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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Sanders, P. L.;
Soika, M. D. |
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| Author Affiliation: | Department of Plant Pathology, The Pennsylvania State University |
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| Title: | Biological control of Pythium blight, 1991 |
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| Source: | Biological and Cultural Tests for Control of Plant. Vol. 7, 1992, p. 113. |
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| Publishing Information: | St. Paul, MN: The American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Lolium perenne; Pythium diseases; Biological control
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| Abstract/Contents: | "This study was conducted at the Landscape Management Research Center, University Park, PA, on a mixture of perennial reygrasses, maintained under home lawn/golf course fairway management conditions. The experimental area was fertilized on 17 May and 6 Jun with 1.0 and 1.5 lbs, respectively, actual N (urea 46-0-0) per 1000 sq ft. Individual treatment plots, 5 ft x 6 ft, were arranged in a randomized complete block design with three replications. To avoid cross-contamination between individual treatments, grass clippings were collected throughout the experiment. Individual strains of the bacterial biocontrol agents, formulated on granular carriers, were hand-scattered from shaker-top jars onto individual plots on 24 Jun. On 8 and 19 Jul, liquid formulations of the individual biocontrol agents were applied undiluted with a CO2-powered boom sprayer, using T-Jet 8004 nozzles, at 30 psi, at a rate equivalent to 2 gal per 1000 sq ft. The fungicide standard (Subdue) and the wettable powder formulation of LT40 were applied on 8 and 19 Jul, as described, in water equivalent to 2 gal per 1000 sq ft. The experimental area was inoculated with a 6-isolate pool of Pythium aphanidermatum on 20 Jul. Following inoculation, the experimental area was enclosed in a 30 ft x 50 ft polyethylene greenhouse to minimize radiational cooling at night. The greenhouse was equipped with intermittent misting to supply continuous high relative humidity. Disease severity was assessed on 26 Jul. Data obtained were subjected to analysis of variance and Duncan's Multiple Range test. Although the bacterial biological control agents that were evaluated in this test have been effective in control of Pythium-incited diseases on other crops, none gave acceptable control of Pythium blight under the conditions of this experiment, even though an attempt was made to protect the infection court by following the application of the granular formulations of the biocontrol agents with two foliar sprays of liquid formulations." |
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| Language: | English |
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| References: | 0 |
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| Note: | Reprint appears in The Keynoter, 19(5) Winter 1992, p. 1
Table
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sanders, P. L., and M. D. Soika. 1992. Biological control of Pythium blight, 1991. Biol. Cult. Tests Control Plant Dis. 7:p. 113. |
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MSU catalog number: SB 975 .B5 |
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