pnut pnut Peanut Science 0095-3679 0095-3679 American Peanut Research and Education Society 10.3146/i0095-3679-25-1-10 Articles Control of Golden Crownbeard (Verbesina encelioides) in Peanut (Arachis hypogaea) with Postemergence Herbicides1 W. J. Grichar * and D. C. Sestak 2 Res. Scien. and Tech, The Texas Agric. Exp. Sta., Yoakum, TX 77995

1 This research was supported by the Texas Peanut Producers Board. Use of trade or common names does not imply endorsement or criticism of the products by the Texas Agric. Exp. Sta. or judgment of similar products not mentioned.

 *Corresponding author. 1 1998 25 1 39 43 16 5 1998 American Peanut Research and Education Society 1998 American Peanut Research and Education Society Abstract

Field experiments at five South Texas locations from 1992 to 1995 evaluated eight postemergence herbicides alone or in combination for golden crownbeard control and peanut yield. Imazapic provided inconsistent golden crownbeard control regardless of rate. Bentazon and 2,4-DB alone controlled ≥ 90% golden crownbeard while acifluorfen at 0.42 kg/ha and pyridate provided ≥ 80% control. Bromoxynil and imazethapyr alone or acifluorfen plus bentazon provided inconsistent golden crownbeard control.

 Key Words Groundnut; , over-the-top herbicides; , yellowtop