Avaliação econômica do milho e feijão em sistema de semeadura direta e convencional em campos dos goytacazes – RJ

Abstract

The objective of this experiment was to evaluate the economical results presented by the cultures of the maize and bean in no-tillage system in comparison to the conventional one in Campos dos Goytacazes – RJ. The economical results of the culture of the maize evidenced the economical inviability of the maize culture not only in the no-tillage system but also in the conventional one, at the current conjuncture of market of this product in Brazil. However, the notillage system has provided the best results. On the other hand, the culture of the bean was shown economically workable, checking profitability, once it has presented a monthly internal return rate and relationship benefit/cost, respectively, of 2,21% and 0,61% and 1,57 and 1,05 so much in no-tillage as in the conventional, respectively. The bean in no-tillage with the use of the green manuring has presented the liquid income, a monthly internal return rate and the relationship benefit/cost, respectively, 1.073, 262 and 50% upper to the cultivation using the conventional preparation of the soil. It can be inferred that the cultivation of the bean in no-tillage reduces total costs and increases the profitability when compared to the conventional preparation of the soil.