Long term experiments conducted at Ludhiana, Banswara and Ranchi in maizewheat cropping systems over the period of 14 years (1977–90) indicated that at Ludhiana maize yields responded upto 120 kg N, 80 kg Pps and 40 kg K2O/ha. There was no trend in yields over time in respect of N0P0K0, N120P0K0, N120P80K0, and N120P80K40. Wheat yields also responded similarly. Yields increased significantly in case of N120P80K0, and N120P80K40 over time. At Banswara, maize yields responded upto 120 kg N and 80 kg P2O5/ha. There was no response to K. Maize yields declined significantly in respect of N0P0K0 and N120800K0, However, there was no trend in case of N120P80K0 and N120P80K40. Wheat yields responded significantly upto 120 kg N/ha and 80 kg P2O5/ha while there was no response to K. Yields declined significantly in case of N0P0K0 and N120P0K40. At Ranchi, maize yields responded upto 120 kg N, 80 kg P2O5 and 40 kg K2O/ha. No trend in yields was observed In respect of any of the treatments. Wheat yields responded similarly. No trend in yields was observed in respect of N0P0K0, N120P0K0 and N120P80K40 while yields increased significantly in respect of N120P80K0.