Three field experiments were conducted to compare the growth of sicklepod, Senna obtusifolia (L.) Irwin and Barnaby and the response of BXN 47 cotton to EPOST treatments of MSMA alone, Buctril alone and in combination. The objective was to identify treatments which would suppress sicklepod and promote a height differential between the cotton and sicklepod. Height measurements were taken over a four week period in order to record the length of time that treatment differences were maintained as well as injury ratings and lint yields of the cotton.