Chapter 13. J. C. Zadoks, P. Kampmeijer. 1977. The role of crop populations and their deployment illustrated by means of a simulator, EPIMUL76. Pages 164-190. In: Peter R. Day (editor). The Genetic Basis of Epidemics in Agriculture. Annals of the New York Academy of Sciences No. 287. The New York Academy of Sciences, New York, New York, 400 pages.

Keywords: the hot population, mathematical models, plant pathogen spread and dispersal, definitions, the broom feature, the dimensions of epidemiologic models, inputs and outputs of the model, computer limitations, validation of the model, paralogistic growth of epidemics, logistic growth between fields, focus formation, flattening of disease gradients, formation of daughter foci, multiline effect on focus formulation, dynamic mapping of epidemics, validity of the validation, dynamic map of an epidemic, gradients of disease, displacement of the epidemic front, Phytophthora infestans, Puccinia striiformis, Helminthosporium maydis, Peronospora tabacina, Uncinula necator, Lymantria dispar, Leptinotarsa decemlineata, scales of distance, the front of an epidemic, deployment problems, field size, diversity, pathogen mutation, vulnerability and disease management