Lajili-Ghezal, LamiaStambouli, TalelWeslati, MarwaSouissi, Asma2015-05-042015-05-042014-09Lajili-Ghezal, L., Stambouli, T., Weslati, M., & Souissi, A. (2014). Virtual water and food security in Tunisian semi-arid region. Agriculture, Forestry and Fisheries, 3(5), 341-345. doi:10.11648/j.aff.20140305.122328-5648http://hdl.handle.net/10625/54114This study evaluates the strategic importance of gray water, which is a component of virtual water, defined as “the water embedded in key water-intensive commodities such as wheat” or “the water required for the production of commodities.” Estimation of gray water plays a role in ensuring water and water-dependent food security for both importing and exporting countries. Methodologies towards reducing virtual water for strategic crops in the Tunisian semi-arid region include irrigation techniques and the control of runoff. Resources management practices that improve family income especially for women and children, all contribute to food security.Text1 digital file (p. 341-345)application/pdfenGRAY WATERWATER MANAGEMENTWATER CONSERVATIONMATHEMATICAL MODELSSEMIARID ZONECROPSJournal Article (peer-reviewed)