The balance sheet of nitrogen, phosphorus and potassium was worked out from the potato-based cropping systems experiments conducted during 1985 to 1987 on Alfisols of South-eastern dry region of Karnataka. Potato-finger millet cropping system removed lower N, higher P and K than potato-ground nut system. Nutrient uptake in both the cropping systems, increased with increase in frequency of irrigation and fetilizer level given to preceding potato crop. The balance sheet of nutrients indicated net gains of total N and K. and a net loss of P in both the potato-based cropping systems.
