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A: asignada a las cantidades dedicadas a satisfacer la demanda interior comunitaria. Cuota B: cantidades que pueden exportarse con restituciones a la exportación. 4 DO L 58 de 28.

This paper aims to determine the minimum agri-environmental premium per hectare that farmers should receive to reduce crop irrigation.To this end, the authors develop a mixed-integer quadratic model using a new methodology based on traditional positive mathematical programming, which allows the inclusion in the model of crop variants that are not present in the baseline situation of the farms.What is shown is that the results obtained with this new methodology, using the cost average approach of calibration, are the same as those obtained with an empirical * Corresponding author. Lucinio Júdez,