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New model for sustainable management of pressurized irrigation networks. Application to Bembézar MD irrigation district (Spain)

Carrillo Cobo, M.T., Camacho Poyato, E., Montesinos, P., Rodríguez Díaz, J.A.
The Science of the total environment 2014 v.473-474 pp. 1-8
agricultural industry, algorithms, crop yield, economic factors, energy, farmers, greenhouse gas emissions, greenhouse gases, irrigation management, irrigation systems, methodology, models, profits and margins, Spain
Pressurized irrigation networks require large amounts of energy for their operation which are linked to significant greenhouse gas (GHG) emissions. In recent years, several management strategies have been developed to reduce energy consumption in the agricultural sector. One strategy is the reduction of the water supplied for irrigation but implies a reduction in crop yields and farmer's profits.In this work, a new methodology is developed for sustainable management of irrigation networks considering environmental and economic criteria. The multiobjective non-dominated Sorting Genetic Algorithm (NSGA II) has been selected to obtain the optimum irrigation pattern that would reduce GHG emissions and increase profits. This methodology has been applied to Bembézar Margen Derecha (BMD) irrigation district (Spain).Irrigation patterns that reduce GHG emissions or increase actual profits are obtained. The best irritation pattern reduces the current GHG emissions in 8.56% with increases the actual profits in 14.56%. Thus, these results confirm that simultaneous improvements in environmental and economic factors are possible.