This study was conduced during the two summer seasons of 2004 and 2005 on potato cv. Diamant at Abou Awad village, Aga, Dakahlia Governorate, to investigate the utilization of different sources and rates of compost manures (rice straw , maize stalks, banana wastes and sugarcane bagasse composts) on growth, yield and its components as well as tuber quality. The obtained results indicated that plant stand (%) at 45 days after planting was the highest with the application of rice straw compost at the rate of 21 (ton/fed.) in the first season and banana wastes compost at the rate of 15 (ton/fed.) in the second one. Vegetative growth characteristics which included plant height, number of main stems/ plant, foliage fresh , dry weights and NPK in the leaves at 85 days after planting (DAP), as well as total tuber yield (ton/ fed.), number of tubers/ plant, tuber weight/ plant NPK in tubers at harvesting were significantly increased by the adding mineral fertilizer (Check) in both seasons. On the same trend, treatments of banana waste compost at the rate of 15 (ton/fed.) and compost of rice straw at the rate of 21 (ton/fed.) increased dry matter and starch contents of tubers in both seasons. The lowest content level of nitrate (ppm) in the tubers was obtained when plants were supplied with sugarcane bagasse at the rate of 11 (ton/fed.) and rice straw compost at the rate of 7 (ton/fed.) in both seasons. In general, it is essential to adopt a system of organic farming in potato production for exportation and maintenance of soil fertility as well as reducing the pollution of environment.