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Articles by S.K. Paul
Total Records ( 5 ) for S.K. Paul
  S.K. Paul , M.A.R. Sarkar and M. Ahmed
  Leaf production, leaf and culm dry matter yield of transplant aman rice as affected by row arrangement and tiller separation was investigated in this study. The highest number of leaves hill-1 (44.53, 70 DAT) was produced in single row, when tiller separation was done (41.00, 55 DAT) at 25 days after transplanting (DAT) and intact hills (48.74, 55 DAT). The lowest leaf production hill-1 was recorded in triple row (26.10, 100 DAT), when tiller separation was done at 35 DAT (26.99, 40 DAT) and 2 tillers kept hill-1 (19.88, 40 DAT). The maximum leaf dry matter yield (2.78 t ha-1, 70 DAT) was obtained in triple row which was statistically identical to double row (2.59 t ha-1), while tiller separation was done at 35 DAT (2.47 t ha-1, 85 DAT) and 4 tillers kept hill-1 (2.56 t ha-1, 85 DAT) which was statistically identical to intact hills (2.50 t ha-1, 85 DAT). But the lowest one was recorded in single row (0.47 t ha-1, 25 DAT), where tiller separation was done at 35 DAT (0.53 t ha-1, 25 DAT) and 2 tillers kept hill (0.56 t ha-1, 25 DAT). The maximum culm dry matter yield was recorded in triple row (4.14 t ha-1, 85 DAT), when tiller separation was done at 35 DAT (4.01 t ha-1, 85 DAT) and intact hills (4.10 t ha-1, 85 DAT) which was statistically identical to 4 tillers kept hil-1 (3.97 t ha-1, 85 DAT). But the lowest dry matter of culm was recorded in single row (0.42 t ha-1, 25 DAT); when tiller separation was done at 25 DAT (0.50 t ha-1, 25 DAT) and 2 tillers kept hill-1 (0.49 t ha-1, 25 DAT). Closer row spacing significantly reduced the leaf production ability hill-1 but increase leaf and culm production unit-1 area and hence, dry matter yield increased. To enhance leaf production hill-1, transplant aman rice cv. BR 23 (Dishari) can be grown in single row but to increase dry matter yield it can be grown in triple or double row arrangement. Tillers can be separated at 25 or 35 DAT keeping 4 tillers hill-1.
  G.M.A Hossain , S.M. Bokhtiar , S.K. Paul and M.R. Anam
  An experiment was made to evaluate the agronomic and economic performance of different intercrops viz. Onion (Allium cepa), Potato (Solanum tuberosum) and sesame (Sesamum indicum) with sugarcane in paired row system. Sugarcane with potato followed by second intercrop sesame produced the highest yield of cane, potato and sesame. Maximum number of tiller, millable cane, cane diameter and unit stalk weight were observed in the same crop combination. On the contrary, sugarcane with onion followed by sesame produced maximum economic return. Brix (%) of cane juice did not varied significantly. So Intercropping with sugarcane performed better in respect of agronomic and economic benefits over sole cane.
  D. Dutta , M.A.R. Sarkar , M.A. Samad and S.K. Paul
  The experiment was conducted to investigate the effect of row arrangement and nitrogen level on the yield and yield components of transplant aman rice (cv. BRRI dhan 32). The highest plant height at harvest, number of total tillers hill -1, number of effective tillers hill -1 number of non bearing tillers hill -1, grains panicle -1 and total spikelets panicle -1 were obtained in single row arrangement followed by double, triple and haphazard row system. The maximum grain and straw yield were obtained in double row arrangement. The highest number of effective tillers hill -1, grains panicle -1 and grain yield were found where the crop was fertilized with 120 kg N ha -1. These results were statistically identical when 60 and 90 kg N ha -1 were applied. So, cultivation of transplant aman rice (cv. BRRI Dhan 32) in double row arrangement appeared to be beneficial practice and fertilization with 60 kg N ha -1 was more economic in respect of grain yield.
  P.K. Paul , M.S.E. Alam , L. Rahman , L. Hassan and S.K. Paul
  The soybean genotype were evaluated under different environment (Sowing dates) to determine the genotype x environment interaction vis-a-vis stability over a wide range of environment. The genotype, environment and genotype x environment interactions differed significantly for all studied characters. Considering the yield and yield contributing characters and using three stability parameters viz., phenotypic index greater than zero, regression co-efficient around unity (b = 1.0) and least deviation from regression (non-significant S2d). The lines BS-60, BS-15 and BAU-23 were found stable for plant height. The lines C.O.-1 and SAO-Luiz were identified most suitable for number of pods per plant. In case of number of seeds per pod the genotypes BAU-23 and BS-15 were observed stable but the genotype BS-12, Sohag and TGX-843, were found stable for percentage of pod per plant but the lines BS-60 and AGS-160 were found stable for 100-seed weight. It was revealed that lines BS-60 and TGX-843 were found stable for most of the characters. It is therefore suggested that the identified stable genotypes with respect of different characters might be used in breeding programme to transmit desirable trait (s) to develop stable genotype of Soybean.
  M.Z. Karim , R. Alam , R. Baksha , S.K. Paul , M.A. Hossain and A.B.M. Mafizur Rahman
  Leaf sheath were used as explants to induce callus on modified MS media supplemented with 2, 4-D as growth regulators. Different concentrations of BAP, IBA, NAA and IAA were used to regenerate shoots and a concentration of 1.0 mg/l BAP and 0.5mg/l IBA was found superior in the optimum production of multiple shoots. NAA (5mg/l) showed best performance in the production of roots. The plantlets were successfully transferred to soil with 70 percent survivability.
 
 
 
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