Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2002.165.168BokhtiarS.M. KabirM.L. AlamM.J. AlamM. M. RahmanM.H. 2200252The site-specific nutrient requirement of sugarcane (Saccharum officinarum) and companion crops, viz. onion (Allium cipa) and lentil (Lens culinaris) in sugarcane based cropping systems field experiments was determined under two Agro-ecological zones (AEZ), namely High Barind Tract (AEZ 26) and Tista Meander Floodplain soils (AEZ 3). The application of fertilizers for sugarcane and intercrops, onion and lentil as per soil test basis followed by dhaincha (Sesbania aculeata) significantly increased cane yield to the extent of 19 % at AEZ 26 and 45 % at AEZ 3 over the sole cane crop. Maximum cane yield (119 t ha1) with highest BCR of Tk.4.37 was found in High Barind Tract with the application of N190 + P44 + K65 + S25 + Zn3.5 kg ha1 to sugarcane and N55 + P18 + K25 + S6 kg ha1 to potato. In Tista Meander Floodplain soils, application of N120 + P40 + K75 + S20 + Zn2 + Mg15 kg ha1 and N15 + P5 + K6 + S3 kg ha1to sugarcane and lentil, respectively produced the highest yield of 117 t ha1 with BCR of Tk.4.25. Green manure Sesbania aculeata increased cane yields about 2 to 9 per cent and contributed 56 - 66 kg N ha1.]]>Ahmed, N.S., S. Chockalingam and Parameswaran,199848587592Imam, S.A., A.H.M. Delwar-Hossain, L.C. Sikka and D.J. Midmore,199025111122Ledgard, S.F., J.R. Frency and J.R. Simpson,198517575577Majid, M.A., S.M. Bokhtiar and F. Alam,1998Saccharum officinarum L.)-lentil (Lens culinaris medic) inter-cropping system in the Calcarious soils of Bangladesh.]]>236372Singh, S.N., V. Singh, R.K. Singh, M.L. Agarwal and G.P. Singh,199728905906Uddin, M.M., S.M. Bokhtiar, M.J. Islam, J.R. Wilson, D.M. Hogarth, J.A. Campbell and A.K. Garside,19961996pp: 206208Waghmare, A.B. and S.P. Singh,198420261265