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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2011/T010.pdf
Last checked: 11/11/2016
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| Publication Type:
| Report |
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| Author(s): | Soika, M. D.;
Ma, B.;
Tredway, L. P. |
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| Author Affiliation: | Department of Plant Pathology, North Carolina State University, Raleigh, NC |
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| Title: | Dollar spot control resulting from spring treatments applied for fairy ring prevention, 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. T010. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Boscalid + Pyraclostrobin; Dollar spot; Fairy rings; Flutolanil; Fungicide evaluation; Fungus control; Sclerotinia homoeocarpa; Triadimefon; Triticonazole
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| Trade Names: | Bayleton Flo; Triton Flo; Prostar; Trinity; Honor |
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| Abstract/Contents: | "This trial was established to evaluate fungicides for fairy ring prevention. Although no fairy ring symptoms were observed in the area in 2010, significant differences in the dollar spot control afforded by these treatments were observed. The experiment was conducted at the Lake Wheeler Turfgrass Field Laboratory in Raleigh, NC on creeping bentgrass maintained under golf course putting green conditions. Mowing was performed five times weekly at a height of 0.140 in. (15 Jan to 28 Mar), 0.180 in. (29 Mar to 8 Jun), and 0.156 in. (after 8 Jun) with clippings collected. The site was irrigated to prevent drought stress. Fertilizer was applied as 15-15-15 on 15 Jan (0.3 lb N/1000 sq ft), 20-0-10 on 19 Jan (0.16 lb N/1000 sq ft), 14-2-14 on 9 Mar (0.25 lb N/1000 sq ft), 18-3-6 on 1 Apr (0.125 lb N/1000 sq ft), 18-9-18 on 15 and 29 Apr (0.33 and 0.75 lb N/1000 sq ft, respectively), and 18-3-6 (0.1 lb N/1000 sq ft) on 21 May and 3 Jun. Micronutrients were applied as Brexil Multi (1.0 oz/1000 sq ft) on 9 Mar. Insect pests were suppressed with Acelepryn (4.0 fl oz/A) on 22 Apr. Fungicides were applied as Tourney 50WG (0.37 oz/1000 sq ft) on 8 Feb and Emerald 70WG (0.18 oz/1000 sq ft) on 9 Mar. Cascade wetting agent was applied on 2 Apr and 3 May at 8.0 fl oz/1000 sq ft and on 9 Jun, 5 Jul, and 9 Aug at 4.0 fl oz/1000 sq ft. Plots were 5 ft x 10 ft and were arranged in a randomized complete block with four replications. All treatments were initiated on 12 Apr and reapplied at the appropriate interval as indicated in the table. Fungicides were applied in water equivalent to 2 gal per 1000 sq ft with a CO2-powered sprayer at 40 psi using DG TeeJet 8004 nozzles. The study was irrigated approximately 10 hr post application with 0.1 to 0.2-in water to move the active ingredients into the thatch and soil profile. Fairy ring symptoms did not develop in the study area during 2010. Dollar spot incidence was evaluated by counting the number of infection centers per plot on 10 and 24 May, 7 and 22 Jun, and 7 and 21 Jul. Turfgrass quality was evaluated on 12 and 26 Apr, 10 and 25 May, 7 and 21 Jun, and 6 and 20 Jul, using a 1 to 9 scale (9=best, 5=acceptable) based on color, density, and uniformity. Data were subjected to analysis of variance and means separation by Waller-Duncan k-ratio t-test (k=100). Dollar spot incidence was high from early May through July, and even though no fungicide treatments were applied after 10 May, certain treatments provided significant dollar spot suppression into June and July. Most notably, Honor provided excellent dollar spot control through 21 Jul, or 72 days after application E. Triton Flo and the alternation of Bayleton and Triton Flo provided significant disease suppression through 22 Jun. Trinity and the Bayleton-ProStar alternation were ineffective after 24 May and 10 May, respectively. Compared to the untreated control, Triton Flo and the Bayleton-Triton Flo alternation improved turf quality on three of eight rating dates. Honor provided the best turf quality in the study, improving quality in five of eight evaluations. No phytotoxicity was observed during this study." |
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| Language: | English |
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| References: | 0 |
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| See Also: | Other items relating to: Fairy Rings |
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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):
Soika, M. D., B. Ma, and L. P. Tredway. 2011. Dollar spot control resulting from spring treatments applied for fairy ring prevention, 2010. PDMR: Plant Dis. Manage. Rep. 5:p. T010. |
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https://www.plantmanagementnetwork.org/pub/trial/PDMR/reports/2011/T010.pdf
Last checked: 11/11/2016
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Access conditions: Item is within a limited-access website |
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