Scientists Learn How Horseweed Shrugs Off Herbicide


According to a recent article in the Journal of Agricultural and Food Chemistry describing work by scientists at Colorado State University, the U.S. Department of Agriculture and the University of Adelaide in Australia, certain variants of Palmer amaranth, or pigweed, for example, have become resistant by overproducing the EPSPS enzyme – to the point that it cannot all be bound by glyphosate.