Among the various practices, judicious use of manures and fertilizers as one of the important strategies for increasing production of rice per unit area. The integrated use of organic manures with inorganic fertilizers can help to maintain optimum crop yield and required soil nutrient pool on sustained basis. The contribution of organic manure is to be judged not only in terms of nutrient contribution, but also by their role in building up of nutrient reserves in soil and increasing organic matter level of soil which ultimately improves physical, chemical and biological properties of soil and it is most critical in the context of sustainable agriculture. General acceptance of organic farming is not only due to greater demand for pollution free food but also due to natural advantage of organic farming in supporting the sustainability in agriculture. The essence of practicing organic farming lies in the use of naturally available resources like organic wastes, predators, parasites in conjunction with natural processes like decomposition, biological fixation and resistance to achieve the needs of crop production.