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Articles by M.A. Kader
Total Records ( 5 ) for M.A. Kader
  M.K. Begum , M.A. Kader , S.M.A. Hossain and K.M. Hasan
  The seedlings raised in polythene covering of seed bed were reported to produce the highest plant attributes in boro rice. Recommended NPK fertilizer+Ash+Cowdung produced the highest grain yield (5.98 t ha-1) and also showed better performance in plant height, bearing tillers hill-1, panicle length, sterile spikelets panicle-1 and straw yield than other treatments. The treatment combination of seedlings raised in polythene cover of seed bed and recommended NPK+Ash+Cowdung produced the highest grain yield.
  Shamima Akhter , M.H. Mian , M.A. Kader and S.A. Begum
  A suitable combination of Azolla and urea-N was investigated for cultivation of rice (cv. BRRI Dhan 29). For this purpose an attempt was made to apply 30, 40, 50, 60 and 70% of the recommended doses of urea in 2 or 3 splits along with incorporation of one layer of Azolla grown from 0.2 kg m-2 inoculum. Two separate treatments of applying 100% of the recommended dose of urea in 3-splits (without Azolla) and no application of N at all from either urea or Azolla were included. Azolla covered the surface area in 13 days after inoculation at 7 DAT and reached the maximum growth in 19 days producing 14.0 to 18.3 t ha-1 fresh biomass containing 20.7 to 26.4 kg N ha-1. Incorporation of one layer of Azolla at 30 DAT plus application of 50, 60 and 70 kg N ha-1 in 3 splits constituted the application of 72.7, 81.6 and 91.1 kg N ha-1 that produced 5.58, 6.00 and 6.02 t ha-1 grain yields which were statistically similar to each other but the latter two were statistically superior to the grain yield of 5.40 t ha-1 produced by conventional recommended practice. Total uptake of N, P and S by the rice plants (grain+straw) were increased significantly due to incorporation of Azolla. Incorporation of one layer of Azolla plus application of 60% of urea-N appeared as the best combination in this study.
  Ferdousi Begum , M.A. Kader , M.Y. Sarker , S.M. Raquibullah , M.D. Hossain and Zahid-Al-Rafique
  An experiment was conducted to study the effect of 1000 and 1500 ppm KNap and 2 ppm mixtalol on chlorophyll a, b and carotenoid content of rapeseed leaf. Results showed that chlorophyll a, b and carotenoid content of leaves were positively affected by 1000 ppm KNap and 2 ppm mixtalol but 1500 ppm KNap was failed to show any significant positive effect on chlorophyll content of rapeseed leaf. Two years mean results showed increased chlorophyll a, b and carotenoid content of leaves of rapeseed plant over control following 2 ppm mixtalol and 1000 ppm KNap single and double spray treatments.
  M.J. Alam , S. Dewan , M.R. Rahman , M. Kunda , M. Kunda , M.A. Khaleque and M.A. Kader
  The experiment was carried out simultaneously to compare the growth performance of Amblypharyngodon mola in rice fish culture system with Barbodes gonionotus and cyprinus carpio in farmer`s rice fields near to Bangladesh Agricultural University campus, Mymensingh for a period of 113 days from 12th August to 3rd December, 2002. Three treatments viz., T1 with A. mola and B. gonionotus, T2 with A. mola and C. carpio and T3 as control (without fish) were used in this study. Each treatment was provided with three replications. All the treatments were fertilized with urea (200 kg ha-1), TSP (150 kg ha-1) and MP (75 kg ha-1). With respect to cultural suitability, A. mola showed comparatively high growth rate and survival rate when it was stocked with C. carpio than with B. gonionotus. Among the three species A. mola showed the lowest growth rate and C. carpio showed the highest growth rate by average, net and percentage of increase. The production of fish were also recorded higher (576.27 kg ha-1) in the treatments stocked with A. mola and C. carpio than (298.91 kg ha-1) the treatment stocked with A. mola and B. gonionotus. However, the growth rate and survival rate of A. mola were always higher in treatment T1. Significantly (P<0.01) higher yield of grain and straw were obtained in the treatments with fish than without fish and they were found to increase over the control by 15.88-19.34% for grain and 12.78-15.34% for straw. The initial values (before rice transplantation) of soil pH, organic matter, total nitrogen, phosphorus and potassium contents did not show any significant difference among the treatments in most cases, but the final values (after harvest of rice and fish) of the same were recorded significantly higher in the treatments with fish than that of control (without fish) in most of the cases except pH.
  M.A.K. Azad , M.R. Rahman , Z. Rahman , M.A. Kader , M.M. Haque and M.J. Alam
  An experiment was conducted to evaluate the water quality, growth and production of fishes at different species compositions in polyculture using tilapia (Oreochromis niloticus), pangas (Pangasius hypophthalmus), mrigal (Cirrhinus mrigala) and silver carp (Hypophthalmichthys molitrix). The experiment was conducted for a period of 90 days from September 8, to December 7, 2002 at the Fisheries Faculty Field Laboratory of Bangladesh Agricultural University, Mymensingh. There were three treatments each with three replications. In all the treatments, the stocking density was 100 fish/decimal at different species compositions. All the ponds were subjected to same regime of feeding and fertilization. Fortnightly random sampling was done to adjust the feeding rate. In this experiment, mrigal showed the highest SGR (% per day) value (3.74) in T2. Tilapia showed the second highest (3.65) SGR (% per day) in T1. Specific growth rate (% per day) of pangas was comparatively lower in all treatments. Mean survival rates of various species ranged from 90.63 to 91.10%. Comparatively, tilapia showed the highest survival rate where pangas showed the lowest. T1 showed the highest survival rate but there was no significant variation among the treatments. Weight gain (g) of tilapia, pangas, mrigal and silver carp were 89.18, 30.61, 85.75 and 91.71 g in T1, 63.95, 37.24, 86.86 and 65.63 g in T2 and 70.84, 47.65, 70.42 and 72.87 g in T3, respectively. The highest and the lowest weight gain were found in T1. Silver carp attained maximum weight gain (91.71 g) in T1 where pangas showed the lowest (30.61g) in the same treatment. Among the treatments, the highest production was found in T1 (1974.02 kg/ha/90 days) which was significantly higher than other treatments. The production in T2 and T3 were 1405.59 and 1522.01 kg/ha/90 days but there was no significant variation between T2 and T3. Considering the above, pangas showed the lowest growth performance and production in all treatments compare with other species. From the findings of the present study, it can be said that polyculture of pangas with tilapia is not suitable, but it may be suitable with carps and for this further research is necessary.
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