Análises multiobjetivo, baseada em programação linear, e comparativas para agriculturas de manejo convencional e orgânico.

Abstract

In worldwide level, a change of humanity’s food matrix is gradually occurring. Because of a higher level of information that society’s receiving, through mass media and academic researches, the consumption of white meat, fruits and vegetables is rising. Also, there is a political-ideological component, in which consumers tend to prefer food that is not produced through infantile labour exploitation, that doesn’t harm the environment while it’s being produced and that, when produced, uses technology of production with low cost, without the usage of agrochemicals (pesticides and chemical fertilizers). The preservation of not renewable natural resources is at the top of the agenda, and sustainability emerges with a great importance. Before this frame, organic agriculture has strengthened, because of modern society’s demand for clean food (without toxic residues), and consequently for nature protection. The present work had the objective of developing a multiobjective comparative analysis of a production system that utilizes conventional management (using agrochemicals – fertilization and pesticides) and of a production system that uses organic management, on Epitácio Pessoa Reservoir (Boqueirão), in the State of Paraíba, through a 10 climatic years scenario. In this work a DSS (Decision Support System) was used with the purpose of applying a multiobjective optimization based on linear programming to crop selection analysis in irrigated areas. It has been shown that agricultural organic management provides better net profit, use of human labor and health and environmental protection than conventional management.