Models of multiple wheat disease epidemics in the great plains of the USA
1992
Eversmeyer, M.G. (Kansas State Univ., Manhattan (USA). Agricultural Research Service. US Dept. of Agriculture. Dept. of Plant Pathology and Division of Biology) | Kramer, C.L.
Preliminary analysis of loss data shows the optimum number of days over which the meteorological data is averaged varied from 7 to 30 days depending on the disease epidemic being analyzed. Meteorological variables from different epidemic dates were important in development of the best model for each disease. Substitution of data for ten days either side of the date did not significantly decrease the amount of variation explained by the factors in the model. Fall time periods were most important in soil-borne and wheat streak mosaic and barley yellow dwarf while late winter and early spring periods were more effective in the rusts and other foliar pathogens. Snow cover did not enter into any of the models as being important in explaining epidemic development of any of the diseases.
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Эту запись предоставил ZB MED Nutrition. Environment. Agriculture