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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2011/T023.pdf
Last checked: 11/14/2016
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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: Dept. of Plant Pathology; Williams and Burrus: Dept. of Plant and Soil Science, University of Kentucky, Lexington, KY |
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| Title: | Efficacy of fungicides for control of dollar spot of creeping bentgrass on a sand-based green, 2010 |
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| Section: | Turfgrass
Other records with the "Turfgrass" Section
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| Source: | PDMR: Plant Disease Management Reports. Vol. 5, 2011, p. T023. |
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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; Copper spot; Disease control; Dollar spot; Fungicide efficacy; Fungicide evaluation; Golf greens; Mancozeb; Sand-based golf greens
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| Cultivar Names: | Penncross |
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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 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 on 16 Jul 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, a few days after dollar spot was observed, with remaining applications made thereafter according to the spray interval indicated in the tables (final application on 12 Aug). Visual counting of dollar spot infection centers was performed weekly. 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% and did not differ significantly between treatments. Data for dollar spot were transformed (log10) and analyzed using ANOVA (alpha=0.05) and Waller-Duncan k-ratio t-test (k=100). Data for copper spot 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 log10 or 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. 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. Weather was moderately favorable for dollar spot activity during the test period, and disease pressure was moderate throughout the test. Most treatments provided acceptable control of dollar spot for most of the duration of the test, with the exception of Renown at low rate sprayed on a 3 wk interval, as well as Disarm and DPX-LEM 17-50-76 when disease pressure was highest. Copper spot was detected on 8 Jul in one plot but was not distributed throughout the test area until early Aug. Most treatments provided acceptable control of copper spot, with the exception of DPX-LEM 17-50-76. 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. 2011. Efficacy of fungicides for control of dollar spot of creeping bentgrass on a sand-based green, 2010. PDMR: Plant Dis. Manage. Rep. 5:p. T023. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2011/T023.pdf
Last checked: 11/14/2016
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Access conditions: Item is within a limited-access website |
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