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| DOI: | 10.2135/cropsci2006.09.0565 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/cs/pdfs/47/3/1206
Last checked: 11/16/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/articles/47/3/1206
Last checked: 11/16/2016
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Horvath, B. J.;
Kravchenko, A. N.;
Robertson, G. P.;
Vargas, J. M. Jr. |
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| Author Affiliation: | Horvath: Department of Plant Pathology, Physiology, and Weed Science, Virginia Polytechnic Institute and State University, Blacksburg, Virginia; Kravchenko and Robertson: Department of Crop and Soil Sciences; Vargas: Department of Plant Pathology, Michigan State University, East Lansing, Michigan |
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| Title: | Geostatical analysis of dollar spot epidemics occurring on a mixed sward of creeping bentgrass and annual bluegrass |
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| Section: | Turfgrass science
Other records with the "Turfgrass science" Section
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| Source: | Crop Science. Vol. 47, No. 3, May/June 2007, p. 1206-1216. |
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| Publishing Information: | Madison, WI: Crop Science Society of America |
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| # of Pages: | 11 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/cs/abstracts/47/3/1206
Last checked: 11/16/2016
Notes: Abstract only |
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| Keywords: | TIC Keywords: Dollar spot; Analysis; Agrostis stolonifera; Poa annua; Disease control; Disease severity; Geographical distribution
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| Abstract/Contents: | "Dollar spot (Sclerotinia homoeocarpa F.T. Bennett) causes one of the most important diseases faced by golf course superintendents throughout the USA. Fungicides are effective, but fungicide resistance and regulation have restricted their use. Site-specific application allows more judicious use of fungicides, but the spatial heterogeneity of dollar spot incidence has been unknown. An intensive study was designed to determine the spatial distribution of dollar spot incidence using geostatistical analysis. Dollar spot foci were manually counted every 2 to 3 d in 200 quadrats in 2000, and in 888 quadrats in 2001 and 2002. Variograms showed spatial aggregation of dollar spot foci on a small scale, and remained stable throughout the growing season despite increasing disease incidence. The range parameter of the variograms was stable within a season, with values ranging between 2.5 and 9.5, 1.3 and 1.9, and 1.2 and 2.2 m in 2000, 2001, and 2002, respectively. Kriged maps of dollar spot incidence also show a stable pattern of spatial aggregation remains throughout the growing season. The locations of dollar spot clusters changed between seasons, but the variograms from each season were similar, further suggesting stability of the spatial structure. It appears that limited secondary dispersal of S. homoeocarpa occurs during epidemics, as evidenced by the stable variograms observed throughout the three growing seasons. The underlying factors involved in the observed stability are unknown." |
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| Language: | English |
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| References: | 50 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Horvath, B. J., A. N. Kravchenko, G. P. Robertson, and J. M. Jr. Vargas. 2007. Geostatical analysis of dollar spot epidemics occurring on a mixed sward of creeping bentgrass and annual bluegrass. Crop Sci. 47(3):p. 1206-1216. |
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| DOI: 10.2135/cropsci2006.09.0565 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/cs/pdfs/47/3/1206
Last checked: 11/16/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/articles/47/3/1206
Last checked: 11/16/2016
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: SB 183 .C7 |
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