Expertise in herbicides, weed control, herbicide safety, sustainable agriculture, alternative weed control practices, tillage practices and weed control.
Work includes analysis of water quality issues and public opinion on environmental issues.
Past president of the Association of Structural Pest Control Regulatory Officials. Is secretary for Indiana Pesticide Review Board. The state chemist's office is the lead pesticide regulatory agency in the state. Conducts research on methods of weed control that employ reduced herbicide use, such as ground covers and intercropping, and understanding the biology of weeds. Runs the certified pesticide applicator training program at Purdue.