Abstract
Arkansas is considering a 120-day ban on the use of dicamba herbicide on cotton and soybeans. The ban would be a response to farmers who say dicamba drifted to their fields and damaged crops. Dicamba is used to control broad-leaved weeds, including those such as Palmer amaranth that have developed resistance to the herbicide glyphosate. Herbicide-resistant weeds have become a major problem for farmers, particularly in the southern U.S. This year, cotton and soybean farmers had the option to plant crops genetically modified to tolerate being sprayed with dicamba. The Arkansas State Plant Board approved a new dicamba formulation—BASF’s Engenia—for use during the growing season. Engenia is an N,N-bis-(3-aminopropyl)methylamine salt of dicamba developed by BASF to reduce drift. Farmers are required to use Engenia rather than older formulations and follow detailed application instructions. Even with those controls in place, the Arkansas plant board has received 135 complaints from farmers alleging
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