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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2002.92.6.S1#page=40
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): | Jo, Y.;
Rimelspach, J. W.;
Boehm, M. J. |
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| Author Affiliation: | Department Plant Pathology, The Ohio State University, Columbus, Ohio |
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| Title: | Resistance of Sclerotinia homoeocarpa to thiophanate-methyl and propiconazole in Ohio |
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| Section: | 2002 APS annual meeting abstracts of presentaions
Other records with the "2002 APS annual meeting abstracts of presentaions" Section
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| Meeting Info.: | APS Annual Meeting, July 27-31, 2002, Milwaukee, WI |
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| Source: | Phytopathology. Vol. 92, No. 6, June 2002, p. S40. |
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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; Sclerotinia homoeocarpa; Thiophanate-methyl; Propiconazole; Dollar spot; DMI fungicides
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| Geographic Terms: | Ohio |
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| Abstract/Contents: | "Dollar spot is the most widespread and chronic turfgrass disease on golf courses in Ohio. It is well known that dollar spot fungus (Sclerotinia homoeocarpa) develops resistances to benzimidazole and demethylation inhibitor (DMI) fungicides. Dual resistance to both chemical groups is also reported. Samples included 41 isolates from 36 different golf courses and 37 baseline isolates from the university research field in Ohio. ED50 was determined by in vitro fungal growth on fungicide-amended media with thiophanate-methyl (benzimidazole fungicide family) or propiconazole (DMI fungicide family). ED50 of the baseline population was 0.7 ppm of thiophanate-methyl and 0.008 ppm of propiconazole. It was that 54% of Ohio isolates were resistant to thiophanate-methyl (ED50 > 500 ppm), 29% intermediately resistant to propiconazole (0.05 < ED50 < 0.08 ppm) and 17% strongly resistant to propiconazole (ED50 ā„ .08 ppm). The dual resistance was 2.5 times more common than the single resistance. More than half of the isolates were still sensitive to both or either of the fungicides." |
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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):
Jo, Y., J. W. Rimelspach, and M. J. Boehm. 2002. Resistance of Sclerotinia homoeocarpa to thiophanate-methyl and propiconazole in Ohio. Phytopathology. 92(6):p. S40. |
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| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2002.92.6.S1#page=40
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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