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Articles by S. Rahman
Total Records ( 4 ) for S. Rahman
  P.K. Sarker , S.U. Ahmed , S. Rahman and D. Dey
  Present study deals with the suitability and production potential of two exotic fish species (GIFT: Genetically Improved Farm Tilapia; O. niloticus, C. carpio) as mono culture and mixed culture system of integrating a short term (mid August-mid December) brackish water aquaculture in the south-west coastal paddy fields of monocropped coastal saline soil at high rain fed region during monsoon season. Twelve paddy plots size ranged from 1320-2080 m2 with peipheral trenches (40 cm depth and 45 cm width) and one meter deep ditch in 3% of the area were stocked with fish at a density of 5928 ha-1 for mono and mixed culture (50+50%), after 105 days of rearing average weight and production rate of fish from monoculture of GIFT (T1), mixed culture of GIFT and C.carpio (T2) and monoculture of C. carpio were found 112.5 g, 479.36 kg; (114.2+110.6 g); (241.68+185.21 kg); 114.03 g, 398.95 kg ha-1, respectively. Higher significant production was found in case of GIFT monoculture in T1 than that of other treatments. Highest net return was obtained from T1 while lowest net return from rice monoculture crop farming in T4. So, rice fish farming was economically more rewarding than the rice mono-crop farming. Besides, GIFT monoculture plays a significant production potential for coastal paddy fields.
  P. K. Sarker , S. Rahman , M. M. Rahman , S. C. Chakraborty and M. N. Islam
  A laboratory trial was conducted on the protein digestibility of rohu (Labeo rohita) fingerlings in a static indoor fish rearing water system of glass made aquaria (90 cm x 30 cm x 30 cm) for a period of 75 days. Each treatment had two replicates containing 12 fingerlings. Five experimental diets A, B, C, D and E were prepared from different combination of five major sources of protein viz., fish meal, protein concentrate, meat & bone meal, mix of animal protein sources and mix of plant protein sources each containing 33% dietary protein level. The apparent protein digestibility (APD) values of the above mentioned diets were 81.70, 78.66, 75.53, 72.53 and 69.96%.
  S. Rahman , P.K. Sarker , S.U. Ahmed , M. Rafiquzzaman and S.M. Ferdous
  A study was carried out during the Aman season (September-Dcember) in the south-west coastal paddy fields of Bangladesh to understand the culture suitability and production potential of two exotic fish species, namely Puntius gonionotus and Cyprinus carpio in rice fish integrated culture system. Twelve paddy plots with size ranges from 1300-27000m2 were stocked with fish at a density of 4930 /ha for mono & mixed culture (50+50%). After 50 days of rearing production rate of fish from monoculture of Puntius gonionotus (T1), mixed culture of Puntius gonionotus1 and Cyprinus carpio (T2) and monculture culture of Cyprinus carpio (T3) was found 280.12, 330.40 (119.64+210.76 kg) and 279.78 kg ha-1, respectively. No significant variation in fish production was observed between T1 and T3. But compare to other treatments significant higher production of fish was obtained from T2. However, for rice production a significant lower production (3.14 ton h-1) was obtained for T3 compare to other two treatments, while higher rate of rice production (3.85ton/h) was recorded for T1. For control plot (T4) the production rate of rice was 3.40 ton h-1. In the study, no negative correlation was found for the integration of fish with rice culture.
  F. Subhan , M. Anwar , N. Ahmad , A. Gulzar , A. M. Siddiq , S. Rahman , I. Ahmad and A. Rauf
  An experiment was conducted at Cereal Crops Research Institute Pirsabak Nowshera during 2000-01 to study the effect of gamma radiation at the rate of 10, 20 and 30 Krads on growth and yield of barley fertilized with 30,60 and 90 kg ha-1 of nitrogen. Nitrogen was applied in split doses at sowing and tillering stages with 100 kg ha-1 of Single Super Phosphate (SSP) as a basal dose. Nitrogen significantly increased plant height, straw yield, 1000-grain weight and grain yield. The application of 90 kg N ha-1 produced 3875 kg of grain and 13667 kg ha-1 straw yield. Irradiation had positive effects on grain yield with maximum production at the rate of 10 krads of gamma rays. An increase in straw yield was also observed with increase in radiation doses, where maximum straw yield was recorded with 30 krads of radiation. Moreover, spike length and 1000-grain weight were also significantly increased with radiation. The interaction of both variables in most cases was significant with positive relation ships with the characters studied in the experiment.
 
 
 
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