Full TGIF Record # 251003
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Web URL(s):http://www.wsweedscience.org/wp-content/uploads/2013/09/2014WSWS_Proceedings_Final.pdf#page=66
    Last checked: 11/18/2014
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Umeda, Kai
Author Affiliation:University of Arizona, Phoenix, AZ
Title:Performance highlights of new herbicides for use on turfgrass weeds in Arizona
Section:Project 2: Weeds of horticultural crops
Other records with the "Project 2: Weeds of horticultural crops" Section
Meeting Info.:Colorado Springs, Colorado: March 10-13, 2014
Source:Western Society of Weed Science Annual Meeting 2014. Vol. 67, 2014, p. 56-57.
# of Pages:2
Publishing Information:Las Cruces, New Mexico: Western Society of Weed Science
Keywords:TIC Keywords: Amicarbazone; Application timing; Herbicide application; Herbicide evaluation; Methiozolin; Penoxsulam; Poa annua control; Sulfentrazone; Topramezone
Abstract/Contents:"Amicarbazone and methiozolin have been investigated for selective postemergence Poa annua control in cool-season turfgrasses in Arizona with fall and spring application timings. Spring application results of sequential applications of amicarbazone at rates ranging from 0.088 to 0.175 lb a.i./A caused injury to creeping bentgrass on golf course putting greens. P. annua control was initially acceptable and then declined to less than acceptable levels. Methiozolin at 0.5 lb a.i./A applied four times at 10-day intervals during late April through May 2013 did not exhibit acceptable efficacy against P. annua while being completely safe on the bentgrass. Previous experiments showed fall applications to be efficacious. Penoxsulam is being introduced commercially for use as a spring transition aid to remove perennial ryegrass from bermudagrass. Penoxsulam at 0.058 lb a.i./A was applied in early May 2013 and within a week caused minimal perennial ryegrass injury as growth reduction. At the end of May, penoxsulam removed only 30% of the ryegrass compared to herbicides that removed 100% of the ryegrass. A newly introduced combination product containing foramsulfuron plus halosulfuron plus thiencarbazone removed nearly all of the ryegrass in early June while showing 25% ryegrass injury within a week of a single application. During the summer the combination product demonstrated marginally acceptable purple nutsedge control at 82% with sequential applications. The combination product offered slightly better observable control of nutsedge compared to halosulfuron applied alone. In a third small plot experiment, the combination product gave less than acceptable control of maturing goosegrass. Topramezone at 0.006 lb a.i./A gave acceptable control of goosegrass while causing undesirable bleaching of bermudagrass turf. Higher rates of topramezone at 0.011 to 0.022 lb a.i./A caused increasing phytotoxicity of the turf and goosegrass control was similar at 93 to 95%. Sulfentrazone at 0.375 lb a.i./A applied sequentially before sulfonylurea herbicides for purple nutsedge control was better than being applied sequentially after sulfonylurea herbicides. At 4 weeks after the sequential applications, the sulfentrazone followed by sulfonylurea herbicides performed nearly similar as the sequential sulfonylurea herbicides."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Umeda, K. 2014. Performance highlights of new herbicides for use on turfgrass weeds in Arizona. Proc. West. Soc. Weed Sci. 67:p. 56-57.
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    Last checked: 11/18/2014
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    Notes: Item is within a single large file
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