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| Web URL(s): | http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume3/abstracts/t58.asp
Last checked: 05/31/2017
Access conditions: Item is within a limited-access website
Notes: Report Summary
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2009/T058.pdf
Last checked: 11/11/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Report |
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| Author(s): | Miller, G. L.;
Soika, M. D.;
Tredway, L. P. |
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| Author Affiliation: | Department of Plant Pathology, North Carolina State University, Raleigh, North Carolina |
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| Title: | Evaluation of spring fungicide applications for preventive control of fairy ring caused by Lycoperdon pusillum on bermudagrass and creeping bentgrass putting greens, 2008 |
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| Source: | PDMR: Plant Disease Management Reports. Vol. 3, 2009, p. T058 [1]-T058 [2]. |
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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; Cynodon dactylon x Cynodon transvaalensis; Disease control; Fairy rings; Fungicide efficacy; Fungicide evaluation; Golf greens; Lycoperdon; Preventive control; Spring maintenance
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| Cultivar Names: | Penn A-1; Tifdwarf |
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| Abstract/Contents: | "Early spring applications of fungicides were evaluated for control of fairy ring caused by Lycoperdon pusillum on bermudagrass and creeping bentgrass putting greens with a history of infestation. The creeping bentgrass trial was conducted on 'Penn A-1' at the Quail Hollow Country Club in Charlotte, NC. The bermudagrass trial was conducted on 'Tifdwarf' bermudagrass at the Wilmington Municipal golf course in Wilmington, NC. Both sites were maintained under normal putting green conditions. Plots were 5 ft x 8 ft and arranged in a randomized complete block with four replications. Fungicides were applied in water equivalent to 2 gal per 1,000 sq ft with a CO2-powered sprayer at 40 psi using TeeJet 8004 nozzles. All treatments were immediately watered-in with 0.25 in. of irrigation applied by hand with a hose and shower nozzle. Treatments were applied twice, on 22 Mar and 18 Apr on the bentgrass site, and on 25 Mar and on 22 Apr on the bermudagrass site. The bentgrass site was mistakenly oversprayed with Heritage TL at 1 oz per 1,000 sq ft on 24 Jun. Disease severity was assessed using a 1 to 9 scale based on % plot area and severity of symptoms (1 to 4=Type II symptoms (green rings), 5 to 9=Type I symptoms (necrotic rings)). Basidiocarp incidence was evaluated by counting the number of puffballs in each plot. Turfgrass quality was evaluated using a 1 to 9 scale (9=best, 5=acceptable) based on color, density, and uniformity. Significant phytotoxic treatment effects were evident on the bentgrass site on 19 May, and rated on a 0 to 9 scale (0=no injury,9 =entire plot severely injured or killed. All data were subjected to analysis of variance (a=0.05) and treatment means were separated with the Waller-Duncan k-ratio t test (k=100). On the bentgrass site, fairy ring symptoms were first observed and most severe in the experimental area in early August, which is later than expected presumably due to the accidental overspray of Heritage in late June. On the bermudagrass site, fairy ring symptoms were first observed and most severe in the experimental area in late June.. At the bentgrass site, preventive treatments of Heritage TL and Endorse did not suppress fairy ring, whereas applications of the DMI fungicides Bayleton, Trinity, Eagle, and Tourney afforded the best control. On the bermudagrass site, Endorse was the only treatment with significant fairy ring occurrence, but symptoms were not evident in plots treated with Heritage TL. At the bentgrass site, puffballs were observed on 12 Jun without turf symptoms, and on 6 Aug with turf symptoms. Puffballs were only observed at the bermudagrass site on 20 Jun. Although not statistically significant on any rating date, puffballs occurred more frequently in treatments that also had significant fairy ring symptoms. Phytotoxicity, evident as a general purpling or off-color symptom, was observed on the bentgrass site on 19 May. Applications of Bayleton induced the most severe phytotoxicity at this time, with Banner MAXX and Tourney applications showing slighter amounts of injury. Phytotoxic symptoms were no longer apparent by 12 Jun. Turfgrass quality at the bermudagrass site was only marginally acceptable for much of the study, presumably due to an underlying nematode infestation. Disease pressure was not severe on either the bentgrass or bermudagrass site, however this study provides strong evidence that early spring applications of DMI fungicides are effective for prevention of fairy ring caused by Lycoperdon pusillum." |
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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: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Miller, G. L., M. D. Soika, and L. P. Tredway. 2009. Evaluation of spring fungicide applications for preventive control of fairy ring caused by Lycoperdon pusillum on bermudagrass and creeping bentgrass putting greens, 2008. PDMR: Plant Dis. Manage. Rep. 3:p. T058 [1]-T058 [2]. |
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| Web URL(s):
http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume3/abstracts/t58.asp
Last checked: 05/31/2017
Access conditions: Item is within a limited-access website
Notes: Report Summary
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2009/T058.pdf
Last checked: 11/11/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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