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| Publication Type:
| Report |
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| Author(s): | Grogan, J. E.;
Scott, D. H. |
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| Author Affiliation: | Purdue University, West Lafayette, Indiana |
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| Title: | Evaluation of fungicides for control of natural brown patch in creeping bentgrass, 1996 |
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| Source: | Fungicide and Nematicide Tests. Vol. 52, 1997, p. 349-350. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 2 |
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| Abstract/Contents: | "Fungicide treatments were evaluated at an experimental green on the Purdue University South Golf Course, West Lafayette, IN. The turf area received conventional golf course care and was maintained at a height of 0.25 in. The turf are was fertilized with a total of 4.0 lb N/1000 sq ft/yr. Soil was `sand amended' Miami clay loam with a pH of 7.3. Treatments were applied to 3.3 ft x 6.6 ft plots arranged in a randomized complete block design with 4 replications. A hand held CO²-pressurized sprayer with two 11003 LP flat fan nozzles, spaced 19 in. apart, at 22 psi, and at a rate of 1 gal/1000 sq ft was used for all treatment applications. All treatments were first applied on 18 Jun with additional treatments based on 14-, 21- and 28-day spray intervals. Treatment applications were discontinued after 30 Jul. Percentage of diseased area was estimated for each plot. Cool, wet conditions in the spring were followed by a cool and dry summer. Day-time air temperatures rarely exceeded 90⁰ F; night-time temperatures usually were between 55-65⁰ F. Precipitation was below normal early Jul and in Aug, but all plots were irrigated as needed to prevent drought stress. Brown patch development was first observed on 19 Jul. Disease increased to a high level in a few days, then diminished by 29 Jul. High disease severity was observed again in early and mid Aug. Thirty-eight of 64 treatments consistently suppressed the development of disease below a disease rating of 1.5 (about 2% of the plot area affected) for the entire testing period. Heritage 50WDG, Lynx 250EW and Sentinel 40WG were the best fungicides for control of brown patch in this trial. Tank mixes of Chipco 26019 Flo 2SC 2.0 fl oz + Banner 1.24MC 0.5 oz, Chipco 26019 Flo 2SC 2.0 fl oz + Heritage 50WG 0.2 oz and Sentinel 40WG 0.167 oz + Daconil Ultrex 82.5WDG 3.8 oz provided excellent disease control and improved turf grass quality over the entire testing period. No phytotoxicity was observed." |
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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):
Grogan, J. E., and D. H. Scott. 1997. Evaluation of fungicides for control of natural brown patch in creeping bentgrass, 1996. Fungicide Nematicide Tests. 52:p. 349-350. |
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