This study was conducted to evaluate the economic and energetic viability of the third season of common bean under irrigation depths in the northwestern region of Parana. The experiment was established with six irrigation levels and four replications in a randomized block design. The bean crop was not economically viable without irrigation. Operating profit increased with increasing irrigation depths, reaching a total operating profit of R$ 1,427.24 ha-1 by 333 mm irrigation depth. The equilibrium price without irrigation was R$ 134.06 and R$ 152.65 bag-1, short and long term, respectively. The irrigation favored the energy balance extracted (energy/used energy), reaching 1.63 in the application of greater depth (333 mm).
operating cost of production; irrigation management; third season; energy balance
