Full TGIF Record # 224372
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Author(s):Kaminski, J. E.; Dernoeden, P. H.
Author Affiliation:Department of Natural Resource Sciences & Landscape Architecture, University of Maryland
Title:Incidence and severity of dead spot, pseudothecia development and overwintering in Ophiosphaerella agrostis in creeping bentgrass
Source:Turfgrass Pathology & Weed Science Yearbook of Research Winter 2004. Winter 2004, p. 46.
# of Pages:1
Publishing Information:College Park, Maryland: University of Maryland Department of Natural Resource Sciences and Landscape Architecture
Abstract/Contents:"Dead spot (Ophiosphaerella agrostis) is a relatively new disease of creeping bentgrass (Agrostis stolonifera). The objectives of this research were to determine the peak period of dead spot activity and the ability of O. agrostis to overwinter. Patch diameter of O agrostis infection centers generally increased at a linear rate between mid-June and early August. Pseudothecia production closely followed increasing path diameter. Pseudothecia could be found as early as the first day of symptom expression and as many as 478 pseudothecia were found in a single dead spot. Although new infection centers appeared between late-August and early-October, increases in patch diameter and pseudothecia development were negligible after fumigation with methyl bromide. O. agrostis was capable of overwintering as pseudothecia or as hyphae within or on various bentgrass tissues, especially nodes of stolons. Despite winter survival of the pathogen, disease severity declined dramatically in the second year."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kaminski, J. E., and P. H. Dernoeden. 2004. Incidence and severity of dead spot, pseudothecia development and overwintering in Ophiosphaerella agrostis in creeping bentgrass. Turfgrass Pathol. Weed Sci. Res. Sum. p. 46.
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