Every possible efforts has been made to ensure that the information content in this book is accurate at the time of going to publish. This book entitled "seasonal variation in microbial population and relationship of microbes with soil properties in sweet orange orchards" includes updated general information on area under Sweet Orange, production, improved verities, nutritional information and different fertilizers used in Sweet Orange. The unique feature of this book lay on more than 15 figures and 10 photographs related to seasonal variation in sweet orange. We believe that the information compiled and presented in this book would be of immense interested and useful to various Nurseryman, stakeholder like undergraduates and post graduates programmed in Agriculture, Horticulture and development officer in Agriculture.