Full TGIF Record # 93183
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Web URL(s):http://archive.lib.msu.edu/tic/ressum/2003/11.pdf
    Last checked: 01/23/2017
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Author(s):Dernoeden, Peter; Kaminski, John
Author Affiliation:University of Maryland
Title:Growth and pathogenicity of Ophiosphaerella agrostis and epidemiology of dead spot, a new pathogen and disease of creeping bentgrass
Section:Integrated turfgrass management
Other records with the "Integrated turfgrass management" Section
Source:2003 Turfgrass and Environmental Research Summary. 2003, p. 11.
Publishing Information:Far Hills, NJ: United States Golf Association
# of Pages:1
Keywords:TIC Keywords: Ophiosphaerella agrostis; Disease profile; Disease development; Agrostis stolonifera
See Also:Other Reports from this USGA research project: 2001-07-205
Note:Pictures, color
USGA Summary Points:Initial dead spot symptoms appear between mid-May and early June and was greatest between late June and early August, but no new infection centers appeared after early October. The pathogen rapidly produces prodigious numbers of ascospores which can germinate within two hours in the presence of bentgrass leaves and roots. During the winter months, the pathogen was commonly isolated from bentgrass crowns, stolons, and roots and from overwintering pseudothecia. All nitrogen fertilizers evaluated in a field study aided in the autumn recovery of bentgrass affected by dead spot. Nitrate- and urea-based N-sources, however, enhanced the recurrence of the disease in the second year of the study. Applications of ammonium sulfate resulted in no new infection centers in the second year Genetic diversity among 78 O. agrostis isolates from various geographic regions currently is being investigated by amplified fragment length polymorphism (AFLP).
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Dernoeden, P., and J. Kaminski. 2003. Growth and pathogenicity of Ophiosphaerella agrostis and epidemiology of dead spot, a new pathogen and disease of creeping bentgrass. Turfgrass Environ. Res. Summ. p. 11.
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    Last checked: 01/23/2017
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MSU catalog number: SB 433 .A1 A6
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