Bachelor of Science in Soil Science, California Polytech. State University, San Luis Obispo, 1979; Master of Science in Agronomy, Colorado State University, 1982; Doctor of Philosophy in Soil Science Fertility and Plant Nutrition, Oklahoma State University, 1985.
Research assistant department agronomy, Colorado State University, Fort Collins, 1979-1982; technician department agronomy, Colorado State University, Fort Collins, 1982; teaching assistant department agronomy, Oklahoma State University, Stillwater, 1982-1986; from assistant professor to associate professor, soil scientist, Montana State University, Bozeman, since 1986; interim head department plant, soil and environmental science, Montana State University, Bozeman, since 1994.
