Full TGIF Record # 163359
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Web URL(s):https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2008/T029.pdf
    Last checked: 11/11/2016
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Publication Type:
i
Report
Author(s):Mitkowski, N. A.; Boesch, B.
Author Affiliation:Department of Plant Sciences, University of Rhode Island, Kingston, RI
Title:Preventative fungicide applications for the control of Typhula blight on creeping bentgrass, 2006-2007
Section:Turfgrass
Other records with the "Turfgrass" Section
Source:PDMR: Plant Disease Management Reports. Vol. 2, 2008, p. T029.
Publishing Information:St. Paul, MN: American Phytopathological Society
# of Pages:1
Keywords:TIC Keywords: Agrostis stolonifera; Fungicide efficacy; Fungicide evaluation; Preventive control; Typhula blight; Typhula incarnata
Cultivar Names:Penncross; Penneagle
Abstract/Contents:"Tests were conducted on a Bridgehampton silt loam located at the Skogley Memorial Turfgrass Research Facility at the University of Rhode Island. The turf was maintained at a 0.13-in. mowing height, irrigated as needed and a total of 4 lb N was applied in four separate applications throughout the course of the season as a slow release formulation. Plots measured 3 ft x 3 ft with no borders and were arranged in a randomized complete block design with three replicates on an original mixture of 83% Penncross and 17% Penneagle creeping bentgrass with minimal Poa annua invasion. Fungicides were applied using a CO2-pressurized hand held sprayer fitted with TeeJet 8004VS Visiflow flat fan nozzles delivering 3.2 gal/1000 sq ft at 40 psi. Fungicides were applied on two separate occasions: Early = 31 Oct 06, Late= 30 Nov 06. No mowing occurred after the early application. Plots were inoculated with T. incarnata on 8 Dec with approximately 2.65 oz. per 25 ft2 of 12 week old infected rye. Immediately after inoculation, plots were covered with 4-in. of loose hay and covered with a lightweight porous greenscover. Plots were uncovered on 19 Apr 07 and rated. Inoculation was successful, however only 25.0% disease was observed in control plots. In previous years, as much as 80% disease has been observed in control plots. Under the low levels of disease observed, all products produced relatively satisfactory results. PCNB was not as effective as expected. Although late application of PCNB (Revere 4000) did provide a reasonable amount of snow mold protection in the absence of other chemicals, early application of PCNB provided no better snow mold protection than the controls. This result is unexpected and is likely to be the result of either soil metabolism of the chemical or leaching. Since temperature data has been kept in Rhode Island, Nov and Dec 06 were the warmest in recorded history. In Kingston, warm temperatures predominated until mid-January (in the high 40° F range) and the soil did not freeze until the beginning of Feb (and only shallowly). Due to the warm temperatures, the ground under the inoculated plots never froze, and the grass was approximately 3-in. tall when the plots were uncovered, indicating relatively poor conditions for snow mold development. In an attempt to maximize disease expression, plots were uncovered 4 weeks later than in previous years. This, however, had minimal impact on increasing disease. Despite these obviously unfavorable conditions for snow mold development, the trial can be deemed at least marginally successful, based on the results below."
Language:English
References:0
Note:This item is as abstract and tables only!
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mitkowski, N. A., and B. Boesch. 2008. Preventative fungicide applications for the control of Typhula blight on creeping bentgrass, 2006-2007. PDMR: Plant Dis. Manage. Rep. 2:p. T029.
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https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2008/T029.pdf
    Last checked: 11/11/2016
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    Access conditions: Item is within a limited-access website
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