Full TGIF Record # 225640
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Web URL(s):http://www.swss.ws/wp-content/uploads/docs/2008 Proceedings-SWSS.pdf#page=260
    Last checked: 07/24/2013
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Publication Type:
i
Report
Author(s):Willis, J. B.; Askew, S. D.
Author Affiliation:Virginia Tech, Blacksburg, VA
Title:Turfgrass tolerance to selected triketone herbicides
Section:Weed management in turf
Other records with the "Weed management in turf" Section
Meeting Info.:Jacksonville, Florida: January 27-30, 2008
Source:2008 Proceedings, Southern Weed Science Society. Vol. 61, 2008, p. 121.
Publishing Information:Champaign, Illinois: Southern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Herbicide efficacy; Herbicide evaluation; Herbicide injury; Mesotrione; Tembotrione; Topramezone; Triketones
Trade Names:Tenacity
Abstract/Contents:"Mesotrione has been under development for the turfgrass industry and will be sold as Tenacity™ early this year. Mesotrione is a triketone herbicide which inhibits the HPPD enzyme and thus carotenoid biosynthesis. Tembotrione and topramezone are also triketones and preliminary work indicated that these two products may hold promise for use in turfgrass. To our knowledge, this research is among the first exploratory field work evaluating tembotrione and topramezone in turfgrass. Our objectives are to evaluate these two triketone herbicides for use in several turfgrass species and for weed efficacy. Six trials were conducted this summer at the Glade Road Research Facility and at the Turfgrass Research Center in Blacksburg, VA. The same protocol was conducted with mature stands of bermudagrass, zoysiagrass, Kentucky bluegrass, creeping bentgrass, perennial ryegrass, and tall fescue. Treatments included tembotrione and topramezone applied at 0.75, 1.5, and 2.25 and 3, 6, and 8 fl oz/A, respectively, and mesotrione, at 8 fl oz/A. Mesotrione has been most effective with sequential applications at 3 week intervals in previous research, so all treatments were applied both once and twice at 3 week intervals. Tembotrione and topramezone were safe (<30% injury) to Kentucky bluegrass and tall fescue. Tembotrione and topramezone injured bermudagrass, zoysiagrass, and bentgrass. However, injury to bentgrass from topramezone was only temporary and it recovered by 3 WAT. Tembotrione significantly injured perennial ryegrass, but significant recovery was observed by 3 WAT. Low levels of injury were observed from single applications of tembotrione to zoysiagrass, while sequential applications were significantly more injurious. Product rate and sequential application increases both turf injury and weed control. Much research is needed to optimize rates for each turf species. Differential selectivity should be better understood before recommending specific turf uses. The new products show broad-spectrum activity toward summer-annual grasses, bentgrass (tembotrione only), bermudagrass, and several broadleaf weeds. We believe that tembotrione and topramezone, once better understood, have much promise for the turf industry."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Willis, J. B., and S. D. Askew. 2008. Turfgrass tolerance to selected triketone herbicides. South. Weed Sci. Soc. Proc. 61:p. 121.
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http://www.swss.ws/wp-content/uploads/docs/2008 Proceedings-SWSS.pdf#page=260
    Last checked: 07/24/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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