Função de produção da cana-de-açúcar em relação a lâmina de água em Campos dos Goytacazes - RJ.

Abstract

A “Point source” system was installed at Usina Santa Cruz - Fazenda Boa Vista ( Campos dos Goytacazes - RJ) to determine the yield response of sugarcane to applied water. The experiment was carried out in sugarcane field cultivated in concentric rows with a sprinkler installed in the central area.The sugarcane varieties evaluated were: RB72454, RB765418 and SP701011. The results showed that yield response fit well to a polinomial function of second order. The variety RB72454 showed the best fitness and yield response, reaching a maximum estimated yield of 158,0 t/ha in a total of 1583 mm of water applied.