VIEW ARTICLE

Letter to the Editor: Is the Concept of Short Retention Times for Aphid-Borne Nonpersistent Plant Viruses Sound? R. J. Zeyen, professor, Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108 and P. H. Berger, assistant professor, Department of Plant, Soil and Entomological Sciences, University of Idaho, Moscow 83843. Phytopathology 80:769-771.