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| Publication Type:
| Report |
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| Author(s): | Dernoeden, P. H.;
Davis, D. B.;
Landschoot, P. J. |
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| Author Affiliation: | Department of Agronomy, University of Maryland |
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| Title: | Brown Patch Control in Perennial Ryegrass and Red Fescue Cover as Influenced by Fungicides, 1987 |
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| Source: | Fungicide and Nematicide Tests. Vol. 43, 1988, p. 282. |
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| Publishing Information: | St. Paul: American Phytopathological Society |
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| Keywords: | TIC Keywords: Lolium Perenne; Festuca rubra var. genuina; Brown patch; Summer patch; Rhizoctonia solani; Fungicides
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| Abstract/Contents: | "Fungicides were applied to a spring, 1987 seeded stand of perennial ryegrass when active R. solani mycelium was observed on lower leaf sheaths, but there was no obvious blighting of foliage. The fungicides were simultaneously applied to an adjacent mature stand of red fescue. Soil was a silt loam with a pH of 7.3 and O. M. 1.7%. Fungicides were applied 5 and 29 Jun 87. Sprayable fungicides were applied with a CO2 pressurized sprayer at 38 psi in 2.5 gal per 1000 ft sq. Granular fungicides were applied with a shaker bottle. Plots were 5 x 5 ft and were arranged in a randomized complete block with four replications. Percent of plot area blighted and red fescue cover were visually determined on a 0 to 100% scale. Ratings exceeding 4.0% plot area blighted by brown patch would be considered unacceptable on golf course fairway turf. Mangaporthe sp. was isolated from roots of the red fescue turf, which exhibited disease symptoms similar to summer patch in Jul. Blighting of ryegrass by R. solani in Bayleton G and untreated plots became severe by 26 Jun. On 3 Jul, only HWG 1608 250 gr/L and 1.2EC (2.5 oz/1000 ft sq) and Chipco 26019 had continued to provide acceptable, residual brown patch control. Red Fescue data collected 17 Jul revelaed that plots treated with Bayleton 25DF (2.0 oz/1000 ft sq) and SN 596 had improved cover when compared to untreated turf. Circular patches of dead turf in the test area concomitant with isolation of Magnaporthe sp. from roots suggested that reduction in cover was due to summer patch disease." |
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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., D. B. Davis, and P. J. Landschoot. 1988. Brown Patch Control in Perennial Ryegrass and Red Fescue Cover as Influenced by Fungicides, 1987. Fungicide Nematicide Tests. 43:p. 282. |
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MSU catalog number: SB 951.3 .F82 |
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