Site specific irrigation [Elektronische Ressource] : improvement of application map and a dynamic steering of modified centre pivot irrigation system / by Aboutaleb Hezarjaribi

FEDERAL AGRICULTURAL RESEARCH CENTRE (FAL) INSTITUTE OF PRODUCTION ENGINEERING AND BUILDING RESEARCH BRAUNSCHWEIG / GERMANY IN COOPERATION WITH JUSTUS LIEBIG UNIVERSITY GIESSEN FACULTY OF AGRICULTURAL SCIENCES, NUTRITIONAL SCIENCES AND ENVIRONMENTAL MANAGEMENT, INSTITUTE OF AGRONOMY AND PLANT BREEDING I, PROFESSORSHIP OF AGRONOMY, GERMANY Site-specific irrigation: Improvement of application map and a dynamic steering of modified centre pivot irrigation system DISSERTATION Submitted for the degree of Doctor of Agricultural Sciences (Dr. agr.) by ABOUTALEB HEZARJARIBI from IRAN ADVISOR: PROF. DR. FRANZ-JOSEF BOCKISCH CO-ADVISOR: PROF. DR. BERND HONERMEIER Germany 2008 Thesis disputation date: 17.03.2008 Examining commission Chairman/person: Prof. Dr. Ingrid Hoffmann Supervisor: 1. Advisor: Prof. Dr. Franz-Josef Bockisch 2. Co-Advisors: Prof. Dr. Bernd Honermeier Examiners: Prof. Dr. Stefan Gäth Prof. Dr. Hermann Seufert Preface Even in the 21st century, water is still used for irrigation in order to produce food and feedstuff. Given a share of ca. 70 %, agriculture is the largest water consumer worldwide and will have to remain it in order to guarantee at least the supply of food.