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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/pdmr/volume3/abstracts/t17.asp
Last checked: 04/18/2017
Notes: Report Summary
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2009/T017.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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| Content Type: | Abstract or Summary only |
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| Author(s): | Martínez-Espinoza, A. D.;
Youmans, J. |
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| Author Affiliation: | Department of Plant Pathology, University of Georgia, Griffin, Georgia |
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| Title: | Control of brown patch of tall fescue using fungicides and biofungicides, 2007 |
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| Section: | Turfgrass
Other records with the "Turfgrass" Section
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| Source: | PDMR: Plant Disease Management Reports. Vol. 3, 2009, p. T017. |
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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: Biological fungicides; Disease control; Disease severity; Festuca arundinacea; Fungicide efficacy; Fungicide evaluation; Rhizoctonia blight; Rhizoctonia solani
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| Cultivar Names: | Kentucky 31 |
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| Abstract/Contents: | "A fungicide trial was conducted on a 5-year-old sward of tall fescue cv. 'Kentucky 31' grown on a clay loam soil (pH 5.8) at the Georgia Experiment Station, Griffin, GA. Fertilizer treatments consisted on 1.0 lb nitrogen (Lesco 24-4-10) per 1000 sq ft applied on 7 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. Initial applications were made on 26 Jun 07 in 2.0 gal water per 1000 sq ft with a hand held, CO2-pressured boom sprayer at 30 psi using XR TeeJet 8002vs nozzles. Subsequent applications were made at 14 day intervals. 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. Hot and dry conditions observed during the experiment required us to implement this irrigation schedule. Normal irrigation was received at 3:00 AM after the first 21-days. Visual estimates of disease severity were made using the Horsfall-Barratt rating scale. Data was transformed to percent of disease. For each evaluation date, disease severity was analyzed by ANOVA (α =0.05) and means were statistically separated using Fisher's Protected LSD at a probability value of α = 0.05. Rhizoctonia solani infection progressed rapidly, reaching a peak of greater than 75% disease severity by late August. All treatments had a significant disease suppressive effect for the duration of the study. HeritageTL 1.0 fl oz and Heritage TL 2.0 fl oz significantly suppressed disease symptoms when applied at 14 day interval and were statistically different from the un-treated control. 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 an abstract only!
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Martínez-Espinoza, A. D., and J. Youmans. 2009. Control of brown patch of tall fescue using fungicides and biofungicides, 2007. PDMR: Plant Dis. Manage. Rep. 3:p. T017. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/pdmr/volume3/abstracts/t17.asp
Last checked: 04/18/2017
Notes: Report Summary
https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2009/T017.pdf
Last checked: 11/11/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| Find from within TIC:
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