Weed populations expressing resistance to glyphosate and other herbicides have become more widespread in soybeans and difficult to manage. Waterhemp, giant ragweed, horseweed, and morning glories are commonly found and in 2013, researchers documented the presence of Palmer amaranth in over 20 counties. No-till systems and the repeated use of similar herbicides have led to herbicide resistance in these weeds. In no-till soybeans, glyphosate-resistant weeds pose a serious problem to growers. This project will determine the presence and distribution of glyphosate- and other herbicide-resistant weed biotypes.
Key Benefactors:
farmers, agronomists, ag retailers, applicators, extension specialists