1- The longest plants, highest leaves and largest length and diameter of branches as well as the heaviest total cassava yield and its best physical (tuber length and diameter) and chemical characters expresed as N,P and K contents of tuber tissues were recorded with cassava plants received 35 ton/fed. of compost followed in descending order by the addition of compost manure at 30 ton/fed. and the finally the application of 25 ton/fed. of compost manure