Full TGIF Record # 124115
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Web URL(s):https://www.plantmanagementnetwork.org/pub/trial/fntests/reports/2006/T035.pdf
    Last checked: 11/14/2016
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Publication Type:
i
Report
Author(s):Tredway, L. P.
Author Affiliation:Department of Plant Pathology, North Carolina State University, Raleigh, North Carolina
Title:Control of dollar spot in creeping bentgrass/annual bluegrass golf course fairways, 2005
Section:Turfgrass
Other records with the "Turfgrass" Section
Source:F&N Tests. Vol. 61, 2006, p. T035.
Publishing Information:St. Paul, MN: American Phytopathological Society
# of Pages:1
Keywords:TIC Keywords: Poa annua; Agrostis stolonifera; Dollar spot; Red thread; Preventive control; Fungicide trials; Application rates; Application timing; Disease severity; Golf fairways
Cultivar Names:Pennlinks
Abstract/Contents:"Fungicides were evaluated for preventative control of dollar spot and other diseases in creeping bentgrass fairways. This trial was conducted on #6 fairway at Blowing Rock Country Club in Blowing Rock, NC on a mixed stand of 'Pennlinks' creeping bentgrass and annual bluegrass. Mowing was performed 3 times weekly at a height of 0.375-in. with clippings collected, and the site was irrigated to prevent drought stress. Fertilizer was applied as 18-4-18 on 28 Apr (0.5 lb nitrogen/1000 sq ft), as 22-0-0 on 28 Jun (0.5 lb nitrogen/1000 sq ft), and as 46-0-0 (0.1 lbs nitrogen/1000 sq ft) on 11 Apr, 11 May, 21 Jun, 22 Jul, and 2 Aug. Proxy + Primo was applied on 11 Apr (5 + 0.025 oz/1000 sq ft) and Primo was applied alone at 0.27 fl oz/1000 sq ft on 11 May, 21 Jun, 22 Jul, and 2 Aug. Insect pests were suppressed with Merit (1.8 lb/1000 sq ft) on 28 Jun, and broadleaf weeds were controlled with Confront on 28 Apr (24 fl oz/1000 ft sq). Plots were 5 ft x 6 ft and were arranged in a randomized complete block with four replications. Fungicides were applied in water equivalent to 2 gal per 1000 sq ft with a CO2-powered sprayer at 40 psi using TeeJet 8004 nozzles. All treatments were applied on 23 May, 20 Jun, and 25 Jul. Red thread activity was assessed on 6 Jun by counting the number of infection centers in each plot. The number of dollar spot infection centers in each plot was also counted on 25 Jul and 15 Aug. Data were subjected to analysis of variance and means separation by Waller-Duncan k-ratio t test (k=100). Symptoms of red thread were observed in the experimental area on 6 Jun, or 2 weeks after the initial fungicide application. The infection centers were of a consistent size, approximately 2-in. to 4-in. in diameter. No significant differences in red thread incidence were detected among treatments, but only plots treated with 26GT (3 or 4 fl oz) were free of red thread symptoms. Dollar spot activity was first noted in early July and was evaluated on 25 Jul and 15 Aug. Several treatments provided good to excellent dollar spot control on both rating dates, including Emerald (0.18 oz), 26GT (4 fl oz), Eagle (2.4 fl oz), Banner Maxx (2 fl oz), Bayleton (0.5 and 1 oz), Spectro (5.76 oz), and 26/36 (3.75 oz). No significant differences were detected between 3336 and 3336 Plus on either evaluation date."
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Tredway, L. P. 2006. Control of dollar spot in creeping bentgrass/annual bluegrass golf course fairways, 2005. F&N Tests. 61:p. T035.
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https://www.plantmanagementnetwork.org/pub/trial/fntests/reports/2006/T035.pdf
    Last checked: 11/14/2016
    Requires: PDF Reader
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