Professor, Dept. of Agronomy, University of Kentucky, 1994-2018

Associate Professor, Dept. of Agronomy, University of Kentucky, 1988-94

Assistant Professor, Dept. of Agronomy, University of Kentucky, 1983-88

Postdoctoral Research Associate, Dept. of Agronomy & Soils, Auburn University, 1982-83

Graduate Research Assistant, Dept. of Agronomy & Soils, Auburn University,1978-82

International Atomic Energy Fellow, Dept. of Agronomy, Univ. of Nebraska-Lincoln, 1976-78

Areas of Interest

1. Using thermodynamic approaches to explain pedogenic processes, mineral weathering, and mineral distribution under different environmental settings.
2. Developing and refining soil mineral quantification methods.
3. Quantifying the role of colloidal soil particles in transporting agrochemicals and heavy metal contaminants to surface and ground water.
4. Improving constructed wetland technology for onsite wastewater and acid mine drainage treatment.
5. Conducting soil survey investigations in support of the Kentucky Cooperative Soil Survey Program

Professional Honors

• Soil Science Society of America Fellow Award, 1999
• American Society of Agronomy Fellow Award, 2000
• J.H.Heick Professor of Soil Science, Dept. of Plant & Soil Sciences, University of Kentucky, 2003-2018
• Fulbright Senior Scholar, University of Thessaloniki, Greece, 2000