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| Publication Type:
| Report |
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| Author(s): | Dernoeden, P. H.;
Feng, Y.;
Krouse, J. M. |
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| Author Affiliation: | Department of Agronomy, University of Maryland |
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| Title: | Brown patch control with bayleton, lynx, and prostar, 1996 |
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| Source: | Fungicide and Nematicide Tests. Vol. 52, 1997, p. 358. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 1 |
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| Abstract/Contents: | "Fungicides were applied with a CO² pressurized (34 psi) sprayer equipped with a flat-fan (8010) nozzle, and calibrated to deliver 2.5 gal water per 1000 sq ft. Treatments were applied on 14, 21 or 28 day intervals on the dates footnoted in the data table. Soil was a Chillum silt loam with a pH of 6.4 and 3.4% OM. Turf was mowed to a height of 0.60 inches, and was fertilized with 2.0 lb N/1000 sq ft/yr in the fall. Plots were 5 ft x 5 ft, and were arranged in a randomized complete block with four replications. Percent of plot area blighted was assessed visually on a linear 0 to 100% scale where 0=entire plot area green and healthy, and 100=entire plot area blighted. Ratings exceeding 2% blight would be considered unacceptable for golf course greens and tees. Disease pressure was moderate in Jun, but severe in Jul. Bayleton 25DF applied alone (0.5 and 0.75 oz) provided unacceptable brown patch control on all dates except 17 Jun. The Bayleton + Thalonil tank-mix only provided acceptable disease control on 3 of 8 rating dates. There were no significant differences among all other treatments between 17 Jun and 22 Jul. During this period, however, there were several dates when the following treatments had provided unacceptable control: Bayleton + Thalonil 90DG (24 Jun, and 8 and 22 Jul); ProStar (2.0 oz on 21 day interval on 1 and 8 Jul); ProStar (3.0 oz on 28 day interval on 8 Jul); and Lynx 250EW (1 Jul). Except for plots-treated with Bayleton alone or Bayleton + Thalonil, there were no significant differences in brown patch reduction among treatments. Subjectively, on 29 Jul (i.e., at least 21 days since most treatments were last applied) the following treatments maintained good to excellent disease control: Lynx 25DF (1.0 oz); Lynx 250EW; Bayleton 25DF + ProStar; Bayleton + Heritage; ProStar + Bayleton 50W (3.0 + 0.75 oz); and ProStar (2.0 and 3.0 oz). Exceptional control (i.e.,)% blighting) was provided on all dates by Bayleton + Heritage. Good to excellent control was provided by Lynx 25DF (1.0 oz); Lynx 250EW (0.75 fl. oz); Bayleton 25DF + ProStar; ProStar + Bayleton 50W (3.0 + 0.75 oz); and ProStar (3.0 oz)." |
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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):
Dernoeden, P. H., Y. Feng, and J. M. Krouse. 1997. Brown patch control with bayleton, lynx, and prostar, 1996. Fungicide Nematicide Tests. 52:p. 358. |
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MSU catalog number: SB 951.3 .F82 |
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