Viabilidade econômica da irrigação de cana-de-açúcar no cerrado brasileiro

Abstract

This study aimed to evaluate te economic viability of sugarcane irrigation in the Cerrado region in function of perspectives of return associated with different irrigation management: i) full blade (493.56 mm year -1 ); ii) supplement with deficit (50% of water requirement, 235.37 mm year -1 ); iii) rescue (80 mm year -1 ). The total cost of the managements of full irrigation, supplement with deficit and rescue in cane plant stage were 1* US$ 4,955.71 ha -1 , US$ 4,179.61 ha -1 , and US$ 2,712.92 ha -1 , respectively. The indicators analyzed showed that irrigation in sugarcane generates over 30 years of investment in full irrigation management VPL = Recebido em 11/06/2015 e aprovado para publicação em 25/06/2015150 Viabilidade econômica da irrigação... US$ 620.39 ha -1 year -1 , TIR = 61.11%, Payback = 3 years and Ratio B/C = 1.7. In the deficit irrigation VPL = US$ 433.89 ha -1 year -1 , TIR = 52.99%, Payback = 3 years and Ratio B/C = 1.5 and in the rescue irrigation, VPL = US$ 309.46 ha -1 year -1 TIR = 91.48%, Payback = 3 years and B/C = 1.4. The full irrigation presented the highest profitability, followed by irrigation with deficit with profit 30.06% lower, and rescue equipment, with a 50.11% lower profit that full irrigation US$ = R$ 3,18 07/07/2015