Systemic Fungicides: A Perspective After 10 Years. L. V. Edgington, University of Guelph, Ontario, Canada. R. A. Martin, G. C. Bruin, and I. M. Parsons, University of Guelph, Ontario, Canada. Plant Dis. 64:19. Copyright 1980 American Phytopathological Society. DOI: 10.1094/PD-64-19.