Dispersal of foliar plant pathogens: mechanisms, gradients and spatial patterns

Understanding the nature and scope of the dispersal of plant pathogen propagules is fundamental to the understanding of disease epidemic development. This has been appreciated for many years, and the measurement and modelling of both plant pathogen propagule dispersal and plant disease spread has been a cornerstone of plant disease epidemiology. Work on the diffusion of spore clouds was done as early as 1918 (Schmidt, 1918). Since the classic work of Gregory (1945) there has been much progress in work on dispersal of plant pathogen spores and spread of the diseases they cause. However, there is still much to learn before we can understand and predict the spread of plant diseases in space and time.

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