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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2007.97.7.S1#page=78
Last checked: 10/20/2015
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Mitkowski, N. A,;
Madeiras, A. M. |
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| Author Affiliation: | University of Rhode Island |
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| Title: | Fungicide susceptibility of Colletotrichum graminicola isolated from turfgrasses in Southern New England |
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| Meeting Info.: | APS Annual Meeting, San Diego, California: July 28 - August 1, 2007 |
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| Source: | Phytopathology. Vol. 97, No. 7, July Supplement 2007, p. S78. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Fungicide resistance; Colletotrichum graminicola; Anthracnose; Azoxystrobin; Chlorothalonil; Iprodione; Polyoxins; Thiophanate-methyl; Triadimefon; Fosetyl Al
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| Abstract/Contents: | "Colletotrichum graminicola, the cause of anthracnose in amenity grasses, has emerged in the past decade as a serious turf pathogen. Fungicide resistance in this species has been reported in the eastern United States. Research was undertaken to examine the temporal development of fungicide resistance in C. graminicola. Twenty-seven isolates of C. graminicola were screened for suscepibility to eight different fungicides. Tested isolates were collected from golf courses in the Northeast in 1993 and 1995 and have been continuously refridgerated at the University of Rhode Island. Isolates were cultured on half-strength PDA amended with commerical formulations of azoxystrobin, chlorothalonil, fludioxinil, iprodione, polyoxin-D, thiophanate methyl, triadimefon, or fosetyl-A1 in concentrations ranging from 0 to 1024 ppm. After four days incubation in the dark at 21°C, colony diameter was measured. EC50 and EC90 values were determined by probit analysis. Several isolates demonstrated significant resistance to thiophanate methyl. Some resistance to chlorothalonil and iprodione was also observed. These results indicate that C. graminicola began to develop fungicide resistance as many as 14 years ago. These results also suggest that the presence of resistant strains of C. graminicola may decrease the efficacy of thiophanate methyl, chlorothalonil, and iprodione for anthracnose management." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mitkowski, N. A., and A. M. Madeiras. 2007. Fungicide susceptibility of Colletotrichum graminicola isolated from turfgrasses in Southern New England. Phytopathology. 97(7):p. S78. |
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| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2007.97.7.S1#page=78
Last checked: 10/20/2015
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2219736a |
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