BABU S, SINGH R, AVASTHE RK, YADAV GS, RAJKHOWA DJ. Intensification of maize (Zea mays) –based cropping sequence in rainfed ecosystem of Sikkim Himalayas for improving system productivity, profitability, employment generation and energy-use efficiency under organic management condition. Indian J Agri Sci. 2016;86(6):778–84. doi:10.56093/ijas.v86i6.58980