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Articles by Firoza Akhter
Total Records ( 10 ) for Firoza Akhter
  M. Shamsul Haque , M. Asaduzzaman , Firoza Akhter , M. A. Samad , Taher Baksh and Zakaria Ahmed
  Harvesting jute plants leaving 1``, 2", 3", 4", 5" and 6" from the basal portion in the soil and retted separately, produced significant effect on the production of jute cutting and fibre quality. Harvesting plants leaving 4"-6" from the soil eliminated cutting completely and produced A-grade fibre. But harvesting plants leaving 4"-6" of basal portion in the soil apprehend loss of fibre weight.
  Zakaria Ahmed and Firoza Akhter
  Jute fibre quality depends to a very great extent on the process of retting. Much research has been done so far on retting of jute but still the jute growers face various practical difficulties in implementing the proper procedure for retting. Jute retting can be done by microbial or chemical process. Improper retting causes defective fibers which reduce the acceptability of these fibers for various industrial uses. Various methods have been devised for effective retting of jute which needs further research and development to systematize the entire retting process.
  M. Shamsul Haque , Zakaria Ahmed , Firoza Akhter , M. Asaduzzaman , M. Motiur Rahman and M. A. Hannan
  Recently six varieties of jute were released from Bangladesh Jute Research Institute where two were from C. olitorius (OM-1 and OF-390) and four from C. capsularis (C-718, C-2035, C-2005 & C-2143). These varieties were compared for their retting properties, morphological differences as well as their physical properties of the fibre extracted from them. Among them, white fibre with fewer cuttings and “A” and “B” grade fibers were obtained by retting from C-718 and OF-390 varieties, respectively yielding higher quantity of fibers. Other varieties found inferior in quality in all aspects.
  Zakaria Ahmed , Hasina Banu , Firoza Akhter and Ken Izumori
  Hydrolysis of agricultural wastes of jute sticks and rice husks were studied to extract D-xylose. When jute sticks was used as substrate, 1N H2SO4 was found to be suitable for D-xylose extraction at boiling temperature after a period of 1h. 1N H2SO4 was also found best for D-xylose extraction from rice husks. No cellobiose was detected in hydrolysate
  Md. Shamsul Haque , Md. Asaduzzaman , Firoza Akhter and Zakaria Ahmed
  Isolated fungi of Aspergillus clavatus, Rhizopus sp., Zygorinchous sp., Sporotrichum sp., Trichoderma sp., Penicillium sp. and Curvularia sp. were tested for their retting efficacy on green jute ribbons. In laboratory condition as well as in field condition, Sporotrichum sp. retted green ribbons of jute (var. CVL-1) in 7 days whereas both Trichoderma sp and Curvularia sp. retted green ribbons in 11 days. In case of retting by Sporotrichum sp., no adverse effect on the fiber bundle strength and fiber yield was observed and according to Pressley Index, fiber strength was found to be 10.82 Ibs/mg and fiber yield was about 2.8 Kg out of 40 Kg green ribbons.
  Zakaria Ahmed , Firoza Akhter , M. Shamsul Haque , Hasina Banu , M. Motiur Rahman and A. K. M. Faruquzzaman
  Micropropagation consists of three types of vegetative propagation. It remains a popular research subject and thus continued research is definitely needed to increase the speed with which some plants can be produced giving a superior quality product.
  M. Shamsul Haque , M. Asaduzzaman , Firoza Akhter , M. M. Hossain and Zakaria Ahmed
  An experiment was conducted in laboratory condition maintaining the ratio of plant stems and water at the range of 1:5, 1:10, 1:15, 1:20, 1:25 and 1:30 at a temperature 30°C. The best retting phenomena was observed at the ratio of 1:20. After the completion of retting in each ratio, fibre properties were measured and the best fibre was obtained at the ratio of 1:20. In the Retting top and bottom parts of the jute plants separately and malleting 40 cm of the basal part improved the fibre quality and showed more or less uniform retting. The cutting was completely eliminated through malleting and separately retting top and the bottom parts of the jute plants.
  Firoza Akhter , Z. N. Tahmida , R. Mondal and Zakaria Ahmed
  The residual effect of a mixture of blue-green algae (Anabaena variabilis, Aulosira fertilissima, Scytonema sp., Calothrix javanica and Westiellopsis prolifica) on the growth and yield of two cultivars of rice (BR-3 and BR-7) grown in two consecutive seasons was studied. Four treatments were considered viz. No- Control, UN- Chemical fertilizer applied 24 hours before transplantation, AN- Algal mixture applied seven days after transplantation and UN+AN- Fertilizer and algal inoculum used together. Results showed positive residual effect in terms of leaf breadth and length, number of grain and yield of straw in t. Aman season. Increase in grain yield over control was recorded in Boro and t. Aman season following only AN treatment. Combined effect of UN+AN was much better over control in first, second and third crop respectively. Highest amount of nitrogen and protein content of rice grain, nitrogen uptake by grain, nitrogen content of plants and uptake of nitrogen by plant were recorded suggesting positive residual effect of algalization. Enhancement effect of nitrogen fixation by blue-green algae on the yield of rice was found to be significant at 5% level.
  M. Shamsul Haque , Zakaria Ahmed , Md. Asaduzzaman , M. A. Quashem and Firoza Akhter
  Microbial population varies from place to place in the jute growing areas of Bangladesh. Fungal load was higher in post retting water. The addition of post retting microbes in retting test, in vitro, accelerated the retting. Retting period was almost half in treatment with microbes from post retting water than that of pre-retting water. Chemical properties of post retting water was within the range of environmental control.
  Zakaria Ahmed , Md. Shamsul Haque , Firoza Akhter and Mahmuda Begum
  Chemical composition of different pipeline varieties of jute (Corchorus capsularis and C. olitorius) fibres has been studied. The promising varieties which have been taken were C-718, C-2005, C-2193, C-2035 and OM-1 and experiment was carried out to know their moisture content (%), cellulose content (%), hemicellulose content (%), lignin content (%), ash content (%) and fat content (%) in three different parts of plant- top, middle and bottom. Moisture content was found highest (12.6855%) in bottom part of C-2035 variety and lowest (8.24%) in top part of C-2005 variety. In bottom part of C-718, cellulose content was found lowest (58.24%) and highest was found in the top part of C-2035 variety. Hemicellulose was found highest (23.73%) in top part of OM-1 and lowest (16.39%) in middle part of C-718. In case of lignin content, it was observed that 17.98% was found in bottom part of C-718 which seem to be highest and lowest (13.61%) was found in top part of C-2193 variety. In the top and bottom part of C-2005, ash content was found lowest (0.112%) and highest (0.995%) respectively. Fat content was highest (2.172%) in OM-1 variety and lowest (1.099%) in C-2193.
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