension Service, said mare's tail or horseweed has become, resistant to glyphosate applications in the Delta. Tennessee and Arkansas are fighting resistant strains of this weed, too, and Arkansas has just confirmed glyphosate-resistant populations of common ragweed.