PHYTOTOXICITY OF FLUMETSULAM ON PEANUT (ARACHIS-HYPOGAEA)

Field studies were conducted at Tifton, GA to quantify phytotoxicity o f flumetsulam on peanut as influenced by application rate and timing i n a weed free experiment. Flumetsulam PPI at rates up to 0.14 kg ai/ha visibly injured peanut and reduced canopy width, but injury from PPI flumetsulam at 0.07 kg/ha or less was no worse than a standard early p ostemergence (EPOST) treatment of bentazon (0.6 kg ai/ha) plus paraqua t (0.14 kg ai/ha). Flumetsulam EPOST at rates up to 0.07 kg/ha visibly injured peanut and reduced peanut canopy width, Flumetsulam injury at rates of 0.035 kg/ha EPOST was similar to that caused by bentazon plu s paraquat. Interactive effects of PPI and EPOST flumetsulam reduced e arly and mid-season pod and foliage biomass more than either applicati on alone. However, peanut recovered with final yields not affected by flumetsulam, regardless of rate or time of application.