EFFICACY AND ECONOMY OF WEED MANAGEMENT-SYSTEMS FOR SICKLEPOD (SENNA-OBTUSIFOLIA) AND MORNINGGLORY (IPOMOEA SPP) CONTROL IN SOYBEAN (GLYCINE-MAX)

Field experiments were conducted in Tifton, Midville, and Athens, GA t o determine economic net returns from PRE-broadcast, PRE-banded, POST, and POST-directed herbicide treatments and inter-row cultivation in c onventional-tillage soybean. Metribuzin applied PRE-broadcast was more effective for sicklepod and morningglory control than PRE-banded. Soy bean net returns were not significantly reduced in two of three years in plots treated with metribuzin applied PRE-banded compared with broa dcast application. The addition of POST or POST-directed herbicides in creased treatment net returns over PRE-broadcast and PRE-banded metrib uzin two of the three years of the study. No significant soybean injur y was observed.