Synopsis Biofertilizers are the nutrient availability systems in which biological processes are involved. These biological systems are the essential part of life of several microbes found in soils and provide nutrients like nitrogen, phosphorus and several beneficial compounds for crop. Presence of these microbes makes soil alive and capable for sustainable support to the life of crop, the another life. In this book, the concept of making soil live for sustainable production is discussed. In chapter one, The organic matter which is the food and provide basic living environment for life in soil, is discussed with sources and dynamics. In chapter two, Earthworm are not only good composter but also a indicator of health of life in the soil and even a farmer can easily know about the health of soil in his crop field. Considering these important roles of earthworm the information on vermiculture is given in chapter three.