Planejamento de padrão de cultivo em agricultura irrigada. Parte 1: modelo de programação linear.

Abstract

Linear programming models are powerful tools to support periodic or initial planning, in which restrictions on important factors to the production process must be considered. An alternative for obtaining technical coefficients required on linear programming models is the use of computer simulation models, what implicates on considerable saving of time and financial resources. The purpose of this paper was to develop a linear programming model for optimization of financial return and water use, at farm level in the Jaiba Project, MG, for a planning horizon of four years, employing data of irrigation requirement and yield obtained from application of the simulation model MCID. The used linear programming model pointed out a cropping pattern for which was obtained a total net present value equal to R$ 372.723,00, for the period of four years. Constraints on monthly water availability, labor, land and production were critical in the optimal solution. In relation to optimization of water use, it was verified that expressive reductions in the irrigation requirement can be obtained with little reductions in the maximum net present value.