B.A. Stewart is a distinguished professor of soil science at the West Texas A&M University, Canyon, Texas. He is also the director of the Dryland Agriculture Institute and a former director of the US Department of Agriculture (USDA) Conservation and Production Laboratory at Bushland, Texas; a past president of the Soil Science Society of America; and a member of the 1990–1993 Committee on Long- Range Soil and Water Policy, National Research Council, National Academy of Sciences. He is a fellow of the Soil Science Society of America, American Society of Agronomy, and Soil and Water Conservation Society and a recipient of the USDA Superior Service Award and the Hugh Hammond Bennett Award of the Soil and Water Conservation Society.