Comprehensive Evaluation of Phosphorus Best Management Practices

Though soybean yield has continued to increase over recent decades, Illinois’ recommendations on P management for soybean are outdated, with fertilizer often applied only at the start of the two-year corn-soybean rotation. Updating recommendations on the 4Rs (right source, rate, timing, and placement) of P fertilization for soybean will help expand toolbox for
farmers to maintain yield while minimizing environmental impacts.

Yuhei Nakayama, Ph.D. student in the Department of Crop Sciences at the Universityof Illinois at Urbana-Champaign, presented at the Bloomington Better Beans event on January 11, 2023.