Full TGIF Record # 215084
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Web URL(s):http://archive.lib.msu.edu/tic/rpr/2000/72130,%20Texas%20A&M, White, bermuda decline.PDF
    Last checked: 02/11/2012
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Publication Type:
i
Report
Material Type:Manuscript
Monographic Author(s):White, Richard H.; Krausz, Joseph P.; Stanford, Roy; Hall, Mark; Hale, Trent
Author Affiliation:White and Krausz: Co-principle Investigator; Stanford: Graduate Research Assistant; Hall: Research Associate; and Hale: Ag. Research Technician
Monograph Title:Relationship of Environment, Management and Physiology to Bermudagrass Decline: 2000 Progress Report, 2000.
Publishing Information:[College Station, Texas]: Texas Agricultural Experiment Station, Texas A&M University System
# of Pages:12
Collation:[1], 11 pp.
Abstract/Contents:"Bermudagrass decline is a recently described, devastating root disease of highly managed bermudagrass turf, especially turf used for golf greens in the United States. It is caused by an interaction of host-predisposing abiotic stresses and the soil-borne, ectotrophic, root-infecting fungus Gaeumannomyces graminis var. graminis. The objective of this research is to determine the relationship between several environmental, cultural, and physiological factors to the development and cure of bermudagrass decline. Summer fungicide applications did not control bermudagrass decline. The phototoxic effects of several fungicides, due in part to application when summer temperatures were high, may actually have been counterproductive to recovery from bermudagrass decline. Mowing is extremely important in the maintenance of high quality putting surfaces. Decreasing mowing height did not increase bermudagrass decline symptoms. During 2000, symptoms were more severe at 0.188 thant at 0.125 inch. Vertical mowing had a major impact on the expression of bermudagrass decline symptoms and frequent, light vertical mowing during the late-summer was devastating to Champion, Floradwarf, and Miniverde bermudagrass. Routine defoliation and mechanical stress caused by frequent, light vertical mowing increased bermudagrass decline symptoms. Nitrogen nutrition affected bermudagrass decline severity in Champion and Miniverde but decreased severity in Floradwarf bermudagrass. Nitrogen source may also be important in management of bermudagrass decline. An acidifying N source reduced and nearly eliminated symptoms of bermudagrass decline when applied to Floradwarf growing on a golf green with above neutral soil pH. Although we have not documented resistance of bermudagrass to G. graminis var. graminis, we did observe differences in expression of bermudagrass decline symptoms among 15 bermudagrass cultivars. Bermudagrass decline symptoms were less severe in Tifwarf than in several of the newer dwarf bermudagrass cultivars."
Language:English
References:9
See Also:See also related summary article, "Relationship of environment, management, and physiology to bermudagrass decline", 2000 Turfgrass and Environmental Research Summary [USGA], 2000, p. 27, R=72130. R=72130
Note:Also appears as pp. 814-826 in the USGA Turfgrass Research Committee Reporting Binders for 2000
"1 November 2000"
"Jointly Sponsored by: United States Golf Association, Texas Turfgrass Association, and Texas Agricultural Experiment Station"
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http://archive.lib.msu.edu/tic/rpr/2000/72130,%20Texas%20A&M, White, bermuda decline.PDF
    Last checked: 02/11/2012
    Requires: PDF Reader
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