The book will be useful for the under-graduate and postgraduate students, teachers, scientists, administrators, planners and others engaged in the field of Horticulture. It will also serve as a ready source of information for the candidates appearing for undergraduate and post-graduate entrance examinations and comprehensive tests conducted by the Agricultural Scientists Recruitment Board, the Indian Council of Agricultural Research, the Council of Scientific and Industrial Research, the NABARD, various Commodity Boards and the State and Central research and developmental organizations. Sincere efforts were taken to make the definitions precise and crisp. Suggestions for improvement would be very much appreciated