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| Web URL(s): | http://www.apsnet.org/publications/plantdisease/backissues/Documents/1991Articles/PlantDisease75n11_1172.PDF
Last checked: 08/25/2010
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Alderman, S. C. |
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| Author Affiliation: | Research Plant Pathologist, United States Department of Agriculture - Agricultural Research Service, National Forage Seed Production Research Center, Corvallis, Oregon |
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| Title: | Spatial pattern of Claviceps purpurea and Gloeotinia temulenta in the Willamette Valley of Oregon |
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| Source: | Plant Disease. Vol. 75, No. 11, November 1991, p. 1172-1175. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| Keywords: | TIC Keywords: Claviceps purpurea; Gloeotinia temulenta; Analysis; Analytical methods
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| Geographic Terms: | Willamette Valley, OR |
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| Abstract/Contents: | Incidence of blind seed, caused by Gloeotinia temulenta, among fields of perennial ryegrass (Lolium perenne) and tall fescue (Festuca arundinacea) grown for seed was determined for three production areas within the Willamette Valley, Oregon, in 1988 and 1989. Incidence in the southern, central, and northern areas of the valley was 32, 21, and 0%, respectively, in 1988 and 15, 7, and 0%, respectively, in 1989. Spatial autocorrelation of blind seed incidence among tall fescue and perennial ryegrass fields in each of the three areas was not detected by means of a join-count technique. Spatial autocorrelation of ergot, caused by Claviceps purpurea, among bentgrass (Agrostis tenuis) and chewing festuca (F. rubra var. commutata) fields grown for seed in the east-central area of the Willamette Valley was not detected in 1988 or 1989. No spatial autocorrelation of ergot incidence was detected in grasses growing as weeds along roadways and field margins throughout the Willamette Valley. Results of this study suggest that assessment of blind seed could be based on random sampling of fields within each of the production areas and that assessment of ergot could be based on random sampling throughout the Willamette Valley. |
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| Language: | English |
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| References: | 19 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Alderman, S. C. 1991. Spatial pattern of Claviceps purpurea and Gloeotinia temulenta in the Willamette Valley of Oregon. Plant Dis. 75(11):p. 1172-1175. |
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| Web URL(s):
http://www.apsnet.org/publications/plantdisease/backissues/Documents/1991Articles/PlantDisease75n11_1172.PDF
Last checked: 08/25/2010
Requires: PDF Reader |
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MSU catalog number: SB 599 .P95 |
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