Full TGIF Record # 30566
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Yuen, G. Y.; Craig, M. L.
Author Affiliation:Department of Plant Pathology, University of Nebraska
Title:Reduction in brown patch severity by a binucleate Rhizoctonia antagonist, 1991
Source:Biological and Cultural Tests for Control of Plant. Vol. 7, 1992, p. 114.
Publishing Information:St. Paul, MN: The American Phytopathological Society
# of Pages:1
Keywords:TIC Keywords: Festuca arundinacea; Brown patch; Rhizoctonia solani
Abstract/Contents:"Binucleate Rhizoctonia sp. (CAG-O) isolate BN-1, provided by L. J. Herr, Ohio State University, was evaluated for control of brown patch disease. The experiment was located on a 'Rebel' tall fescue turf at the University of Nebraska John Seaton Anderson Turfgrass Research Facility, Mead, NE. The turf was fertilized monthly with 0.6 lb actual N per 1000 sq ft maintained at 2.5 in height. During the experiment, the plots were irrigated nightly with approximately 1.5 in of water per week to maintain high leaf moisture. On 31 Jul, BN-1 cultured on sterilized millet seed was applied at a rate of 22 lb per 1000 sq ft. A second application of BN-1-colonized seed was applied to some plots at the same rate on 1 Aug, at which time R. solani grown on sterilized oat seed was inoculated at 20 lb per 1000 sq ft. Some plots were not treated with BN-1 or inoculated with the pathogen. There were four 5 ft by 5 ft replicate plots per treatment. A randomized block design was used. The plots were rated every 2 wk through Sep for brown patch severity. Temperatures were normal in Aug and below normal in Sep. Natural inoculum was present prior to the addition of R. solani, as evidenced by low levels of brown patch (less than 10% of the plots with symptoms) distributed through the experiment. However, disease in noninoculated plots did not exceed 12% on the average throughout the experiment. Highest levels of brown patch were measured on 28 Aug. Subsequently, subnormal temperatures reduced disease development and less than 10% disease prevalence was found in all plots."
Language:English
References:0
Note:Table
This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Yuen, G. Y., and M. L. Craig. 1992. Reduction in brown patch severity by a binucleate Rhizoctonia antagonist, 1991. Biol. Cult. Tests Control Plant Dis. 7:p. 114.
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