pnut pnut Peanut Science 0095-3679 0095-3679 American Peanut Research and Education Society 10.3146/i0095-3679-18-1-3 Articles Control of Texas Panicum (Panicum texanum) and Southern Crabgrass (Digitaria ciliaris) in Peanuts (Arachis hypogaea) with Postemergence Herbicides1 W. James Grichar 2 Research Scientist, Texas Agricultural Experiment Station, Yoakum, TX 77995

1This research was supported in part by grants from the Texas Peanut Producers Board and various chemical companies.

 1 1991 18 1 6 9 1 8 1990 American Peanut Research and Education Society 1991 American Peanut Research and Education Society Abstract

Clethodim, cycloxydim, haloxyfop, fluazifop-P, fenoxaprop, and quizalofop were applied early or late postemergence to Texas panicum (Panicum texanum Buckl.) and southern crabgrass (Digitaria ciliaris (Retz.) Koel.) in peanuts (Arachis hypogaea L.). Clethodim at 0.11 and 0.14 kg/ha, cycloxydim at 0.11 and 0.17, and fluazifop-P at 0.17 and 0.21 kg/ha provided excellent Texas panicum control. Fluazifop-P provided erratic southern crabgrass control, while clethodim, cycloxydim, haloxyfop, fenoxaprop at 0.22 kg/ha, and quizalofop at 0.14 kg/ha provided excellent southern crabgrass control. Yields of peanuts were usually higher following early postemergence application, thus indicating the timing of application is important in improving yields.

 Key Words Clethodim; , cycloxydim; , haloxyfop; , fluazifop-P; , fenoxaprop; , quizalofop; , annual grasses; , Texas panicum; , southern crabgrass; , peanuts; , postemergence