PhD Soil Science Texas A&M University College Station 1989; Retired after 36 year teaching and research at University. Served as visiting faculty at Cornell University during 1999-2000. Alexander von Humbold fellowship awardee during 2003-2005 at University of Karlsruhe, Germany. Visiting Professor Chinese Academy of Sciences 2016-2017 at CAS Institute of Soil Science Nanjing. Published over 50 research papers in well reputed professional journals. Supervised five PhD theses research and write up, and a large number of MS students' theses.