A public memorial service will be held at 3:30 p.m. Monday, Feb. 12, in the University Club of the University of California, Davis, for Joseph M. Ogawa, professor emeritus of plant pathology, who died Jan. 20 at a Davis hospital, following a stroke. He was 70. An internationally recognized authority on the diseases of stone-fruit trees, nut crops and tomatoes, Professor Ogawa conducted research and taught at UC Davis for 37 years. He was born in Sanger, Calif. During World War II, he served in the Army and was assigned to the Counter Intelligence Corps until 1946, when he received an honorable discharge. After earning his bachelor's degree in plant science and his doctoral degree in plant pathology from UC Davis, he joined the campus faculty in the plant pathology department in 1954. During his career he was credited with solving numerous difficult production problems confronting California orchardists and tomato growers. He published more than 300 technical papers and popular articles, and co-authored two technical books. He retired from the university in 1991. As an adviser to graduate students, Professor Ogawa guided the research projects of 31 students who were pursuing master's and doctoral degrees. All of his students have gone on to professions on university faculties or at research institutions and industrial companies throughout the world. Professor Ogawa was noted for his enthusiasm for the field of plant pathology and his interest in his students. For 25 years he taught a graduate course on the diseases of fruit, nut and vine crops, consistently receiving high ratings from students and earning a reputation as an outstanding teacher. In the community, he was active in the Cal Aggie Alumni Assoc., Sigma Xi scientific society, Boy Scouts and the Commonwealth Club. He also served as a member of the 1994-95 Yolo County Grand Jury. Professor Ogawa is survived by his wife of 40 years, Margie; two daughters, Julie Morison of Mill Valley, Calif. and JoAnn Ende of Stamford, Conn.; and one son, Martin Ogawa of Mill Valley. He also leaves three grandchildren, four sisters and two brothers. The family requests that any memorial donations be made to the Joseph M. Ogawa Memorial Fund, Department of Plant Pathology, University of California, Davis, 95616.