Full TGIF Record # 112575
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Web URL(s):http://www.newss.org/proceedings/proceedings_2006.pdf#page=99
    Last checked: 07/22/2013
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Yelverton, F. H.; Gannon, T. W.; Warren, L. S.
Author Affiliation:North Carolina State University, Raleigh, North Carolina
Title:Silvery thread moss control on bentgrass putting greens with carfentrazone.
Section:Turfgrass and plant growth regulators
Other records with the "Turfgrass and plant growth regulators" Section
Meeting Info.:Providence, RI: January 3-6, 2006
Source:Proceedings: NortheasternWeed Science Society. No. 60, 2006, p. 94.
Publishing Information:Ithaca, NY: Northeastern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Bryum argenteum; Weed control; Agrostis; Carfentrazone; Herbicide trials; Resistance; Herbicide resistance; Chlorothalonil
Abstract/Contents:Silvery thread moss (Bryum argenteum) has become an increasing weed problem of putting greens possibly due to lower mowing heights and discontinued use of mercury-based fungicides. The consequence of moss invasion is reduced turfgrass quality as well as a nonuniform putting surface. Silvery thread moss encroachment occurs first in thin and weak turf including crowns of undulated putting greens that suffer from repeated scalping and spreads to remaining areas readily by sexual and asexual reproduction. Control measures for silverty thread moss in bentgrass putting greens have been researched minimally due to the recenet spread of the problem. Previous research suggests silvery thread moss can be suppressed in golf course putting greens with iron and nitrogen-containing fertilizers as well as with chlorothalonil. Research trials were initiated to evaluate carfentrazone on bentgrass putting greens for moss control. Carfentrazone recently received registration and is available alone or in mixes with broadleaf herbicides. Trials were initiated May 2004 and included 1, 2, or 3 applications of carfentrazone (Quicksilver 1.9 EW) applied at 1.03 or 2.06 fl oz/A. Sequential applications were applied 3 wk after the previous application. Additional trials were initiated in July 2005 evaluating carfentrazone alone or with a non-ionic surfacant. Rates evaluated in 2005 included 6.7 or 12.7 fl oz/A applied once or twice. Each trial included 2 applications of chlorothalonil applied at 174.2 fl oz/A. At 4 wk after trial application in 2004, single applications of carfentrazone were providing less than 5% control while two or three applications were providing minimal control ranging from 30-40%. Additionally, two applications of chlorothalonil provided no control at four weeks after initial treatment. At eight weeks after initial treatment, three applications of carfentrazone provided 10-20% silvery thread moss control while other treatments provided no control. In 2005 trials, one or two applications of carfentrazone (6.7 fl oz/A) provided 38 and 100% control, respectively, at four weeks after initial treatment. One or two applications of carfentrazone (12.7 fl oz/A) provided 53 and 93% silvery thread moss control, respectively at four weeks after initial treament. At six weeks after initial treatment, one application (6.7 fl oz/A) provided 50% siverly thread moss control while two applications provided 100%. One or two applications of carfentrazone (12.7 fl oz/A) provided 100% silvery thread moss control while two applications of chlorothalonil provided 75% control. The addition of a non-ionic surfactant did not increase silvery thread moss control at any observation date. Additionally, research trials were initiated that evaluated one or two applications of carfentrazone (6.7 or 12.7 fl oz per acre applied alone or with non-ionic surfactant) for bentgrass tolerance on A1, A4, L93 and Crenshaw bentgrass. No bentgrass phytotoxicity was observed at any time. These data indicated carfentrazone provides a viable option for silvery thread moss control in bentgrass putting greens. silvery thread moss control while tow
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Yelverton, F. H., T. W. Gannon, and L. S. Warren. 2006. Silvery thread moss control on bentgrass putting greens with carfentrazone.. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 60:p. 94.
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Web URL(s):
http://www.newss.org/proceedings/proceedings_2006.pdf#page=99
    Last checked: 07/22/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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MSU catalog number: SB 610 .N62 v. 60
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