Bachelor of Science, Cornell Univercity, 1957; Doctor of Philosophy, University Wisconsin, 1960.
Assistant professor, Louisiana State University, Baton Rouge, 1960-1963; associate professor, Louisiana State University, 1963-1967; associate professor, U. Kentucky, Lexington, 1967-1971; professor, U. Kentucky, since 1971; chairman plant pathology, U. Kentucky, 1978-1986. Member recombinant DNA advising committee National Institutes of Health, 1984-1987.
Fellow American Phytopathol. Society (Ruth Allen award 1989). Member American Association for the Advancement of Science, International Society Plant Pathology, American Society Virology.
Married Sherrill Sevier, August, 1961. Children— John Sevier, Catherine Sherrill.