Use of Sulfentrazone in a Peanut (Arachis hypogaea) Herbicide Program

Abstract

Field experiments were conducted at two Texas peanut growing locations to study weed control and peanut response to sulfentrazone. Sulfentrazone applied preemergence caused up to 96% peanut stunting when rated 4 weeks after planting. The severity of stunting increased as sulfentrazone rate increased. Eclipta control varied between 89 and 100% while Texas panicum control was never less than 73% regardless of rate. Yellow nutsedge control with sulfentrazone increased as the rate of sulfentrazone increased with control no higher than 81%. Purple nutsedge control varied from 83 to 100% and was not rate dependent. Peanut yields reflect the effect of sulfentrazone injury on plant growth and development as peanut yields decreased as sulfentrazone rate increased.