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My research is focused on understanding and describing plant diseases at the population level and relating disease intensity to crop losses and toxin contamination. I use mathematics and statistics to characterize disease epidemics in time and space with the goal of determining which biological and physical factors best predict: disease outbreaks, invasion, persistence, and the magnitude of disease spread. Previously, I developed approaches for assessing the threat of plant pathogens as bioterrorism weapons against U.S. crops. In the past, I have worked heavily on determining how rainfall affects splash dispersal of fungal spores. This basic work has increased our understanding of how fungal spores move within fields and between fields, and has shown how to better control some economically important diseases.
Throughout my career I have been most interested in how plant diseases behave at the population (field and region) level, and have worked on the epidemiology of many diseases caused by fungi and viruses. I often use statistics and mathematics to represent epidemics and to evaluate control strategies. Besides my research and teaching at Ohio State, I am very active in the national professional organization of plant pathologists, the American Phytopathological Society (APS). Previously I was Editor-in-Chief of the scientific journal Phytopathology, and I served as President of APS from 1996-1997. Through my national activities I am trying to improve public understanding of the impact of plant diseases on food production worldwide, and draw realistic attention to the threat of plant pathogens to U.S. crops.
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PHYTOPATHOLOGY (2024)
PHYTOPATHOLOGYno. 11 (2022): 201-201
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PHYTOPATHOLOGYno. 11 (2022): 18-18
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