The objectives were to determine the physical (PFA), economic (PEA) and social (PSA) productivity, as well as the physical (EFA), economic (EEA) and social (ESA) efficiency of water used in the production of pecan nut (Carya illinoensis) and contrast it against apple (Malus domestica) in the state of Chihuahua in 2019, both crops produced under medium technology use (MT) conditions. Models of productivity and water efficiency in the agricultural sector...