Agriculture science is a biological field that is concerned with the practices and understanding of agriculture. It is an interdisciplinary subject which involves parts of natural, economic and social sciences. Agricultural science focuses on the research and development in the areas of plant pathology, horticulture, soil science, entomology, plant breeding and genetics, and production techniques such as irrigation management. It also deals with improving the quantity as well as the quality of agricultural productivity. Agricultural science also seeks to minimize the effects of pests such as weeds, insects and pathogens on the crop production system. This book provides comprehensive insights into the field of agricultural science. It is compiled in such a manner, that it will provide in-depth knowledge about the principles and practices in this area. This textbook is appropriate for those seeking detailed information about agricultural science.