The PROCISUR cooperative research programme is an agreement among Argentina, Brazil, Chile, Bolivia, Paraguay, and Uraguay. This paper analyses its impact in terms of rates of return, based on an analysis of the programme as it affects productivity changes in wheat, maize, and soyabeans in the...

This paper applies the methodology originally developed by Zvi Griliches in his studies of Hybrid Corn technology to the Green Revolution. The Green Revolution in developing countries — i.e., the production and diffusion of "Modern Varieties" (MVs) of crops — had much in common with the...