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Articles by M.A. Rashid
Total Records ( 5 ) for M.A. Rashid
  M.H. Kawsar , M.A. Rashid and M.Eunos Ali
  56 star cross brown-579 commercial layers of 43 weeks of age were taken into experiment and grouped into 4. It was found that D4 (20% coconut oil meal + 12.5% soybean oil meal) consumed highest feed (126.5g/d) than D1 (125.1 g/d), D3 (124.2 g/d) & D2 (123.3 g/d). The hen lay egg production of D1, D2 & D3 dietary groups almost similar but of D4 was higher.The higher egg weight (64.4g/egg) was observed in D2 dietary group and lowest in D4 group (61.5). The D4 dietary group showed lower feed efficiency (2.61) than D1 (2.6), D3 (2.57) & D2 (2.52) non-significantly. The live weight gain of the D2 & D1 dietary groups were non-significantly higher than those fed on D3 & D4 diets. The feed cost was lower for per kg egg production by the D4 (Tk. 23.01) dietary group due to the use of low cost(COM & SOM) vegetable protein based diet but there was no significant differences among the dietary groups. So there is economic feasibility of feeding the coconut oil meal with or without fish meal in layer diets.
  M.Z. Alam , T. Stuchbury , R.E.L. Naylor and M.A. Rashid
  Water uptake and pattern of germination of two rice cultivars differing in seed size were determined in iso-osmotic solutions of NaCl and polyethelene glycol, different concentrations of CaCl2 and combinations of NaCl and CaCl2. The results demonstrated that full imbibition of rice seeds occurred at around 30% moisture content (mc) and the critical mc for germination was around 25-30%. Although rates of water uptake in rice seeds were reduced with increasing salinity, rice seeds attained full imbibition by 48 h up to 150 mM salinity and reached at least critical mc by 72 h up to 250 mM salinity. Water uptakes in NaCl solutions were greater than in iso-osmotic solutions of PEG and rice seeds did not attain even critical mc in PEG solutions lower than -0.232 MPa even after 72 h. When Ca was added in combination with NaCl, water uptake in rice seeds increased. Water uptake in smaller seed was less during the first 12 h of imbibition than larger seeds. However, equilibrium mc was attained within 48 h in both large and small seed. The onset of germination declined with increasing concentrations of NaCl and in iso-osmotic solutions of PEG, particularly below-0.457 MPa osmotic potential. Large and small grain rice seed differed significantly in their response to salt and osmotic stress. Supplemental Ca (3 to 9 mM) significantly increased germination percentage compared to no Ca salt stress. Three mM Ca completely offset the deleterious effects of 150 mM NaCl and 6 mM Ca partially offset the deleterious effects of 225 mM NaCl on rice seed germination. Nine mM Ca significantly increased germination in large seed cultivar but not in the small grain cultivar compared to 6 mM Ca.
  M.J. Islam , S.S. Parul , M.A. Rashid and M.S. Islam
  A study of infiltration and bypass flow was conducted in a wet soil bin with three different soils treatments (sandy loam, clay loam and clay soil) to determine the swelling behaviour of cracking puddled soils by watering and its impact on bypass flow. Infiltration rate for the soils was recorded after puddling the soils. Then the puddled soils were allowed to dry for a period of up to 15 days. After that the plots were rewetted in order to observe the swelling and bypass behaviour of cracked soils. From this study it is observed that the infiltration rates of puddled soils were very low (0.03-0.05 mm h-1) mainly due to the puddling effect. The study indicates that cracks on puddled soils at 15th day’s of drying are effectively irreversible. The maximum bypass flow was recorded for the clay loam soil. During the first day, the flow rate was extremely high at 313 mm h-1. But this higher rate gradually reduced from the second day and onwards. The bypass flow rate for the clay loam and clay soil was almost same. The study reveals that it is not possible to swell up shrinkage cracks on puddled soils by watering alone. Re-working of the soil is necessary to seal the cracks.
  A.R.M. Ruhul Amin , A. Jabbar and M.A. Rashid
  Three antibiotics (RA-1, RA-2 and RA-3) were isolated from the chloroform extract of the fermentation broth of a Penicillium strain of an unidentified species. These compounds exhibited a significant in vitro antibacterial activity against both gram-positive and gram-negative organisms. The MIC values for RA-1, RA-2 and RA-3 were also determined against Bacillus subtilis, Shigella sonnei and Escherichia coli. The chloroform extract also showed strong cytotoxicity in brine shrimp lethality assay.
  M.A. Rahman , M.A. Rashid , M.M. Hossain , M.A. Salam and A.S.M.H. Masum
  Resistant rootstock of six Solanum species and 21 cultivated eggplant varieties were identified against bacterial wilt and the graft compatibility of eggplant varieties was studied with wild Solanum rootstocks. Solanum torvum and Solanum sisymbriifolium showed resistance against bacterial wilt. Most of the cultivated varieties showed susceptibility against bacterial wilt. Three cultivated eggplant varieties viz. sufala, singnath and uttara were grafted on Solanum torvum and Solanum sisymbriifolium. The highest grafting success was 95% in case of Solanum torvum x sufala and the lowest 85% in Solanum sisymbriifolium x singnath. The success of grafting was not affected significantly due to the effect of scion and rootstocks. The grafted plants showed resistance against the disease while the scion plants showed susceptibility in the sick beds. The grafted plants also showed resistance reaction against the disease in the field conditions. The fruit maturity was delayed due to grafting but grafting at least 15 days prolonged the harvesting period. The grafted plants also out yielded the scion plants. The grafting combination Solanum torvum x sufala gave the highest yield compared with other grafting combinations and non-grafted plants.
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