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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2012/T012.pdf
Last checked: 11/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Report |
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| Author(s): | Vincelli, P.;
Dixon, E.;
Williams, D. |
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| Author Affiliation: | Vincelli and Dixon: Dept. of Plant Pathology; Williams: Dept. 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, 2011 |
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| Section: | Turfgrass
Other records with the "Turfgrass" Section
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| Source: | PDMR: Plant Disease Management Reports. Vol. 6, 2012, p. T012. |
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| Publishing Information: | St. Paul, Minnesota: American Phytopathological Society |
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| # of Pages: | 4 |
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| Related Web URL: | http://www.plantmanagementnetwork.org/pub/trial/PDMR/volume6/abstracts/T012.asp
Last checked: 04/30/2012
Access conditions: Document is within a limited-access website
Notes: Summary only |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Bispyribac-sodium; Bleaching; Dollar spot; Fungicide evaluation; Phytotoxicity; Poa annua; Sclerotinia homoeocarpa; Silty soils; Tank mix; Waller-Duncan test
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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 18-9-18 at the rate of 1.5 lb N/1,000 sq ft on 3 Oct 10 and 1.0 lb N/1,000 sq ft on 12 Apr 11. 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/1,000 sq ft. Treatments were first applied on 24 May, after dollar spot was first detected, with the remaining treatments applied according to the spray intervals indicated in the table (final application on 2 Aug). Where tank-mixes were rotated, 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 10 May, when color differences between the two grass species and the presence of P. annua seed heads facilitated discrimination. The amount of P. annua per plot averaged 33 percent and did not differ significantly between treatments. Transformed data (log10) were analyzed using ANOVA (alpha=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 low to moderate in this test. Most treatments provided acceptable control of dollar spot for most of the duration of the test, with the exception of Chitooligosaccharide, food grade molasses and Velocity 17.6SG throughout the trial. There was a mild phytotoxic response observed from A18035B on July 26, with a bleaching of older leaves." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Vincelli, P., E. Dixon, and D. Williams. 2012. Efficacy of fungicides for control of dollar spot in a mixed creeping bentgrass/Poa annua soil-based green, 2011. PDMR: Plant Dis. Manage. Rep. 6:p. T012. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2012/T012.pdf
Last checked: 11/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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