Johnson et al 10 used a 25 year record of the

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Unformatted text preview: on et al. (10) used a 25-year record of the occurrence of potato late blight in commercial fields to develop a discriminant function relating rain variables and outbreaks of potato late blight in the state of Washington. Similarly, Hennessy et al. (8) employed discriminant analysis to determine how climatic factors (rainfall and minimum and maximum air temperature) influence severity of sorghum leaf blight in South Africa. Noe and Barker (14) used canonical discriminant analysis to determine which edaphic factors contributed the most in delineating three levels of nematode densities (low, medium, and high). Chakraborty et al. (2) characterized and classified pathogenic races of isolates of Colletotrichum gloeosporioides based on disease severity on Stylosanthes scabra, a tropical pasture legume. Workneh et al. (20) defined classes of corky root severity in tomatoes using discriminant analysis to ascertain the distinction among severity classes based on a set of soil and plant variables. In lie...
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