We investigate the pricing of traits in the U.S. corn seed market under imperfect competition. In a multiproduct context, we examine how substitution/complementarity relationships among products can affect pricing. This is used to motivate generalizations of the Herfindahl-Hirschman index...

We investigate selectivity bias in the evaluation of biotech hybrid productivity. The analysis is applied to experimental data on Wisconsin corn yields from 1990 to 2010. Relying on a Heckman-like factor that accounts for selectivity, we find evidence of selection bias, indicating that some of...

Objective – The current biotechnology revolution has been associated with newly developed genetic modifications (GM) that offer new prospects for increasing agricultural productivity. This has stimulated a rapid adoption of GM corn hybrids by U.S. farmers. Yet, there is concern about the...