Cotton and Weed Response to Combinations of Glyphosate and Glufosinate Applied with Acephate and Residual Herbicides

Growers often apply more than one pesticide to control weeds and insects during the first month of the season when growing cotton. Although mixtures of glyphosate and glufosinate with residual herbicides or acephate have been evaluated in separate experiments, interactions of these post emergence herbicides, the residual herbicides S-metolachlor or acetachlor, and acephate have not been defined in the same experiment. Therefore research was conducted to determine weed control and cotton response to these pesticide combinations. Although some differences in weed control were noted with combinations included in this research, differences were relatively minor, suggesting that glyphosate and glufosinate are compatible with residual herbicides and acephate.