This is the first handbook that covers all aspects of bio-inoculants used in degraded lands to improve soil fertility and crop productivity as well as for the remediation of polluted lands. It discusses all novel sustainable approaches for the reclamation of problematic soils. Taking a multidisciplinary approach, this book explores the recent uses of plant microbe interactions in ecological and agricultural revitalization beyond normal agriculture practices and offers practical and applied solutions for the restoration of degraded lands for food, fodder, fuel and fiber security. Provides a single comprehensive platform for soil scientist, agriculture specialists, ecologists, and others.