This book will be useful for students of agriculture, agronomy, scientists, agronomists, organic farmers, development professionals and other allied professionals. Soil health and nutrient management through organic sources are extremely crucial due to indiscriminate and imbalanced use of chemical fertilizers which has depleted our soil and polluted our environment. Shortage of chemical fertilizers and its sky rocketing prices in the recent past due to price rise in raw materials and change in subsidy policies has created a precarious situation in which farmers are bound to find alternatives. Moreover, subsidy bill of chemical fertilizers has become a huge financial burden for the governments. Therefore, organic nutrient management has emerged as the best alternative.