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| Publication Type:
| Report |
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| Author(s): | Dernoeden, P. H.;
Krouse, J. M.;
Feng, Y. |
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| Author Affiliation: | Department of Natural Resource Sciences & LA, University of Maryland, College Park, MD |
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| Title: | Brown patch control with Novartis fungicides, 1998 |
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| Source: | Fungicide and Nematicide Tests. Vol. 54, 1999, p. 483. |
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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: Agrostis tenuis; Disease control; Brown patch; Rhizoctonia solani; Fungicide evaluation; Application rates; Application frequency; Disease severity; Color; Fludioxonil; Trinexapac-ethyl; Trifloxystrobin; Propiconazole; Flutolanil; Tank mix
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| Cultivar Names: | Bardot |
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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 1000ft^D]. Treatments were applied on 14 or 21 day intervals on the dates footnoted in the data table. Soil was a Chillum silt loam with a pH of 6.0 and 2.5% OM. Turf was maintained at about 0.60 inches, and was fertilized with 2.0 lb N/1000ft²/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 blighted. Ratings exceeding 2% blight would be considered unacceptable for golf course fairways and tees. Disease pressure was severe by mid-to-late Jun. During the period fungicides were routinely applied (i.e., 20 May to 8 Jul) all treatments generally provided commercially acceptable control (all data not shown). Medallion + Primo lost residual effectiveness by 14 Jul (i.e., 13 days since last applied = DSLA). All other treatments continued to provide acceptable control until 20 Jul, but Compass (0.1 oz; 14-day) and Compass + Banner MAXX broke about 17 Jul (i.e., 16 DSLA). Medallion (0.15 oz) broke 24 Jul (16 DSLA). Except for the 0.15 oz rate, all Compass-treated plots had unacceptable blighting on 24 Jul. All Compass-treated plots, however, had a statistically equivalent level of blighting on 24 Jul. ProStar 70WP (2.25 oz) lost its effectiveness by 29 Jul (i.e., 28 DSLA). All treatments, except Medallion + Primo and Compass + Banner MAXX, suppressed brown patch on 3 Aug, but only ProStar (3.0 oz) continued to provide commercially acceptable control." |
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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., J. M. Krouse, and Y. Feng. 1999. Brown patch control with Novartis fungicides, 1998. Fungicide Nematicide Tests. 54:p. 483. |
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MSU catalog number: SB 951.3 .F82 |
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