Evaluation of two sugar beet cultivars (Beta vulgaris L.) for growth and yield under drought and heat conditions [Elektronische Ressource] / submitted by Fathi Mohamed Fathi Abd-el-Motagally

Institute of Plant Nutrition Justus Liebig University Giessen Prof. Dr. S. Schubert Evaluation of two sugar beet cultivars (Beta vulgaris L.) for growth and yield under drought and heat conditions A thesis submitted in partial fulfillment of the requirements for the degree of Doctor in Agriculture Submitted by Fathi Mohamed Fathi Abd-El-Motagally Assiut / Egypt 2004 Approved by the examination commission Dean: Professor Dr. Dr. h.c. W. Friedt 1- Advisor: Professor Dr. S. Schubert 2- Professor Dr. K-H. Kogel 1- Examiner: Professor Dr. B. Honermeier 2- Examiner: Professor Dr. D. Steffens To my father in spirit whom I always remember and to my mother and dear sisters for their love and to my wife Mervat who helped me to finish this work and last to my daughter Rana that I wish her a good future. 1 Introduction..............................................................................................................................................................1 2 Objectives...................................6 3 Material and Methods ......................................................................................................7 3.1 Soil experiments.........................................7 + +3.1.