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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2007/T004.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, Kentucky |
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| Title: | Efficacy of fungicides for control of brown patch of creeping bentgrass on a sand-based green, 2006 |
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| Source: | PDMR: Plant Disease Management Reports. Vol. 1, 2007, p. T004. |
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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: Fungicide trials; Fungicides; Fungus control; Brown patch; Agrostis stolonifera; Sand-based golf greens; Quality
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| Abstract/Contents: | "The test was conducted on a sand-based green located at the University of Kentucky Turf Research Center near Lexington. The turf was maintained at a 0.188-in. mowing height, and fertilized with 1.5 lb N/1000 sq ft as urea on 19 Oct 05, 1.0 lb N/1000 sq ft as 18-18-15 on 1 Mar 06, 1.0 lb N/1000 sq ft as 25-5-10 on 19 Apr 06, and with 0.75 lb N/1000 sq ft as urea on 20 Jun 06 to promote brown patch development. Irrigation was applied twice daily to promote brown patch development beginning 18 Jun. Plots measured 3 ft x 3 ft with 1.5-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. All presymptom treatments were applied once on 30 Mar, and the spray schedule treatments were first applied on 9 May, before brown patch was observed, with remaining applications made thereafter according to the schedules indicated in the tables (final application on 16 Aug). Brown patch assessments were based on % plot affected and ratings of verdure loss within patches (verdure is plant vigor measured by % green foliage within diseased patches). The level of infestation by Poa annua was visually estimated on 24 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 18.5% and did not differ significantly between treatments. Selected, representative data are provided because of space constraints. Data for brown patch were transformed (arcsine) and analyzed using ANOVA and Waller-Duncan k-ratio t-test, (k=100). Although statistics provided are based on analysis of arcsine- 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. Weather was generally favorable for brown patch, and disease pressure was high from mid-Jul through early-Aug. The presymptom sprays did not control Brown patch, whereas the Signature tank mix, Tartan applied at 2-4 wk intervals, and Daconil with monopotassium phosphate all controlled brown patch. No phytotoxicity or growth regulator effects were noted." |
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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. 2007. Efficacy of fungicides for control of brown patch of creeping bentgrass on a sand-based green, 2006. PDMR: Plant Dis. Manage. Rep. 1:p. T004. |
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Last checked: 11/14/2016
Requires: PDF Reader |
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