BIO: Dr. Robert Mullen is the Director of Agronomy with Potash Corporation of Saskatchewan. Dr. Mullen joined PCS in June of 2011. Prior to joining PCS, he was an Associate Professor of Soil Fertility and Nutrient Management at Ohio State University/Ohio Agricultural Research and Development Center (OARDC). Dr. Mullen received his B.S. in Ag Business at Cameron University in Lawton, Oklahoma in 1998. Dr. Mullen earned his M.S. in Plant and Soil Science and Ph.D. in Soil Science from Oklahoma State University in 2001 and 2003, respectively. Prior to completing his Ph.D. program, Dr. Mullen was employed as an agronomist by NTech Industries Inc. where he worked with sensor-based, site-specific technology across the Great Plains and Western Corn Belt.