INFLUENCE OF ADJUVANTS ON HEMP SESBANIA (SESBANIA-EXALTATA) CONTROL BY CHLORIMURON

Hemp sesbania control by chlorimuron applied with crop oil concentrate at 1.0% v/v, BCH 815 at 1.0% v/v, methylated seed oil at 1.0%; v/v, a blend of methylated seed oil and organosilicone surfactant at 0.5% v/ v, organosilicone-based surfactant at 0.125% v/v, and nonionic surfact ant at 0.25% v/v was evaluated in field studies in 1994 and 1995. Cont rol by chlorimuron at 4.5 g ae/ha was greater when applied with BCH 81 5, organosilicone-based surfactant, and nonionic surfactant than with crop oil concentrate, methylated seed oil, and a blend of methylated s eed oil and organosilicone surfactant. When chlorimuron was applied at 4.5 g/ha with BCH 815 or nonionic surfactant, hemp sesbania control w as similar to that by chlorimuron at 9 g/ha applied with methylated se ed oil, the blend of methylated seed oil and organosilicone surfactant , or organosilicone-based surfactant.