Bachelor, Blackburn College, 1964. Doctor of Philosophy, Iowa State University, 1969.
Assistant professor University Minnesota, St. Paul, 1972-1976. Associate professor Colorado State University, Fort Collins, 1976-1979. Professor, chairperson University Florida, Gainesville, 1979-1984.
Associate dean College Agricultural Sciences Oregon State University, Corvallis, since 1984. Board directors E.R. Jackman Foundation, Agricultural Research Foundation. Associate director Oregon Agricultural Experiment Station.
Member American Chemical Society, American Society Horticultural Science (Darrow award 1979), American Society Plant Physiologists, American Association for the Advancement of Science, Cryobiology Society.
Married Mary Ellen Mueller, August 4, 1964. Children: Mara Jean, John Edmund.