Agricultural Economics Department


Date of this Version



Agricultural Economics 48 (2017) 143–152


Copyright 2017 International Association of Agricultural Economists

This document is a U.S. government work and is not subject to copyright in the United States.

DOI: 10.1111/agec.12321


The economic cost of achieving desired environmental outcomes from uniform and variable rate fertilizer application technologies depends both on market forces and agronomic properties. Using spatial econometric methods, we analyze the impact of nitrogen fertilizer supply by terrain attribute on the yield and protein content of hard red spring wheat grown in EasternWashington as well as the impact on residual nitrogen.We find significant association with all three. The economic impact of nitrogen restrictions depends critically on both prices and level of the restriction. Uniform application of nitrogen was found to economically outperform variable rate application, but variable rate application provided positive environmental benefits due to less residual nitrogen.