“…These studies used the neoclassical input characteristic model developed by Ladd and Martin (1976), and extended by Melton, Colette, and Willham (1994), to derive the demand for each wheat variety, given varietal characteristics such as agronomic factors, end-use quality, and yield stability. The model assumes that an individual wheat producer maximizes expected profits, E(p), given a normal wheat output distribution Q w ; N(E(Q w ), s 2 ), where Q w is wheat output in bushels, E(Q w ) is the mean, and s 2 the variance.…”