%0 Journal Article
%T Nitrogen Interactions with Phosphorus and Potassium for Optimum Crop Yield, Nitrogen Use Effectiveness, and Environmental Stewardship
%A Noble R. Usherwood
%A William I. Segars
%J The Scientific World Journal
%D 2001
%I 
%R 10.1100/tsw.2001.97
%U http://dx.doi.org/10.1100/tsw.2001.97