The Alberta Wheat and Barley Commissions wanted a tool to help growers understand possible economic returns of various nitrogen (N) fertilizer and crop prices. This N Rate Calculator, developed by Rigas Karamanos, Ph.D., P.Ag., FCSA, for spring wheat and feed barley can be used to evaluate different net return per acre scenarios which compare different N sources and costs, various crop prices and soil test N levels (nitrate-N in lb/ac to 24").