Full TGIF Record # 224716
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Web URL(s):http://www.newss.org/proceedings/proceedings_2008.pdf#page=73
    Last checked: 07/16/2013
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Publication Type:
i
Report
Author(s):Hart, S. E.; Mansue, C.; McCullough, P. E.
Author Affiliation:Rutgers, The State University of New Jersey, New Brunswick, NJ
Title:Yellow nutsedge control in cool-season turf
Section:Turfgrass and plant growth regulators I
Other records with the "Turfgrass and plant growth regulators I" Section
Meeting Info.:Philadelphia, Pennsylvania: January 7-10, 2008
Source:Proceedings of the Sixty-Second Annual Meeting of the Northeastern Weed Science Society. Vol. 62, 2008, p. 55-56.
Publishing Information:Baltimore, Maryland: Northeastern Weed Science Society
# of Pages:2
Keywords:TIC Keywords: Cool season turfgrasses; Cyperus esculentus; Halosulfuron; Herbicide efficacy; Herbicide evaluation; Lolium perenne; Sulfentrazone; Sulfosulfuron; Weed control
Cultivar Names:Manhattan II
Trade Names:V-10142
Abstract/Contents:"Field experiments were conducted in 2006 and 2007 in Adelphia, NJ to evaluate postemergence applications of halosulfuron, sulfosulfuron, sulfentrazone, and V-10142 for yellow nutsedge (Cyperus esculentus) control in perennial ryegrass (Lolium perenne L. 'Manhattan II'). All herbicide treat ments were applied once or twice on an approximately 5 week interval. Halosulfuron was applied at 35 or 70 g ai/ha, sulfosulfuron was applied at 13, 26, and 39 g ai/ha, sulfentrazone was applied at 140, 280 or 420 g ai/ha, and V-10142 was applied at 280, 560, or 840 g ai/ha. Halosulfuron, sulfosulfuron and V-10142 treatments included nonionic surfactant at 0.25% v/v. Herbicide application dates were June 20 and July 24 in 2006 and July 2 and August 13 in 2007. Turfgrass injury and yellow nutsedge control were evaluated 3 weeks after initial treatment (WAIT), prior to sequential applications, and 9 and 12 WAIT. Treatments were applied to 0.9 by 3 m plots with a single-nozzle CO2 backpack sprayer system utilizing a 9504EVS nozzle tip which delivered 374 L/ha of spray solution at 221 kPa. Experimental design was a randomized complete block with 4 replications per treatment. In 2006, prior to the sequential application yellow nutsedge control ranged from 89 to 95% for halosulfuron, 56 to 86% for sulfosulfuron, 63 to 90% for sulfentrazone, and 60 to 71% for V-10142. There was no turfgrass injury detected from any of the herbicide treatments. At 9 WAIT, perennial ryegrass injury from sequential sulfosulfuron treatments ranged from 15 to 31%. Injury from these treatments increased substantially at 12 WAIT and ranged from 26 to 50%. Injury observed was in the form of chlorosis and stand thinning. At 12 WAIT halosulfuron provided 87 to 98% yellow nutsedge control. Sequential treatments of halosulfur on did not increase yellow nutsedge control relative to single applications. Single applications of sulfosulfuron provided 60 to 74% yellow nutsedge control but sequential applications increased yellow nutsedge control to 85 to 96%. Single applications of sulfentrazone provided 70 to 90% control but sequential applications at 240 and 420 g ai /ha improved control to 93 and 97%, respectively. Single applications of V-10142 provided 43 to 51% control but sequential applications improved control to 76 to 80%. In 2007, prior to the sequential application yellow nutsedge control ranged from 78 to 91% for halosulfuron, 44 to 85% for sulfosulfuron, 28 to 88% for sulfent razone, and 35 to 45% for V-10142. There was no turfgrass injury detected from any of the herbicide treatments. At 9 WAIT, no turfgrass injury was detected from any of the sequential herbicide treatments. At 12 WAIT, halosulfuron provided 77 to 84% yellow nutsedge control. Sequential treatments of halosulfuron increased control to 91 to 94%. Single applications of sulfosulfuron performed much better in 2007 providing 84 to 90% and sequential applications at all three rates 96 to 97% control. Single applications of sulfentrazone provided 75 to 82% control, similar to observations in 2006. Sequential applications at 240 and 420 g ai/ha improved control to 91 and 93%, respectively. Single applications of V-10142 provided 62 to 70% control but sequential applications improved control to 80 to 90%. The results of these studies suggest that sulfosulfuron and sulfentrazone may provide a viable 56 alternative to halosulfuron for yellow nutsedge control especially when applied sequentially. It does not appear that single applications of V-10142 can provide commercially acceptable levels of yellow nutsedge control and sequential applications provided significantly less control than sequential applications of halosulfuron, sulfentrazone, and sulfosulfuron."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hart, S. E., C. Mansue, and P. E. McCullough. 2008. Yellow nutsedge control in cool-season turf. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 62:p. 55-56.
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http://www.newss.org/proceedings/proceedings_2008.pdf#page=73
    Last checked: 07/16/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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