Author:
Hicks Charles P.,Jordan Thomas N.
Abstract
Under greenhouse conditions, approximately 50% visible control of bermudagrass [Cynodon dactylon(L.) Pers. ♯3CYNDA], quackgrass [Agropyron repens(L.) Beauv. ♯ AGRRE], and wirestem muhly (Muhlenbergia frondosaL. ♯ MUHFR) was obtained using 0.56 kg/ha glyphosate [N-(phosphonomethyl)glycine], CGA-82725 {2-propynyl-2-[4-([3,5-dichloro-2-pyridinyl] oxy) oxy)phenoxy propanoate}, 0.28 kg/ha fluazifop-butyl {(±)-butyl 2-[4-[(5-(trifluoromethyl)-2-pyridinyl)oxy] phenoxy] propanoate}, sethoxydim {2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one}, and 0.11 kg/ha haloxyfop-methyl [methyl 2-(4-((3-chloro-5-(trifluoromethyl)-2-pyridinyl)oxy)phenoxy)propanoate]. Except for quackgrass, sethoxydim and fluazifop-butyl reduced shoot regrowth in plants clipped 3 to 6 h after treatment Sethoxydim required a 24-h duration on quackgrass foliage to reduce growth. Fresh weights of haloxyfop-methyl- and CGA-82725-treated plants required a 12- to 24-h clipping for reduced regrowth in all species. For all herbicides and species tested, little or no regrowth occurred when plants were clipped 48 h after treatment. A 1-h interval between split applications of sethoxydim and a 24-h interval between split applications of fluazifop-butyl and haloxyfop-methyl reduced fresh weights of bermudagrass regrowth when compared to an equivalent single rate. Regrowth of treated quackgrass indicated a 24-h interval was required for reductions with split applications of sethoxydim, fluazifop-butyl, and haloxyfop-methyl. Wirestem muhly regrowth was reduced after a 1-h interval between applications. In all species, superior control was obtained using two half-rate applications compared to one full-rate application.
Publisher
Cambridge University Press (CUP)
Subject
Plant Science,Agronomy and Crop Science
Reference25 articles.
1. Wirestem muhly control in soybeans;Czapar;North Cent. Weed Control Conf.,1982
2. Absorption, action and translocation of glyphosate;Sprankle;Weed Sci.,1975
3. Targanyi J. and Mikulas J. 1982. The control of Cynodon dactylon in vines with fluazifop-butyl. Proc., British Crop Protection Conf.–Weeds. Pages 907–911.
4. Sethoxydim (Poast) EUP results for quackgrass control in soybeans;McKeague;North Cent. Weed Control Conf.,1981
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