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CORVALLIS - Mary Powelson, a professor of botany and plant pathology at Oregon State University, has been elected a fellow of the American Phytopathological Society.

Powelson, an expert on the plant diseases that can affect potatoes and other vegetable crops, is one of only eight scientists to be honored as a fellow by this professional organization in 1998. She received her doctorate from OSU in 1972 and has been on the faculty since that time.