Agronomist, Institute National Agronomy, Paris, 1975. Doctor of Philosophy, University Montpellier II, 1984.
Agronomist Certificate in Superior Studies, Trivandrum, India, 1976, ISRA-CIRAD, Bambey, Senegal, 1977-1978. Consultant Food and Agriculture Organization, Rome, 1979. Researcher, scientist Institute National Research Agronomy, Montpellier, France, 1980-1993, director research France, since 1993.
Director federative-institute ecosystem International Atomic Energy Agency-FAC, Vienna, since 2006. Consultant United Nations Educational, Paris, 1992, NRI/USDA, Washington, since 1991, Institute for Fiscal Studies Stockholm, since 1993.
Member of Ecologie Microbienne, Association French Microbiologie, Association French Physiologie Végétale.
Married Hassiba Mekbel, May 5, 1981. Children: Elsa, Dorian, Tarik.