Evaluation of energy balance and environmental effects of sugar beet production system using life cycle assessment technique (Case study: Piranshahr city)

In this study, the values of input energy, output energy, net energy in the production of sugar beet were 67170.9, 1215006 and 1147835 MJ respectively. Fossil fuels, chemical fertilizers and irrigation water accounted for 31.29, 27.76 and 24.91% of the total input energy, respectively. In this study, 0.274, 0.161, 0.00161, 11.80 and 0.00074 kg of each of NH3, N2O, NOX, CO2 and CH4 pollutants were introduced to produce one ton of sugar beet, respectively. In this study, to produce one ton of sugar beet, 0.274, 0.161, 0.00161, 11.80 and 0.00074 kg of each of NH3, N2O, NOX, CO2 and CH4 pollutants, respectively entered the environment. NH3 pollutant has the largest share in the group of the effect of acidity and utrification in the sugar beet production system. In this study, the final index of impact groups including global warming, acidity, depletion of fossil resources and depletion of water resources, depletion of phosphate and potassium resources sugar beet production in Piranshahr region were, 0.01, 0.0013, 0.00049 and 0.60, 0.095, respectively. The final environmental index (EcoX) and the final discharge index (RDI) in the production of this product were equal to 0.0295 and 0.0806, respectively. Conclusion In this study, the impact groups of depletion of water resources and depletion of phosphate resources had the highest potential for environmental damage, respectively, in the form of impact groups of depletion, Therefore, by constructing pressurized irrigation systems with high irrigation efficiency