Perspectivas econômicas da irrigação suplementar na produção de soja e milho em cinco municípios do oeste paranaense - Brasil.

Abstract

The production of soybeans and corns has great importance in the economic scenario of the region west of Paraná, however, the frustrations of crop are frequently due to climate instability, in particular the low volume or uneven distribution of rainfall during the culture cycle. The supplemental irrigation is an alternative to maintaining and increasing productivity in several regions of the country, however, are few initiatives in western Parana, even with abundance of water in the reservoir of Itaipu. In this context, this study aimed to evaluate the efficiency of the current model of agricultural production, as well as the economic viability of irrigation use in the production of grains in the western municipalities of Paraná, using documentary research and application of deterministic methods IRR, NPV and VEUA. It found a dependency relationship between rainfall and productivity, resulting in low efficiency of the current production model, where the seven seasons of the series analyzed, three have productivity levels below 50% in the five boroughs. In the analysis of economic feasibility of using supplemental irrigation in different scenarios designed, the results indicate that the use of irrigation in the production of annual crops is financially viable in the rural properties of the region West. Paraná; the return on investment is about 18% per year.