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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2012/T045.pdf
Last checked: 11/14/2016
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| Publication Type:
| Report |
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| Author(s): | Martínez-Espinoza, A. D. |
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| Author Affiliation: | Department of Plant Pathology, University of Georgia, Griffin, GA |
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| Title: | Efficacy of fungicides for control of brown patch on tall fescue in Georgia, 2010 |
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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. T045. |
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| Publishing Information: | St. Paul, Minnesota: American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Disease control; Festuca arundinacea; Fungicide efficacy; Fungicide evaluation; Fungicide trials; Rhizoctonia solani
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| Cultivar Names: | Kentucky 31 |
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| Abstract/Contents: | "A fungicide trial was conducted on a 9-yr-old sward of tall fescue cv. "Kentucky 31" grown on a clay loam soil (pH 5.8) at the University of Georgia-Griffin campus. Fertilizer treatments consisted of 1.0 lb nitrogen (Lesco 24-4-10) per 1000 sq ft applied on 7 Jun and 8 Jul. The turfgrass was maintained at a height of 3 in. by mowing once a week. Turfgrass cultural practices were similar to those prescribed for maintenance of tall fescue lawns in Georgia. Treatments were arranged as plots (5 ft x 5 ft) in a randomized complete block design with four replications. Initial applications were applied on 18 May. Granular formulations were weighed and prior to application, mixed with sterilized sand. The fungicide /sand mixture was distributed equally in each replicated plot using a perforated lid canister. Liquid treatments were mixed with water and sprayed in 2.5 gal water per 1000 sq ft with a hand held, CO2-pressured boom sprayer at 30 psi using XR TeeJet 800 2vs nozzles. The application interval was every 28 days. Rhizoctonia solani inoculum was obtained by growing the fungus in a wheat-barley-oats mixture, which was soaked in water overnight and then double sterilized in an Erlenmeyer flask. Turf was inoculated 24 hours after the initial fungicide applications by hand-dispersal of grain infested with R. solani into the foliar canopy. The plots received approximately 0.1 in. of irrigation water 3 times daily (11:00 AM; 3:00 PM and 7:00 PM) for 3 weeks to ensure nightly foliar wetness for infection. Normal irrigation was applied at 3:00 AM after the first 17 days. Visual estimates of disease severity were made using the Horsfall-Barratt rating scale and then translated to % of severity. Values were subjected to analysis of variance and means were statistically separated using Student-Newman-Keuls α=0.05. Rhizoctonia solani infection progressed, reaching 50% disease severity by 30 Jun. All treatments had a significant (α< 0.05) disease suppressive effect for the duration of the study. No phytotoxicity was observed in any of the treatments. Turf quality correlated closely to disease severity." |
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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!
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Martínez-Espinoza, A. D. 2012. Efficacy of fungicides for control of brown patch on tall fescue in Georgia, 2010. PDMR: Plant Dis. Manage. Rep. 6:p. T045. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2012/T045.pdf
Last checked: 11/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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