The total geographical area of Bihar is 9.36 million hectare and the area under forest is 621635 hectare. The net area sown is 5.638 million hectare and the gross cultivated area is 7.946 million hectare. The area sown more than once is 2.538 million hectare with the cropping intensity of . About 3.521 million hectare net area and 4.386 million hectare gross area receive irrigation from different sources (By canals- By Tubewells- and by others- ). The percentage of net irrigated sown area is