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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PDIS.2004.88.10.1146
Last checked: 01/07/2008
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Uddin, W.;
Soika, M. D.;
McNitt, A. S.;
Fidanza, M. |
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| Author Affiliation: | Uddin and Soika: Department of Plant Pathology; McNitt: Department of Crop and Soil Sciences, The Pennsylvania State University, University Park, Pennsylvania; Fidanza: Division of Science, Berks-Lehigh Valley College, The Pennsylvania State University, Reading, Pennsylvania |
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| Title: | Effects of timing of ethofumesate application on severity of gray leaf spot of perennial ryegrass turf |
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| Section: | Research
Other records with the "Research" Section
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| Source: | Plant Disease. Vol. 88, No. 10, October 2004, p. 1146-1152. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Application timing; Ethofumesate; Disease severity; Gray leaf spot; Lolium perenne; Weed control; Disease development; Fungicides
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| Abstract/Contents: | "Ethofumesate is a widely used herbicide for control of annual bluegrass (Poa annua) in perennial ryegrass (Lolium perenne) fairways on golf courses in the United States. Effect of timing of ethofumesate application on development of gray leaf spot was evaluated on perennial ryegrass turf treated with six classes of fungicide. Two applications of ethofumesate (2.28 kg a.i./ha) were made to perennial ryegrass turf maintained at a 2-cm height, at 4-week intervals, each fall (October and November 1999 and 2000) or spring (April and May 2000 and 2001). In addition, turf was treated with the fungicides, azoxystrobin, chlorothalonil, flutolanil, iprodione, propiconazole, or thiophanate-methyl at the label rates at 14-day intervals. There were significant effects (P ā¤ 0.05) of ethofumesate application timing and fungicide regime on gray leaf spot development. There also were significant interactions between the ethofumesate application timing and fungicide. Severity of gray leaf spot was significantly greater in turf plots treated with ethofumesate in spring compared to turf treated in fall or nontreated control plots treated with fungicides, flutolanil, iprodione, and propiconazole that were relatively less effective in control of gray lead spot. There was no significant difference in disease severity in turf treated with ethofumesate in fall or to turf not treated with herbicide regardless of the fungicide used. Results of this study indicate that spring application of ethofumesate contributes to development of gray leaf spot epidemics, and the application timing interacts with the classes of fungicides. This study suggests that ethofumesate should be applied only in fall for control of P. annua, particularly in golf courses with a chronic gray leaf spot problem, as part of an inegrated management of gray leaf spot in perennial ryegrass fairways." |
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| Language: | English |
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| References: | 43 |
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| Note: | Pictures, b/w
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Uddin, W., M. D. Soika, A. S. McNitt, and M. Fidanza. 2004. Effects of timing of ethofumesate application on severity of gray leaf spot of perennial ryegrass turf. Plant Dis. 88(10):p. 1146-1152. |
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| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PDIS.2004.88.10.1146
Last checked: 01/07/2008
Requires: PDF Reader |
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MSU catalog number: SB 599 .P95 |
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