Fraj Chemak is a Senior Researcher, member of the rural economics departement of the National Institute for Agricultural Research of Tunisia (INRAT). As agriculture economists, his interested field involves microeconomics analysis, farming system analysis, farm modeling and economical performance analysis. He is interested particularly in natural resources mangement at the farm level mainly water and land use. He collobarated within the frame of several mutidisciplinary projects by leading researchs on socioeconomic aspects regarding the issues in terms of technology transfer and adoption, water use efficiency and environment preservation.