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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2007/T050.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 Nature Safe fertilizer for the management of spring dead spot of bermudagrass, 2005-2006 |
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| Source: | PDMR: Plant Disease Management Reports. Vol. 1, 2007, p. T050. |
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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: Fertilizers; Comparisons; Disease control; Spring dead spot; Cynodon; Disease severity
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| Abstract/Contents: | "To determine the efficacy of Nature Safe fertilizer (10-2-8) for the suppression of spring dead spot of bermudagrass turf The study was conducted on clay loam soil with a pH of 7.0, located at Fairfax Golf Club in Edmond, OK. The turf was mowed to a height of 0.5 in. three times weekly, irrigated every third day, and the entire site fertilized on 15 Apr 05 at 1.5 lb N/1000 sq ft. Plots (12 x 25 ft) were established in a randomized complete block design with 4 replications in an area where disease incidence was nearly similar in all plots. Fertilizers were applied using a Gandy drop spreader. Plots treated with Nature Safe fertilizer for the first time on 28 Jul or 30 Aug or with fungicide received an additional 0.5 lb N/1,000 sq ft synthetic fertilizer on 31 May 05. 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 0.3-0.5 in. water. Plants were actively growing during all application dates. Disease severity was evaluated in 2006 and based on a scale of 1 to 6, where 1 = large, well defined dead patches and unsightly turfgrass, 3 = moderately acceptable turfgrass, and 6 = thick, healthy turf with no disease. Spring dead spot symptoms were present in all plots in the spring of 2006. Treatment effects on disease severity were not significant on 10 Apr, 24 Apr, or 22 May. On 1 May, disease severity was lowest for plots treated with Eagle compared to all other treatments except for plots treated with Nature Safe initiated in Aug. On 9 and 15 May, reduced disease severity was evident for Eagle-treated plots when compared to Nature Safe treatments initiated in Jul or Aug or the synthetic fertilizer treatments. These results suggest that organic and synthetic fertilizers were not effective in reducing spring dead spot. No symptoms of phytotoxicity were observed." |
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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):
Walker, N. R. 2007. Evaluation of Nature Safe fertilizer for the management of spring dead spot of bermudagrass, 2005-2006. PDMR: Plant Dis. Manage. Rep. 1:p. T050. |
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Last checked: 11/14/2016
Requires: PDF Reader |
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