Managing Winter Cover Crops in Cotton to Improve Soil Health in a Field With a History of Glyphosate Resistant Weeds

Long-term cover crop plots were established in October 2011 at Clarkton, Missouri to evalutate their impact on soil health in a cotton field.  Treatments included pure stands and mixtures of wheat, rye, Austrian winter peas, crimson clover, rapeseed, and tillage turnips. The field had a history of glyphosate resistant mare's tail and palmer pigweed.  As part of prevention weed management, one half of each plot was sprayed with dicamba, 2,4-D, and flumioxazin in early March. Cover crops in the rest of the plot were allowed to grow until the week before cotton planting.