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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2008/T022.pdf
Last checked: 11/14/2016
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Vincelli, P.;
Dixon, E.;
Williams, D.;
Burrus, P. |
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| Author Affiliation: | Vincelli and Dixon: Department of Plant Pathology; Williams and Burrus: Department of Plant and Soil Science, University of Kentucky, Lexington, KY |
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| Title: | Efficacy of fungicides for control of dollar spot in a mixed creeping bentgrass/Poa annua soil-based green, 2007 |
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| Section: | Turfgrass
Other records with the "Turfgrass" Section
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| Source: | PDMR: Plant Disease Management Reports. Vol. 2, 2008, p. T022[1]-T023[2]. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Disease control; Dollar spot; Fungicide efficacy; Fungicide evaluation; Golf greens; Poa annua; Sclerotinia homoeocarpa
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| Cultivar Names: | Penncross |
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| Abstract/Contents: | "The test was conducted on a Maury silt loam located at the University of Kentucky Turf Research Center near Lexington. The turf was maintained at 0.188-in. mowing height and fertilized with 1.5 lb N/1000 sq ft as urea on 26 Oct 06, with 1.5 lb N/1000 sq ft as urea on 8 Nov 06, and with 1.0 lb N/1000 sq ft as 18-9-18 on 28 Aug 07. Plots measured 4 ft x 4 ft with 2-ft borders, and were arranged in a randomized complete-block design with three replications. Fungicide sprays were applied using a CO2-pressurized hand-held sprayer fitted with Spraying Systems 8003E flat-fan nozzles delivering 1.5 gal/1000 sq ft, with the exception of the Biofungicide Blix-nix which was applied with 2.0 gal/1000 sq ft. Most treatments were first applied on 15 May, after dollar spot was first detected, with the remaining treatments applied according to the spray intervals indicated in the table (final application on 9 Aug). Banner MAXX/ Daconil Ultrex treatments were applied only once each to see if they could delay the onset of dollar spot. The Biofungicide Blix-nix with Buffer was first applied 18 April and the salicylic acid treatments were first applied 1 May. Where tank-mixes were alternated, sprays were applied every two weeks, with each tank-mix being applied once every four weeks. Visual counting of dollar spot infection centers was performed weekly. Selected, representative data are provided due to space constraints. The level of infestation by Poa annua was visually estimated on 1 May, when color differences between the two grass species and the presence of Poa annua seed heads facilitated discrimination. The amount of Poa annua per plot averaged 51.5% and did not differ significantly between treatments. Transformed data (log10) were analyzed using ANOVA (α=0.05) and Waller-Duncan k-ratio t-test, (k=100). Although statistics provided are based on analysis of transformed data, arithmetic means are presented in order to provide a better indication of the level of disease control provided by each treatment as well as the overall disease pressure in the trial. This reporting approach may lead to discrepancies between the rankings of treatments based on the arithmetic means and those based on the statistics provided in the table. Disease pressure was moderate to high in this test. Most treatments provided acceptable control of dollar spot for most of the duration of the test, with the exception of salicylic acid and the Biofungicide Bli-Nix with Buffer. Banner MAXX/ Daconil Ultrex treatments applied on 1 June did delay the epidemic of dollar spot better than the early spring treatments. Acclaim caused phytotoxicity with severe yellowing of the turf." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is as abstract and tables only!
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Vincelli, P., E. Dixon, D. Williams, and P. Burrus. 2008. Efficacy of fungicides for control of dollar spot in a mixed creeping bentgrass/Poa annua soil-based green, 2007. PDMR: Plant Dis. Manage. Rep. 2:p. T022[1]-T023[2]. |
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| Web URL(s):
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Last checked: 11/14/2016
Requires: PDF Reader |
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