Teaching Computer-based Diagnosis of Plant Diseases. Ariena H. C. van Bruggen, Assistant Professor, and Deborah A. Neher and Thomas R. Weicht, Former Graduate Research Assistants, Department of Plant Pathology, University of California, Davis 95616. Plant Dis. 75:320. Copyright 1991 American Phytopathological Society. DOI: 10.1094/PD-75-320.