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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Soika, M. D.;
Sanders, P. L. |
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| Author Affiliation: | Department of Plant Pathology, The Pennsylvania State University, University Park, PA 16802 |
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| Title: | Control of Pythium blight with fungicide treatments, 1993 |
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| Source: | Fungicide and Nematicide Tests. Vol. 49, 1994, p. 361. |
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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: Lolium perenne; Pythium diseases; Pythium aphanidermatum; Disease control; Fungicide evaluation; Fungicides
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| Cultivar Names: | Pennfine |
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| Abstract/Contents: | "This evaluation was conducted at the Valentine Turfgrass Research Center, University Park, PA, on perennial ryegrass, maintained under golf course fairway management conditions. The experimental area was fertilized on 3 Jun and 1 Jul with 1 lb nitrogen per 1000 sq ft (urea 46-0-0). Caddy at 1.0 fl oz per 1000 sq ft and Tersan 1991 at 2 oz per 1000 sq ft were applied on 5 Jul to control red thread, pink patch, and Rhizoctonia blight in the experimental area. Individual treatment plots, 3 ft x 15 ft, were arranged in a randomized complete block design with three replications. Treatments were applied on 6 Jul with a CO2-powered boom sprayer, using TeeJet 8004 nozzles, at 30 psi, in water equivalent to 2 gal per 1000 sq ft. Two days after fungicide application (8 Jul), a 3 ft wide strip across all treatments was inoculated with a 4-isolate pool of Pythium aphanidermatum grown on autoclaved rye grain. Following inoculation, the 3-ft wide inoculated strip was covered with PVC pipe-framed, translucent plastic-covered humidity chambers to increase relative humidity and minimize radiational cooling at night. Humidity chambers were equipped with intermittent mist to maintain a saturated atmosphere. Chambers were vented and a 2-minute mist was applied every 20 min during daylight hours. At night, chambers were closed and no mist was applied. After 8 days incubation (16 Jul), the chambers were removed and the inoculated areas were visually rated (10 days after treatment). A second inoculation was made on 16 Jul in the manner described above. Chambers were removed and this inoculation was rated 17 days after treatment (23 Jul). Data were subjected to analysis of variance and Duncan's Multiple Range test. Intense disease pressure was provided by the induced conditions of this experiment. At ten days after fungicide application, good diseae control was provided by Subdue, alone and in combination with Fore. By seventeen days post-treatment, however, only Alliette at the 8 oz rate provided adequate suppression." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract, with table, only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Soika, M. D., and P. L. Sanders. 1994. Control of Pythium blight with fungicide treatments, 1993. Fungicide Nematicide Tests. 49:p. 361. |
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