Agricultural Economics Department


Date of this Version

August 1999


Selected Paper, American Agricultural Economics Association Meetings, Nashville, Tennessee, August 8-11, 1999. Copyright 1999 by Saleem Shaik and Richard K. Perrin. Used by permission.


This paper addresses the role of non-parametric analysis in adjusting agricultural productivity measures for environmental impacts. The modified Tornquist-Theil index computed using shadow prices derived from the programming procedures is compared and contrasted with a nonparametric hyperbolic Malmquist index for the case of Nebraska agriculture.