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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.1999.89.6.S1#page=43
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): | Langan, K.;
Olaya, G.;
Tedford, E. |
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| Author Affiliation: | Langan, Olaya, and Tedford: Zeneca Ag Products, Western Research Center, Richmond, California |
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| Title: | Baseline sensitivity distribution of isolates of Pythium aphanidermatum to azoxystrobin |
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| Meeting Info.: | Annual Meeting of the American Phytopathological Society, Montreal, Quebec, August 7-11, 1999 |
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| Source: | Phytopathology. Vol. 89, No. 6, June 1999, p. S43. |
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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: Pythium aphanidermatum; Azoxystrobin; Lolium perenne; Application rates; Disease severity
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| Abstract/Contents: | "Isolates of Pythium aphanidermatum causing Pythium blight of turf were collected from several U.S. golf courses that had no previous exposure to the strobilurin fungicide azoxystrobin. Isolate sensitivity was determined using the following in vivo assay: Perennial ryegrass (Lolium perenne) were sown in 4 × 4 inch pots. Two weeks after planting, turf was sprayed with Heritage (azoxystrobin) at rates of 0.4, 0.133, 0.044, 0.015, 0.005 and 0 oz product/1000 sq. ft. Twenty-four hours after fungicide application, turf was inoculated by placing four P. aphanidermatum colonized ryeberries onto the center of each turf pot. The percentage of turf area infected was measured 5 days after inoculation and ED80 values were calculated. The assay was repeated 4 times for each isolate in order to determine the accuracy of the test. Based on the evaluation of 29 isolates of P. aphanidermatum, the ED80 values (oz. Heritage/1000 sq. ft) relative to the percentage turf area infected ranged from 0.029 to 1.002, with a median value of 0.186. Baseline information will be used as a reference in future resistance monitoring studies." |
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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):
Langan, K., G. Olaya, and E. Tedford. 1999. Baseline sensitivity distribution of isolates of Pythium aphanidermatum to azoxystrobin. Phytopathology. 89(6):p. S43. |
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| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.1999.89.6.S1#page=43
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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