Organic fertilizers are an essential source for plant nutrients and a soil conditioner in agriculture. This book explains how to use such organic fertilizers as compost, green sand, mulch, bone meal, and green manure to keep soil healthy with some real examples extending the concepts in organic fertilizers that may stimulate new research ideas and trends in the relevant fields. This book will be of use and interest to consultants, researchers, libraries, and entrepreneurs, manufacturers of bio-fertilizer and for those who wants to endeavor in to this field.