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Articles by S.M. Bokhtiar
Total Records ( 3 ) for S.M. Bokhtiar
  S.M. Bokhtiar , M.S. Hossain , K. Mahmud and G.C. Paul
  Four field experiments were conducted under different Agro-ecological zones (AEZs) of Bangladesh at Ishurdi (AEZ 11), Jamalpur (AEZ 9), Rajshahi (AEZ 11) and Thakurgaon (AEZ 1) in 2001-2002 cropping season. The main aims of the studies were to determine the fertilizer requirements on productivity of cane and intercrops (potato and onion) and their economics under sugarcane based cropping systems. Cane yield was enhanced when it was intercropped with potato and onion for the residual effect of applied fertilizer to intercrops. Net economic return was greater in cane intercropped with potato and onion over sole crop for all the experiments. Intercropping potato with sugarcane using FRG’97 rates of fertilizer for cane (130 kg N, 35 kg P, 60 kg K, 20 kg S and 3 kg Zn ha-1) and potato (50 kg N, 10 kg P and 20 kg K ha-1) gave higher economic benefit at Ishurdi site. In Jamalpur site, sugarcane intercropped with potato following fertilizer rates based on BSRI’98 for cane (150 kg N, 42 kg P, 100 kg K, 30 kg S and 2 kg Zn ha-1) and potato (50 kg N, 10 kg P and 40 kg K ha-1) gave the highest net profit. But, the treatment received fertilizers as per FRG’97 showed higher economic benefit from sugarcane-onion intercropping systems both at Rajshahi and Thakurgaon sites.
  S.M. Bokhtiar , M.L. Kabir , M.J. Alam , M. M. Alam and M.H. Rahman
  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.
  S.M. Bokhtiar , M.J. Alam , K. Mahmood and M.H. Rahman
  Field experiments were conducted to study the effects of integrated plant nutrient system (IPNS) on the yield and yield contributing parameters of sugarcane at Ishurdi, Thakurgaon and Sreepur under High Ganges River Flood plain, Old Himalayan Piedmont Plain and Madhupur Tract, respectively. The use of organic and inorganic fertilizer showed significant effect on the yield and yield attributes like tillers, millable stalk and juice quality of sugarcane. The results revealed that yield increase was to the extent of 22.86, 49.2 and 74.0 % at Ishurdi, Thakuragaon and Sreepur, respectively due to the application of 12.5 t ha -1 press mud/cowdung accompanying chemical fertilizers applied on the basis of soil test for HYG over present recommended rates of chemical fertilizer (as per FRGĀ“97) for MYG. Press mud alone increased 16-20 per cent cane yield over the dose of N, P, K, S, Zn and Mg fertilizers based on soil test for HYG at all locations. Incorporation of dhaincha (Sesbania aculeata) as green manure increased cane yield and contributed about 42-46 kg N ha -1 in soil.
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