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Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2011/T022.pdf Last checked: 11/11/2016 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Report |
Author(s): | Vincelli, P.;
Dixon, E.;
Williams, D.;
Burrus, P. |
Author Affiliation: | Vincelli and Dixon: Dept. of Plant Pathology; Williams and Burrus: Dept. of Plant and Soil Science, University of Kentucky, Lexington, KY |
Title: | Efficacy of fungicides for control of brown patch of creeping bentgrass on a sand-based green, 2010 |
Section: | Turfgrass Other records with the "Turfgrass" Section
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Source: | PDMR: Plant Disease Management Reports. Vol. 5, 2011, p. T022. |
Publishing Information: | St. Paul, MN: American Phytopathological Society |
# of Pages: | 3 |
Keywords: | TIC Keywords: Agrostis stolonifera; Disease control; Fungicide efficacy; Fungicide evaluation; Golf greens; Rhizoctonia blight; Turfgrass quality
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Cultivar Names: | Penncross |
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 18-9-18 at the rate of 1.5 lb N/1,000 sq ft on 6 Oct 09, and 1.0 lb N/1,000 sq ft on 12 Apr 10, and 1.0 lb N/1,000 sq ft on16 Jun 10 to promote brown patch development. Irrigation was applied twice daily to promote brown patch development beginning 16 Jun 10. 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/1,000 sq ft. Treatments were first applied on 5 May, before brown patch was observed, with remaining applications made thereafter according to the schedules indicated in the tables (final application on 12 Aug). Brown patch assessments were based on percent plot affected and ratings of verdure loss within patches (verdure is plant vigor measured by percent green foliage within diseased patches). Visual estimates of turf quality were taken once and included leaf necrosis from brown patch and several abiotic factors. The level of infestation by Poa annua was visually estimated on 18 Apr, 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 29 percent and did not differ significantly between treatments. Data for brown patch were transformed (arcsine) and analyzed using ANOVA (alpha=0.05) 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 moderate from mid-Jun through mid-Aug. All treatments effectively controlled brown patch. No phytotoxicity or growth regulator effects were noted." |
Language: | English |
References: | 0 |
Note: | This item is as abstract and tables only! Tables |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Vincelli, P., E. Dixon, D. Williams, and P. Burrus. 2011. Efficacy of fungicides for control of brown patch of creeping bentgrass on a sand-based green, 2010. PDMR: Plant Dis. Manage. Rep. 5:p. T022. |
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