KENAF (HIBISCUS-CANNABINUS L) RESPONSE TO 4 GRASS CONTROL HERBICIDES BROADCAST POSTEMERGENCE

The availability of postemergence grass control herbicides can prevent dependence on potentially unnecessary preemergence herbicides. No postemergence grass control herbicides have federal registration for kenaf in the United States. This research was conducted to collect data to support such registration. Clethodim, fluazifop, quizalofop, and sethoxydim applied at three rates did not injure established kenaf, reduce plant populations, reduce plant heights, or reduce stalk yields. Nomenclature: Clethodim, (E,E)-(+/-)-2-[1-[[(3-chloro-2-propenyl)oxy]imino]propl]-5-2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one; fluazifop, (+/-)-2-[4-[[5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxyl]-propanoic acid; quizalofop, (+/-)-2-[4-[(6-chloro-2-quinoxalinyl)oxy]phenoxy]propanoic acid; sethoxydim, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclo-hexen-1-one; kenaf, Hibiscus cannabinus L.