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Web URL(s):https://archive.lib.msu.edu/tic/its/articles/2009jou165.pdf
    Last checked: 10/18/2011
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Publication Type:
i
Refereed
Author(s):Brecht, M.; Stiles, C.; Datnoff, L.
Author Affiliation:Brecht and Stiles: Department of Plant Pathology, University of Florida, Gainesville, Florida; Datnoff: Department of Plant Pathology and Crop Physiology, Louisiana State University, Baton Rouge, Louisiana
Title:Effect of high temperature stress and silicon fertilization on pathogenicity of Bipolaris cynodontis and Curvularia lunata on Floradwarf bermudagrass
Section:Diseases (plant pathology)
Other records with the "Diseases (plant pathology)" Section
Meeting Info.:Santiago, Chile: July 26-30 2009
Source:International Turfgrass Society Research Journal. Vol. 11, No. Part 1, 2009, p. 165-180.
Publishing Information:Madison, WI: International Turfgrass Society
# of Pages:16
Keywords:TIC Keywords: Bipolaris cynodontis; Curvularia lunata; Cynodon dactylon; Golf greens; Heat stress; Silicon; Temperatures; Thinning
Cultivar Names:FloraDwarf
Abstract/Contents:"In Florida and other parts of the southeast region of the United States, many of the new ultradwarf bermudagrass golf putting greens have exhibited a thinning (decline) of turf in patches during the hot and humid periods of summer and fall. Species of Curvularia were isolated frequently from declining turf. Although recent research demonstrated C. lunata was senectopathic while Bipolaris cynodontis was pathogenic on these ultradwarf bermudagrasses, high air temperatures have been shown to be needed for Curvularia blight symptom development on other warm season turf species. Consequently, a study was conducted to further test the ability of C. lunata and B. cynodontis to cause decline-like symptoms on leaves of 'FloraDwarf' after the plants, either fertilized or non-fertilized with silicon, were exposed to heat stress of 40°C for 24 hours. Only B. cynodontis caused leaf spotting and significantly increased leaf chlorosis and necrosis on young leaves, but these symptoms did not mimic the 'decline' symptoms observed on putting greens. Heat stressed plants had significantly higher leaf chlorosis and necrosis than non-stressed leaves. Plants that were fertilized with silicon had decreased leaf damage caused by heat stress or B. cynodontis. Based on these findings, decline is not associated with either species of Curvularia or bipolaris, and silicon may improve turf quality under heat stress conditions in Florida."
Language:English
References:44
See Also:Other items relating to: Summertime Blues
Note:Partial Reprint appears in Carolinas Green, November/December 2009, p. 17
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Brecht, M., C. Stiles, and L. Datnoff. 2009. Effect of high temperature stress and silicon fertilization on pathogenicity of Bipolaris cynodontis and Curvularia lunata on Floradwarf bermudagrass. Int. Turfgrass Soc. Res. J. 11(Part 1):p. 165-180.
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https://archive.lib.msu.edu/tic/its/articles/2009jou165.pdf
    Last checked: 10/18/2011
    Requires: PDF Reader
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