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Articles by M. Shahjahan
Total Records ( 6 ) for M. Shahjahan
  F. Islam , M. R. Karim , M. Shahjahan , M. O. Hoque , M. Robiul Alam and M. Akhtar Hossain
  The research work was conducted to find out the optimum plant spacing for maximizing the yield of turmeric. Four plant spacing i.e., 45 x 10, 45 x 20, 45 x 30 and 60 x 30 cm2 were considered in the study. The highest average yield (17.87 t ha-1) was obtained from 45 x 10 cm2 plant spacing which was closely followed (16.77 t ha-1) by 45 x 20 cm2 plant spacing. While the lowest average yield (13.42 t ha-1) was recorded from 60 x 30 cm2 plant spacing in respective two years. So, in agronomic point of view, 45 x 10 cm2 plant spacing is suitable but economically 45 x 20 cm2 plant spacing is viable for turmeric production.
  M.N. Islam , M.A. Rahim , M.N.A. Naher , M.I. Azad and M. Shahjahan
  An experiment on the inserted contact grafting in mango (Mangifera indica L.) was conducted to find out the best time and age of rootstock for grafting in best varieties of mango under Bangladesh condition. The experiment indicated that inserted contact grafting could be more successful in 16 May operations. The highest percentage of survived grafts (56.82%) was recorded in 16 May operation 120 days after the detachment of the grafts from the mother plant requiring less time (70.22 days) for graft success when grafted with 2-year-old rootstock in cv. Amrapali (BARI Aam–3).
  M. Ibrahim Khalil , Md. Abdul Motallib , A. S. M. Anisuzzaman , Zakia Sultana Sathi , M. A. Hye and M. Shahjahan
  The antibacterial activities of five different brands of unifloral honey from the Northern region of Bangladesh were investigated. The honeys were from Litchi (Litchi shinensis), Kadom (Anthocephalus cadmba), Til (Seasamum indicum), Plum (Zizyphus mauritiana) and Mustard (Brassica campestris) flowers. It was found that the tested unifloral honeys showed a significant antibacterial activity against the wound infecting and enteric pathogens. Among them honey from Mustard flower was more active.
  M. Ibrahim Khalil , Md. Abdul Motallib , A. S. M. Anisuzzaman , Zakia Sultana Sathi , M. A. Hye and M. Shahjahan
  The research work was conducted to investigate the biochemical composition of five different brands of unifloral honey. The honey from Litchi (Litchi chinensis), Kadom (Anthocephalus cadmba), Til (Sesamum indicum), Plum (Zizyphus mauritiana) and Mustard (Brassica campestris) were used. This paper includes, determination of pH, specific gravity, solubility, moisture content as well as the total and reducing sugar, total protein content, water soluble protein, lipid, ash, dry matter, vitamin A and C and mineral content. It was found that the total content of sugar 77.7-80.30%, reducing sugar 62.30-65.02%, protein 0.30-0.33%, lipid 134-146mg 100 gm-1, vitamin-C 4.8-5.3mg 100 gm-1, pH 3.30 to 4.20, ash 0.65 to 0.80 and specific gravity between 1.33 to 1.36.
  M. Mofazzel Hossain , M. Shahjahan , M. Mosaddeque Hossain and M.N. Bari
  The highest chlorophyll `a` content was recorded in the variety BLO 101 (0.74) and was found significantly different from other varieties/lines except BLO 114 and khotkhotia-1. The lowest amount of chlorophyll `a` content was observed in the variety Nayankajal (0.43), which was also significantly different from that of other varieties/lines. The chlorophyll `a` content was negatively correlated (-0.146) with brinjal shoot and fruit borer (BSFB) infestation. The highest chlorophyll `b` content was recorded at 70 DAT. The amount of chlorophyll `b` varied significantly among the varieties/lines at different ages. The lowest chlorophyll `b` content was recorded at 40 DAT (0.26) and it was statistically identical with that of 100 DAT (0.30). The average highest amount of chlorophyll `b` was estimated in the variety Dhohazari-1 (0.45), which was significantly different from that of other varieties/lines except BLO 45. The lowest amount of chlorophyll `b` was obtained in the variety Laffa (0.25), which was significantly different from that of all other varieties/lines. The highest amount of total chlorophyll contents was estimated in the variety BLO 114 (1.109) which was significantly different from that of other varieties/lines. The average lowest amount of total chlorophyll was estimated in the variety Nayankajal (0.83) with the highest infestation.
  A.K.M. Rohul Amin , M.A.J. Bapary , M.S. Islam , M. Shahjahan and M.A.R. Hossain
  An eighteen weeks long experiment was conducted during the month of June to October, 2002 to observed the effect of different period of starvation and subsequent refeeding on growth, daily food demand and food conversion ratio of Thai pangs Pangasius hypophthalmus. Fish maintained in four treatments were either: fed to satiation twice a day (control-A), fed every alternate day (1:1-B), starved two days followed by spell of two days feeding (2:2-C) and starved for 5 days following 5-day feeding (5:5-D) at a sticking density of 100 fingerlings per decimal at 28±1.54°C. Thai pangas responded to a change from a restricted to satiation feeding showing a higher daily feed demand compared to their counterparts raised on a liberal feeding regime. The total feed demand of fish in controlled treatments was, however, much higher than the fish in the other three treatments. Nonetheless, fish that fed to satiation on alternate day (1:1) had similar body weights to the controls and were larger than those exposed to 2 or 5 days of feed deprivation (2:2 or 5:5). There was no significant difference in specific growth rate of fish in the treatments A and B over the experimental period. The highest FCR was found in treatment A (control) where fish were fed to satiation twice a day. The study provided evidence that Thai pangas would be cultured in feeding regime with feeding every alternate day without any significant difference in fish size and final production. As farmers have to give less feed in the system they can manage water quality in better way.
 
 
 
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