The United States is a large net exporter of corn seeds. Seed trade, including corn, has been expanding but its determinants are not well understood. This paper econometrically investigates the determinants of world demand for U.S. corn seeds with a detailed analysis of trade costs impeding...

We experimentally investigate the distribution of children's time preferences along gender and racial lines. Black boys have significantly larger discount rates than any other demographic group. Discount rates among Black girls are comparable to rates among White girls. Although White boys...

The welfare effects of GM (genetic modification)-led productivity growth for cassava producers are partly affected by the characteristics of individual cassava producing households. Those household characteristics include the elasticity of production and home consumption of cassava. Some studies...

Replaced with revised version of paper 07/15/08.

This study determines how production and trade policy distortions affected rice productivity in thirty-three rice-producing countries. A rice-productivity index for each country is constructed, and a model linking the productivity gap with policy distortions is presented. After controlling for...

Biomass yield to nitrogen response functions were determined for four perennial grass species. The species, nitrogen level, and harvest frequency that maximize expected net returns given the climate and soils of the U.S. Southern Plains were determined. For most combinations of biomass and...

In this paper, we examine the impact of reductions in barriers to migration on the consumption of rural households in China. We find that increased migration from rural villages leads to significant increases in consumption per capita, and that this effect is stronger for poorer households...

Replaced with revised version of paper 07/18/08.

This paper develops a model of optimal allocation of GM and non-GM crops under contamination risk. The model is used to compare the producer optimal crop allocation at equilibrium to the social efficient crop allocation. From the socially optimum conditions, the paper identifies production...