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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2012/T050.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: | Evaluation of granular and foliar fungicides for control of brown patch of tall fescue in Georgia, 2009 |
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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. T050. |
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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 severity; Festuca arundinacea; Foliar uptake; Fungicide evaluation; Fungicide trials; Granular fungicides; Rhizoctonia solani; Turfgrass quality
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| Cultivar Names: | Kentucky 31 |
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| Abstract/Contents: | "A fungicide trial was conducted on an 8-year-old sward of tall fescue cv. "Kentucky 31" grown on a clay loam soil (pH 5.8) at the University of Georgia-Griffin campus, Griffin GA. Fertilizer treatments consisted of 1.0 lb nitrogen (Lesco 24-4-10) per 1000 sq ft applied on 8 Jun and 6 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. Granular formulations were weighed and mixed with sterilized sand prior to application. The fungicide /sand mixture was distributed equally in each replicated plot using a canister with a perforated lid. Liquid treatments were mixed with water and sprayed in 2.0 gal water per 1,000 sq ft with a hand held, CO2-pressured boom sprayer at 30 psi using XR TeeJet 800 2vs nozzles. The application interval was every 21 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 hr 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 received at 3:00 AM after the first 17 days. Visual estimates of disease severity were made using a modified Horsfall-Barratt rating scale (0 to 11, and then transformed to percent disease severity (0=0%, 5=37.5, 11=100%). Data were subjected to analysis of variance, and means were statistically separated using Fisher's protected LSD at α=0.05. Rhizoctonia solani infection progressed rapidly, reaching greater than 32% disease severity by 27 Aug. All treatments suppressed disease 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. Evaluation of granular and foliar fungicides for control of brown patch of tall fescue in Georgia, 2009. PDMR: Plant Dis. Manage. Rep. 6:p. T050. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2012/T050.pdf
Last checked: 11/14/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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