Winter annual cover crops provide many benefits to Kentucky’s agricultural producers. One particularly important benefit is their contribution towards a program of integrated weed management. While growing, cover crops can suppress both winter annual weeds and early-emerging summer annuals like marestail, common ragweed, and common lambsquarters—all problematic weeds in soybean production. After termination, cover crop residues can continue to suppress weed emergence through physical, chemical, and biological means—particularly affecting these early-emerging weed species. The ability of cover crops to outcompete and suppress weeds has been linked to the amount of ground that they cover....