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| Web URL(s): | http://www.apsnet.org/publications/phytopathology/backissues/Documents/1984Articles/Phyto74n04_448.PDF
Last checked: 08/26/2010
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Danneberger, T. K.;
Vargas, J. M. Jr.;
Jones, A. L. |
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| Author Affiliation: | Dannenberger: Former Graduate Research Assistant; Vargas and Jones: Professors, Department of Botany and Plant Pathology, The Pesticide Research Center, Michigan State University, East Lansing |
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| Title: | A model for weather-based forecasting of anthracnose on annual bluegrass |
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| Section: | Ecology and epidemiology
Other records with the "Ecology and epidemiology" Section
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| Source: | Phytopathology. Vol. 74, No. 4, April 1984, p. 448-451. |
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| Publishing Information: | St. Paul, MN: APS Press |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Anthracnose; Anthracnose severity index; Colletotrichum graminicola; Disease forecasting; Disease severity; Poa annua; Weather forecasting
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| Abstract/Contents: | "A multiple regression equation relating hours of leaf wetness and temperature to the incidence of disease incited in annual bluegrass by Colletotrichum graminicola was developed from 2 yr of field data. The model is ASI=4.0233-0.2283 LW - 0.5308 T - 0.0013 LW2+0.0197 T2+0.0155 (LW x T), in which ASI = anthracnose severity index, T=average daily temperature (C) for a 3-day period 10-12 days preceding symptom expression and LW = average hours of leaf wetness per day for the same period. ASI values of 1, 2, 3, 4, 5 and 6 were equal to < 10, 11-20, 21-30, 31-40, 41-50 and >51% of the turfgrass area diseased, respectively. The accuracy of the model was tested with data from three locations in 1982. The model successfully predicted 14 of 16 periods of disease increase when an ASI value of 2 was taken as the minimum conditions for infection. Average daily ASI values predicted from temperature and leaf wetness data were related to rate of disease increase according to the Gompertz transformation." |
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| Language: | English |
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| References: | 12 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Danneberger, T. K., J. M. Jr. Vargas, and A. L. Jones. 1984. A model for weather-based forecasting of anthracnose on annual bluegrass. Phytopathology. 74(4):p. 448-451. |
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| Web URL(s):
http://www.apsnet.org/publications/phytopathology/backissues/Documents/1984Articles/Phyto74n04_448.PDF
Last checked: 08/26/2010
Requires: PDF Reader |
| 
MSU catalog number: SB 599 .P48 |
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