Full TGIF Record # 227390
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Web URL(s):http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=332
    Last checked: 08/12/2013
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Publication Type:
i
Report
Author(s):Post, A. R.; McCall, D. S.; Askew, S. D.
Author Affiliation:Virginia Tech, Blacksburg, VA
Title:Preemergence control of silvery threadmoss protonem
Section:Weed management in turf
Other records with the "Weed management in turf" Section
Meeting Info.:Houston, Texas: January 28-30, 2013
Source:Proceedings of the Southern Weed Science Society: 66th Annual Meeting. Vol. 66, 2013, p. 245.
Publishing Information:Champaign, Illinois: Southern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Bryum argenteum; Combination treatments; Comparisons; Fungicide application; Golf greens; Herbicide efficacy; Herbicide evaluation; Preemergence weed control
Abstract/Contents:"Silvery threadmoss has become a major weed problem on creeping bentgrass putting greens and there are limited pesticide options for postemergece silvery threadmoss control in this system. Carfentrazone is the only herbicide currently labeled for silvery threadmoss control on putting greens. Several fungicides also have supplemental registrations for postemergent moss control on putting greens. Although these products are marketed for control of mature moss stands, the literature contains no information on pesticide effects on moss establishment from propagules. Silvery threadmoss has three propagule types that allow it to spread on a putting green: spores, bulbils, and fragments. Since little is known about how pesticides affect these propagules or whether they are affected differently, our objective was to evaluate the efficacy of several herbicide, fungicide, and herbicide + fungicide combinations for preemergent control of silvery threadmoss spores and bulbils. Three studies were initiated in three growth chambers at the Glade Road Research Facility at Virginia Tech, Blacksburg, VA. Treatments were arranged in a 2 x 20 factorial design and replicated three times in each growth chamber. Factor one was propagule type (bulbil or spore) and factor two was pesticide treatments (Table 1). Pesticides were homogenized into a solid 0.7% GelRite media amended with MS media + Gamborg vitamins. Each treatment (Table 1) was added to the media prior to pouring plates so that it equaled 80% of a v/v field rate applied over 6cm depth of soil. Spores or bulbils were plated into each treatment and placed in growth chambers at 25°C for three weeks. Digital images were taken 0, 7, 14, and 21 days after treatment. Green pixel count data were captured in Sigma Scan Pro 5 and analyzed using proc glm in SAS 9.2. After 21 days 10 treatments controlled spores and bulbils 95% or greater including carfentrazone, all combinations with carfentrazone (n=3), pyraflufen-ethyl, oxadiazon, oxyfluorfen, sulfentrazone, experimental 2, and flumioxazin. The remaining nine treatments were not effective at preventing moss establishment from spores or bulbils. Two treatments increased moss growth: methiozolin caused bulbils to grow 24% more than the nontreated and foestyl-Al cause spores to grow 6% more than the nontreated control. This research suggests several additional options for effective moss control on putting greens and the first reports of preemergent silvery threadmoss control with registered pesticides."
Language:English
References:0
Note:This item is an abstract and table only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Post, A. R., D. S. McCall, and S. D. Askew. 2013. Preemergence control of silvery threadmoss protonem. South. Weed Sci. Soc. Proc. 66:p. 245.
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http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=332
    Last checked: 08/12/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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