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Pakistan Journal of Biological Sciences
Year: 2002  |  Volume: 5  |  Issue: 2  |  Page No.: 165 - 168

Determination of Site Specific Fertilizer Requirement of Sugarcane and Intercrops in Sugarcane-based Cropping Systems

S.M. Bokhtiar, M.L. Kabir, M.J. Alam, M. M. Alam and M.H. Rahman    

Abstract: The 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 ha–1) with highest BCR of Tk.4.37 was found in High Barind Tract with the application of N190 + P44 + K65 + S25 + Zn3.5 kg ha–1 to sugarcane and N55 + P18 + K25 + S6 kg ha–1 to potato. In Tista Meander Floodplain soils, application of N120 + P40 + K75 + S20 + Zn2 + Mg15 kg ha–1 and N15 + P5 + K6 + S3 kg ha–1to sugarcane and lentil, respectively produced the highest yield of 117 t ha–1 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 ha–1.

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