Impactos sócio-econômicos dos investimentos em pesquisa na cultura de mandioca no nordeste

Abstract

It is important for decision markers to measure the socio-economic impact of public investment on research. For this reason, this study deals with the following aspects of adoption of new cassava production system: i) an economic evaluation of public investment made in the generation and diffusion of new technology; ii) distribution of social geturns between producers and consumers of cassava an beans. In this study Lindner & Jarrett model embodying the auto-consumption component of Hayami and Herdt model was used. The elasticities of supply and demand for cassava were astimated by using the unilateral block recursive model. It was observed that the total benefits generated the adoption of new. technology were substantially high. Consumers of cassava and beans were the main beneficials when only Lindner and Jarrett model was applied. However, including the auto-consumption in the model, most on the benefits were gone in favor of producers. The calculated social rate of return of investment always greater than the interest rate charged by the Moment banks, even when the cost of diífusion of new ology is considered. Is was also noted the new mology had higher economic returns as compared to tradicional one.