الفهرس | Only 14 pages are availabe for public view |
Abstract · J’ he \.,, r· i t e r w i shes t o ex p r e s s h i s cl e e pes t a p pre c i at i on and ratitt1de to Professor Dr. Olfat, H. El-Bagoury, Prof. of Agronomy, Faculty of Agriculture, Ain Shams University, for hPr StlpPrvision, valuahle advice, helpful suggestions, constructive criticism and encouragement throughout the investigation and during the preparation the manuscript. Thanks are also extended to Professor Dr . M., A. ,Ashoub, Prof., of Agronomy, Faculty of Agriculture, Ain Shams Univ., for his help in all pro blems, supervision, support, and helpful assistance in writing the dissertation. The writ e r wishes also to express his deepest gratitude to Dr . A.S. Edris, Associate Professor of Agronomy, Faculty of Agriculture, Ain Shams University for his fathful assistance, generous help and precious advice during the progress of this work. Hearty and greatful thanks are extended to Dr . M. S. El-Hab. al, Associate Professor of Agronomy, Faculty of Agricultur e , Ain Shams University for this every possible guidance he kindly offered. Great thanks are also to my mother and my wife for their encouragement throughout the investigations . |