CONTRIBUTION À L’OPTIMISATION DE L’ALLOCATION DES RESSOURCES EN EAU DANS LES SYSTÈMES DE PRODUCTION DU PÉRIMÈTRE PUBLIC IRRIGUÉ DE SIDI BOU ALI (SOUSSE) TUNISIE
CONTRIBUTION TO THE OPTIMIZATION OF THE ALLOCATION WATER RESOURCES IN SYSTEMS PRODUCTION OF IRRIGATED PUBLIC PERIMETER OF SIDI BOU ALI (SOUSSE) TUNISIA

Summary/Abstract: This article aims to contribute to the development of a scheme for optimizing water resources allocation in the irrigated perimeter of Sidi Bou Ali. It is a question ofshowing the interest of a linear multiobjective modeling to explore the management of theunderground water resources in the irrigated surfaces by a control of the resource demand.Based on one hundred socio-economic surveys, the price of irrigation water was perceivedby all the farmers surveyed as a determining factor in farming techniques and farmingmodes. In response to this situation, farmers have opted to change their farming strategies.This has been confirmed by the modeling of the linear multiobjective programming with the"LINDO" software which has proved that following the increase of the price of the irrigationwater, the agricultural income decreases, the expenses of the exploitation increase, theareas exploited in irrigated areas are substituted for the most water-demanding crops bythose that are the least demanding in this resource. 80% of the surveyed sample expressedtheir willingness to abandon irrigated crop systems and their use of dry crops.

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