Abstract
Recent developments in production agriculture have resurrected interest in the primal production approach. This study develops a semi-parametric procedure for estimation of the Zellner production function for a single input.
Notes
1 This represents a slight modification from Zellner's original two variable specification:
2 This nonparametric estimator follows Härdle's (1990) definition of a nonparametric regression estimator. The bivariate Gaussian kernel is similar to the multivariate normal distribution function
3 Using the Zellner production function as the first equation and differentiating the production function with respect to nitrogen to derive the second equation yields