The importance of green manuring in crop production has been known since ancient time. In recent years its importance is also increasing continuously because of high cost of chemical fertilizers, increased risk of environmental pollution, and need of sustainable cropping systems. Green manure crop absorbs the nutrient from lower layer and leave them in surface when ploughed. However, green man uring can improve soil fertility and consequently crop yields. Green manuring is low cost-effective technology in minimizing cost of fertilizers and safe guarding.