Shaun Casteel, Ph.D., is Professor of Agronomy and Extension Soybean Specialist for Purdue University. Dr. Casteel was born and raised on the family farm in east-central Illinois. He earned his B.S. in Crop Sciences at the University of Illinois, his M.S. in Crop Science and his Ph.D. in Soil Science at North Carolina State University. He has given over 850 invited presentations to 60,000 people across the country and world. Key areas of interest include: sulfur synergies, precision management of resources and practices; integration of soil characteristics, nutrient inputs, and crop physiology; and the influence of agronomic practices on yield physiology of soybean. His practical research also extends to field-scale trials with seeding rates, sulfur, biologicals, and intensive management of soybean.  You can follow him on his podcast Purdue Crop Chat and X/Twitter: @PurdueSoybean