Full TGIF Record # 224917
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Web URL(s):http://www.ncwss.org/proceed/NCWSS-2012-Proceedings.pdf#page=91
    Last checked: 07/17/2013
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    Notes: Item is within a single large file
Publication Type:
i
Report
Author(s):Elmore, Matthew T.; Brosnan, James; Armel, Gregory R.; Barrett, Michael; Breeden, Gregory K.
Author Affiliation:Elmore, Brosnan and Breeden: University of Tennessee, Knoxville, TN; Armel: BASF, Research Triangle Park, NC; Barrett: University of Kentucky, Lexington, KY
Title:Creeping bentgrass (Agrostis stolonifera) tolerance to topramezone in combination with various herbicide safeners
Section:Foresty/industrial/turf/aqautics/forage/range
Other records with the "Foresty/industrial/turf/aqautics/forage/range" Section
Meeting Info.:St. Louis, MO: December 10-13, 2012
Source:67th Annual Meeting of the North Central Weed Science Society. Vol. 67, 2012, p. 91.
# of Pages:1
Publishing Information:Champaign, Illinois: North Central Weed Science Society
Related Web URL:http://wssaabstracts.com/public/17/abstract-49.html
    Last checked: 07/18/2013
    Notes: Proceedings of the Sixty-Seventh Annual Meeting of the Northeastern Weed Science Society reprint
http://wssaabstracts.com/public/17/proceedings.html
    Last checked: 07/18/2013
    Notes: Document is within a single large file; Proceedings of the Sixty-Seventh Annual Meeting of the Northeastern Weed Science Society reprint
Keywords:TIC Keywords: Agrostis stolonifera; Benoxacor; Cloquintocet-mexyl; Fenchlorazole-ethyl; Herbicide application; Isoxadifen-ethyl; Mefenpyr-diethyl; Naphthalic anhydride; Topramezone
Abstract/Contents:"Creeping bentgrass (CBG) (Agrostis stolonifera L.) is the most widely used cool-season turfgrass species on golf course fairways and tees in the United States. Despite widespread popularity, CBG is tolerant of few postemergence herbicides. Preliminary research indicates CBG has some tolerance to the HPPD-inhibiting herbicide topramezone, but improved tolerance is desirable. Two experiments were conducted at the University of Tennessee (Knoxville, TN) to evaluate safeners as a means to enhance CBG tolerance to topramezone. In Experiment 1, topramezone (37 g ha-1) was applied alone or in combination with the herbicide safeners naphthalic anhydride (NA) and isoxadifen - ethyl. Safeners were applied on the day of herbicide application or 3 days prior to herbicide application in a 5:1 or 10:1 safener:herbicide ratio. All treatments were applied with NIS at 0.25% v/v. Treatments were applied with a water carrier at 221 L ha-1 using a spray chamber to mature CBG grown in 6 cm cone-tainers filled with a peat moss, perlite vermiculit e growing medium. Plants were maintained in a greenhouse under ambient light. The experiment was repeated in time with treatments in each run applied on February 10 and June 1, 2012. Treatments were evaluated visually on a 0 (no injury) to 100% (complete control) scale at 7, 14 and 21 days after treatment (DAT). Plants were clipped to a 1.25 cm height at 21 DAT, verdure was collected, dried and weighed to determine biomass. Data were analyzed in a completely randomized factorial design with three replications in SAS 9.3 (α <= 0.05). Application of NA and isoxadifen reduced injury from topramezone 14 DAT. The effect of safener application timing and safener rate were not significant in either run. Therefore, it was determined that the lowest safener rate (5:1 safener:herbicide) applied at the time of herbicide application would be used in Experiment 2. Using the same methodology, benoxacor, cloquinctocet-mexyl, fenchlorazole-ethyl, isoxadifen-ethyl, NA, and mefenpyr-diethyl were investigated to determine thei r ability to reduce CBG injury from topramezone application in Experiment 2. Cloquintocet-mexyl reduced CBG injury from topramezone (37 g ha-1) 7 and 14 DAT. Additional studies are underway evaluating cloquintocet-mexyl effects on CBG injury and weed contr ol with topramezone in both greenhouse and field settings."
Language:English
References:0
Note:Reprint appears in Proceedings of the Sixty-Seventh Annual Meeting of the Northeastern Weed Science Society, Vol. 67 2013, p. 23
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Elmore, M. T., J. Brosnan, G. R. Armel, M. Barrett, and G. K. Breeden. 2012. Creeping bentgrass (Agrostis stolonifera) tolerance to topramezone in combination with various herbicide safeners. Proc. North Cent. Weed Sci. Soc. 67:p. 91.
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Web URL(s):
http://www.ncwss.org/proceed/NCWSS-2012-Proceedings.pdf#page=91
    Last checked: 07/17/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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MSU catalog number: SB 610 .N6
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