Shifts in Soybean Yield, Nutrient Uptake, and Stoichiometry: A Historical Synthesis-Analysis.
Dr. Guillermo R. Balboa, PhD, Agronomy, University of Nebraska-Lincoln, Lincoln, NE, US, Victor O. Sadras, South Australian Research and Development Institute, Adelaide, SA, AUSTRALIA and Ignacio A. Ciampitti, Department of Agronomy, Kansas State University, Manhattan, KS