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| Web URL(s): | https://www.plantmanagementnetwork.org/pub/trial/fntests/reports/2006/T022.pdf
Last checked: 11/14/2016
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Vincelli, P.;
Dixon, E.;
Williams, D.;
Burrus, P. |
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| Author Affiliation: | Vincelli and Dixon: Department of Plant Pathology; Williams and Burrus: Department of Plant and Soil Sciences, University of Kentucky, Lextington, Kentucky |
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| Title: | Influence of spray programs with phosphite (=phosphonate) fungicides on turf quality in a mixed creeping bentgrass/Poa annua soil-based green, 2005 |
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| Section: | Turfgrass
Other records with the "Turfgrass" Section
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| Source: | F&N Tests. Vol. 61, 2006, p. T022. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Poa annua; Anthracnose; Brown patch; Spraying; Trichlorfon; Quality; Disease severity; Fungicide trials; Application rates; Application timing; Golf greens
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| Cultivar Names: | Penncross |
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| Abstract/Contents: | "The test was conducted on a Maury silt loam located at the University of Kentucky Turf Center near Lexington. The turf was maintained at 0.188-in. mowing height and fertilized with 1.5 lb N/1000 sq ft as urea on 15 Nov 04, and 21 Dec 04. Plots measured 4 ft x 8 ft with 2-ft borders, and were arranged in a randomized complete-block design with three replications. Fungicide sprays were applied using a CO2-pressurized hand-held sprayer fitted with Spraying Systems 8003E flat-fan nozzles delivering 1.5 gal/1000 sq ft. Treatments were first applied on 9 Jun 05, and continued biweekly until 5 Aug 05. At each application, treatments were amended with Plant Marvel 20-20-20 at 0.565 lb/1000 sq ft to apply a level of nitrogen equivalent to the Gary's Green Ultra treatment. Visual estimates of turf quality were taken on several occasions and included deterioration of leaf color and density as well as developing leaf necrosis from several diseases, but excluded damage from dollar spot in the assessments. Selected treatments comparing phosphite-based spray programs were evaluated on more occasions than all other treatments in this trial, in order to compare these treatments as thoroughly as possible. Selected, representative data are provided because of space constraints. The level of infestation by Poa annua was visually estimated 24 May, when color differences between the two grass species and the presence of Poa annua seed heads facilitated discrimination. The percent of Poa annua per plot averaged 40.2 % and did not differ significantly between treatments. Data were analyzed using ANOVA and Waller- Duncan k-ratio t-test, (k=100). Weather was moderately favorable for disease development. There were 33 days with 90°F + temperatures from Jun through Aug, with below normal precipitation. On 7 Jul approximately 50% of the diffuse turf damage in the trial was due to brown patch, 50% anthracnose. No significant differences in turfgrass quality were observed between the Chipco Signature program (using reduced rates of contact fungicides) and plots which substituted generic phosphite fungicides. No phytotoxicity or growth regulator effects were noted inthe trial." |
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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):
Vincelli, P., E. Dixon, D. Williams, and P. Burrus. 2006. Influence of spray programs with phosphite (=phosphonate) fungicides on turf quality in a mixed creeping bentgrass/Poa annua soil-based green, 2005. F&N Tests. 61:p. T022. |
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| Web URL(s):
https://www.plantmanagementnetwork.org/pub/trial/fntests/reports/2006/T022.pdf
Last checked: 11/14/2016
Requires: PDF Reader |
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MSU catalog number: SB 951.3 .F82 |
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