Bill Johnson received a BS degree in Agricultural Science from Western Illinois University, and MS and PhD degrees in Weed Science from the University of Arkansas. Dr. Johnson served as an Assistant Professor of Agronomy and Extension Weed Specialist at the University of Missouri until joining Purdue University in 2002. His current areas of emphasis in research and extension include the biology and management of glyphosate-resistant weeds and interactions between winter annual weeds and soybean cyst nematode. In addition to his research and extension responsibilities, Dr. Johnson teaches the senior seminar in plant sciences course for undergraduates in the Botany and Plant Pathology Department, and team teaches an advanced weed biology course with his colleagues at Purdue University.
