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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/pdmr/reports/2007/T033.pdf
Last checked: 11/14/2016
Requires: PDF Reader |
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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, Georgia |
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| Title: | Efficacy of granular and liquid formulations for control of brown patch of tall fescue, 2005 |
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| Source: | PDMR: Plant Disease Management Reports. Vol. 1, 2007, p. T033. |
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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: Foliar versus granular applications; Fungicide trials; Brown patch; Festuca arundinacea; Disease severity; Fungicides
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| Cultivar Names: | Kentucky 31 |
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| Abstract/Contents: | "A fungicide trial was conducted on a 4-year-old sward of tall fescue '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 7 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 in plots (5 ft x 5 ft) in a randomized complete block design with four replications. Initial applications were applied on 14 Jun. Granular fungicides were weighed and at the time of application mixed with sterilized sand which was contained in a lid-perforated canister. The sand and fungicide mixture was distributed evenly throughout the experimental plot. Liquid treatments were mixed with water and sprayed with hand held CO2-pressured boom sprayer at 30 psi in 2 gal/1000 sq ft. Subsequent applications were made at 21-day intervals. Turf was inoculated 12 hr after the initial fungicide application by hand-dispersing a wheat-barley-oats grain mixture infested with Rhizoctonia solani into the foliar canopy. The plots were irrigated 3 times daily for three wk (1100, 1500, and 1900 hr) for a total of 0.1 in. of water to ensure nightly foliar wetness for infection. Normal irrigation was received after these three wk at 0300 hr. Visual estimates of disease severity were made using the modified Horsfall- Barratt rating scale. Values were subjected to analysis of variance and means were statistically separated using the Scott-Knott cluster analysis procedure at a probability value of P= 0.05. Turf blighting progressed rapidly, reaching a peak >77% disease severity by Jul 20. All treatments suppressed disease severity for the duration of the study except for Bayer Advanced Fungus Control, Immunox Lawn Control, and Scott Lawn Fungus. Azoxystrobin H&G 0.38 fl oz and 0.77 fl oz, Azoxystrobin H&G 0.38 fl oz + Banner MAXX 2.0 lb, Azoxystrobin H&G 0.77 fl oz + Banner MAXX, 4.0fl oz, and A14914B G 2.0 lb and 4.0 lb provided significant (αA< 0.05) disease control. A14914A at 2.0 and 4.0 lb; and A14913A at4.0 lb provided acceptable control of the disease." |
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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. 2007. Efficacy of granular and liquid formulations for control of brown patch of tall fescue, 2005. PDMR: Plant Dis. Manage. Rep. 1:p. T033. |
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Last checked: 11/14/2016
Requires: PDF Reader |
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