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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PDIS.2004.88.9.1017
Last checked: 01/07/2008
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Pfender, W. F. |
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| Author Affiliation: | United States Department of Agriculture - Argicultural Research Service, National Forage Seed Production Research Center, and Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon |
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| Title: | Effect of autumn planting date and stand age on severity of stem rust in seed crops of perennial ryegrass |
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| Section: | Research
Other records with the "Research" Section
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| Source: | Plant Disease. Vol. 88, No. 9, September 2004, p. 1017-1020. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Puccinia graminis subsp. graminis; Lolium perenne; Seeding time; Seed harvesting; Fungicides; Disease control; Seed yield; Disease severity
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| Abstract/Contents: | "Perennial ryegrass (Lolium perenne) grown for seed is planted in autumn for July harvest (first-year seed crop), then kept in production for subsequent yearly harvests. Plots of first-year perennial ryegrass planted in early November had only 3% as much stem rust in June as plots planted in mid-September. In other plots where fungicides were used to prevent rust development, seed yield from the November-planted plots was reduced by 23% compared with September-planted plots. In the second-year seed crop, stem rust severity in June was intermediate between severities in early- and late-planted first-year plots. The association of reduced stem rust severity with late planting for first-year crops was observed for five of six perennial ryegrass cultivars tested. Degree of reduction in disease severity due to planting date was greatest for the cultivars that had the highest disease severity in early-planted stands. Delay of autumn planting date may provide a useful cultural control method for first-year strands of perennial ryegrass seed crops." |
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| Language: | English |
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| References: | 15 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Pfender, W. F. 2004. Effect of autumn planting date and stand age on severity of stem rust in seed crops of perennial ryegrass. Plant Dis. 88(9):p. 1017-1020. |
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| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PDIS.2004.88.9.1017
Last checked: 01/07/2008
Requires: PDF Reader |
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MSU catalog number: SB 599 .P95 |
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