Do Soybeans in Iowa Use More Nitrogen Than They Fix?.
Silvia Carolina Cordova1, Ranae N. Dietzel1, Sotirios V. Archontoulis2 and Michael J. Castellano3, (1)Department of Agronomy, Iowa State University, Ames, IA, (2)Iowa State University, Ames, IA, (3)Iowa State University, Ames, IA, US