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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2003.93.6.S1#page=91
Last checked: 10/16/2015
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): | Wong, F. P. |
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| Author Affiliation: | Department of Plant Pathology, University of California, Riverside, California |
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| Title: | Baseline sensitivity distribution of Colletotrichum graminicola (turfgrass anthracnose) to thiophanate-methyl and detection of resistance in California populations |
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| Meeting Info.: | 2003 APS Annual Meeting, August 9-13, Charlotte, North Carolina |
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| Source: | Phytopathology. Vol. 93, No. 6, June 2003, p. S91. |
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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: Colletotrichum graminicola; Anthracnose; Thiophanate-methyl; Fungicide resistance; Golf greens; Golf fairways; Disease control
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| Geographic Terms: | California |
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| Abstract/Contents: | "Thiophante-methyl [TM] is a benzimidazole fungicide frequently used for the control of turfgrass anthracnose. In 2002, 280 isolates were collected from four golf courses: three greens (exposed sites) and a fairway where fungicides had not been previously applied (baseline site). Sixty isolates from the baseline site were tested using a mycelial expansion assay on 1/4-PDA amended with 0 to 30 mg/l TM at half-log serial dilutions. ED50 values ranged from 0.14 to 2.3 mg/l with a mean value of 0.75 mg/l. Twenty isolates collected from an exposed site did not show a dose response (e.g. ED50 values > 30 mg/l). The remaining isolates were tested at the discriminatory dose of 10 mg/l TM. For the three exposed sites, 95, 93 and 92% of the isolates had more than 80% growth relative to the check plate (RG); 86% of baseline site isolates had 0 to 10% RG, while the remaining 14% had 10 to 30% RG at this discriminatory dose. This is the first report of TM resistance in California for this pathogen and suggests that the viability of future TM use for the control of this pathogen be reexamined." |
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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):
Wong, F. P. 2003. Baseline sensitivity distribution of Colletotrichum graminicola (turfgrass anthracnose) to thiophanate-methyl and detection of resistance in California populations. Phytopathology. 93(6):p. S91. |
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| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2003.93.6.S1#page=91
Last checked: 10/16/2015
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 599 .P48 |
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