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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2007/T051.pdf
Last checked: 11/14/2016
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Walker, N. R. |
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| Author Affiliation: | Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, Oklahoma |
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| Title: | Evaluation of timing and application frequency of Lynx for the management of spring dead spot of bermudagrass, 2004-2005 |
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| Source: | PDMR: Plant Disease Management Reports. Vol. 1, 2007, p. T051. |
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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: Penconazole; Application timing; Fungus control; Spring dead spot; Cynodon; Disease control; Fungicide trials; Application frequency
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| Abstract/Contents: | "The objective of this study was to determine the effect of the number and time of application of lynx in reducing the severity of spring dead spot of bermudagrass. The study was conducted on Norge clay loam soil with a pH of 6.9, located at the Oklahoma State University Plant Pathology Research Farm, Stillwater, OK. The turf was mowed to a height of 2 in. weekly, irrigated every third day, and fertilized monthly with a split application of 2 lb N/1000 sq ft. Plots were 5 x 5 ft, contained a single large spring dead spot infection center, and were arranged in a randomized design with 4 replications. The fungicide was applied with a CO2 pressurized (40 psi) wheelbarrow sprayer equipped with TX8008 flat-fan nozzles and calibrated to deliver 2 gal/1000 sq ft. Immediately following each application, plots were irrigated with 0.5 in. water. Soil temperatures at a 4-in. depth ranged from 75°F to 66°F with a mean of 71°F and from 82°F to 69°F with a mean of 75°F during spring and autumn applications, respectively. Plants were actively growing during the application dates. Disease severity was periodically evaluated beginning on 29 Apr, 5 May, and 13 May 05 on a scale of 1 to 6, where 1 = no living plants present in patch, 3 = 50% living plants present in patch, and 6 = no evidence of diseased turfgrass. The change in each patch size from the spring of 2004 was determined on 5 May 05. Spring dead spot symptoms were present in all plots in the spring of 2005. Plots treated once in spring and twice in autumn and three or four times in the autumn contained the most living grass inside diseased areas than the non-treated control on 5 and 13 May. Lynx reduced patch size for all treatments compared to the non-treated control. No symptoms of phytotoxicity were observed." |
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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! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Walker, N. R. 2007. Evaluation of timing and application frequency of Lynx for the management of spring dead spot of bermudagrass, 2004-2005. PDMR: Plant Dis. Manage. Rep. 1:p. T051. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2007/T051.pdf
Last checked: 11/14/2016
Requires: PDF Reader |
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