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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2012/T004.pdf
Last checked: 11/14/2016
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| Publication Type:
| Report |
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| Author(s): | Smith, D. L.;
Walker, N. R. |
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| Author Affiliation: | Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, OK |
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| Title: | Evaluation of fungicides for the management of dollar spot of creeping bentgrass in Oklahoma, 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. T004. |
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| Publishing Information: | St. Paul, Minnesota: American Phytopathological Society |
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| # of Pages: | 1 |
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| Related Web URL: | https://www.plantmanagementnetwork.org/pub/trial/PDMR/volume6/abstracts/T004.asp
Last checked: 03/21/2017
Access conditions: Item is within a limited-access website |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Boscalid; Chlorothalonil; Chlorothalonil + Propiconazole; Dollar spot; Fungicide evaluation; Golf greens; Horticultural oils; Iprodione; Sclerotinia homoeocarpa; Thiophanate-methyl; Trifloxystrobin; Trifloxystrobin + triadimefon; Triticonazole
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| Cultivar Names: | Penncross |
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| Trade Names: | Emerald; 3336 Plus; Interface; Tartan; Reserve; Concert; Iprodione PRO |
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| Abstract/Contents: | "This trial was conducted to evaluate the efficacy of fungicides for the control of dollar spot of creeping bentgrass putting greens in Oklahoma. Plots were established on a creeping bentgrass putting green at the Turfgrass Research Center located in Stillwater, OK. The turfgrass sward was a mature stand of creeping bentgrass established on a USGA sand/peat mix soil. Plots were 3 ft wide and 8 ft long with 1-ft alleys between plots. The experimental design was a randomized complete block with four replicates. Recommended maintenance and irrigation practices were followed throughout the growing season. Fungicide applications were initiated on 18 Apr with subsequent applications applied on a 14-day interval for a total of five applications. Treatments were compared to a standard fungicide program consisting of 3336 Plus 19.4F rotated with Emerald 70WG. A non-fungicide treated control was also included. Fungicides were applied with a CO2-pressurized wheelbarrow sprayer equipped with TX8008 flat fan nozzles and calibrated to deliver 87 gal/A or 2 gal/1,000 sq ft. Ratings of the number of dollar spots and turfgrass quality (scale of 1 - 9 where 1 = no turf present, 5 = unacceptable turfgrass, 6 = acceptable turf, 9 = dense, dark color, thick stand of turfgrass) were taken at 7-day intervals from 18 Apr to 28 Jun. Dollar spot data were subjected to the area under the disease progress curve (AUDPC) transformation to account for season-long ratings. These data and average turf quality data were analyzed using ANOVA (α = 0.05). Multiple comparisons of means were performed using Fisher's test of protected least significant difference (α = 0.05). Weather early in the season was humid, wet, and favorable for dollar spot development. At the initiation of this trial, the dollar spot epidemic was severe. Dollar spot pressure remained high until 21 Jun when the weather turned extremely hot and dry. No further dollar spot development occurred and the trial was terminated on 28 Jun. AUDPC was highest in plots not treated with fungicide. The Civitas treatment provided poor control of dollar spot, with AUDPC being comparable to that found in the non-treated control. Dollar spot levels were lowest in plots treated with the rotation of 3336 Plus and Emerald. All other treatments resulted in dollar spot levels that were significantly higher than the 3336 Plus/Emerald program. Quality was unacceptable in plots treated with Civitas and not treated with fungicide. Highest levels of quality were observed in plots treated with the 3336 Plus/Emerald program or Interface at the high rate. All other fungicide treatments resulted in non-acceptable turfgrass quality. No symptoms of phytotoxicity were observed in this trial." |
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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):
Smith, D. L., and N. R. Walker. 2012. Evaluation of fungicides for the management of dollar spot of creeping bentgrass in Oklahoma, 2011. PDMR: Plant Dis. Manage. Rep. 6:p. T004. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2012/T004.pdf
Last checked: 11/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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