Combining corn N recommendation tools for an improved economical optimal nitrogen rate estimation

Curtis J. Ransom, Newell R. Kitchen, James J. Camberato, Paul R. Carter, Richard B. Ferguson, Fabián G. Fernández, David W. Franzen, Carrie A.M. Laboski, David Brenton Myers, Emerson D. Nafziger, John E. Sawyer, John F. Shanahan