The book deals with different aspects concerning biofertilizers or microbial fertilizers with 15 chapters. The chapter 1-5 deals with basic aspects of microbial fertilizers, chapter 6 deals with the responses of horticultural crops to biofertilizers and chapter 7 deals with the consortial biofertilizers which is very important as the biofertilizers consortia provides multiple functions for sustainable production. The chapters 8-10 deals with formulations, quality and constraints in biofertilizers respectively. The chapter 11-12 deals with recent advances and future research perspectives in biofertilizers. The chapters 13-14 covers major manufacturers and the essential equipments required for biofertilizer production. This book will certainly provide basic and useful information on the various role of biofertilizers for horticultural crops and the users may find this book useful. An attempt has been made in this book to include all the basic and applied aspects of biofertilizers