Faculty of Biological Sciences: Recent submissions

Now showing items 641-660 of 983

Atmospheric toxic gases and their probable impacts on public health and crop production

Jahan, Sharmeen (University of Dhaka, 2018-05-30)

Bangladesh ranked fourth among 91 countries with the worst urban air quality in the latest air pollution monitoring report by the World Health Organization. Data from the National Institute of Diseases of the Chest and ...
Impacts of effluents and wastes of shrimp processing industries on soil and water environment in and around Khulna city

Motasim Billah, Saikh (University of Dhaka, 2017-06-14)

Dumping of solid and liquid wastes without treatment is a common practice and of great concern in Bangladesh. Most of the industries in Bangladesh do not follow the environmental compliance for ETP in their plants and ...
Toxicity of heavy metals in soils and crops and its phyto-remediation

Islam, Md. Mahmudul (University of Dhaka, 2016-09-28)

Soils, water and crops contaminated by heavy metals and other environmental toxins from different industrial wastes and wastewaters in and around Dhaka are producing unhealthy food through entering into the food chain, ...
Analysis of prevailing and potential land use system and human carrying capacity of land resources of Nakla Upazila for sustainable development

Sultana, Kaniz Aklima; Sultana, Kaniz Aklima (University of Dhaka, 2016-08-21)

The study was conducted in Nakla Upazila of Sherpur zila, to see the prevailing land use system and potential production capacity of the land resources with an aim to estimate human carrying capacity of the area and to ...
Impact of poultry litter on soil properties and production of jute

Nasimul Gani, Md. (University of Dhaka, 2015-05-11)

Experiments were carried out at Manikganj and Kishoreganj during the year 2004-05 to 2007-08 under Sonatala and Silmondi soil series of Bangladesh. The soils of the Manikganj experimental field represents the Non Calcareous ...
Effect of liming, phosphorus and ammonium sulphate on ammonification and nitrification in peat

Mandal, R.; Parsons, J. W. (Pak. J. Sci. Ind. Res., 1989-09)

Mincralizalion of native N in an cxticmcly acid [x^l following liming and addition of P and (NH^)jSO^ was ijivesligalaJ. All Uic UcaUncnLs increased NM^-N uplo 20 days inculiation followed by a rapid d c c T e a s e lo a ...
Influence of aluminum on pH and recovery of exchangeable aluminum from peat

Mandal, R.; Parsons, J. W. (Pak. J. Sci. Ind. Res., 1989-03)

Incubation experiment was conducted to obtain infomiation on tlie extent of acidity developed due to added AlCI, (0, 25, 50 and 100 tig g ') at different pH levels and changes in exchangeable A1 in peat. Results showed ...
Amounts and mineralization of organic phosphorus compounds and derivatives in some surface soils of Bangladesh

Islam, A.; Mandal, R. (Elsevier Scientific Publishing Company, 1977)

Concentrations of a few organic phosphorus compounds and their hydrolysis products have been determined in a number of Bangladesh soils. The amounts of DNA and its derivatives, inositol penta- and hexaphosphates, ranged ...
Effect of chlorides of cobalt, nickel and copper on nitrification in peat

Mandal, R.; Parsons, J. W. (Pak. J. Sci. Ind. Res., 1989-09)

Mineralization of N in ihe presence ofO to 2000 mg kg ' each of Co. Ni and Cu as chlorides in peat was studied. Tliese s;dts of metals did not produce any significant change in tlie proccss of niLrificalion and ammonificalion ...
Release of sulphate sulphur from gypsum and elemental sulphur in soil under submerged condition

Mandal, R.; Hossain, M. S. A.; Islam, R. (Dhaka University Studies, 1986-01)
Conversion of urea placed at different depths and its subsequent impact on growth and yield of rice

Islam, A.; Mandal, R.; Ahmed, Z.; Rashid, M. H. (Indian J. of Agric. Sci., 1980-11)

In a study on the effect of urea with depths in rice {Oryza sativa Linn.), conversion of urea into NHj-N was maximum at 15 days in most of the treatments and into NOj-N was at 7 days. But with surface placement of urea it ...
Mineralization of inositol penta and hexaphosphates in some soils of Bangladesh

Mandal, R.; Islam, A. (Bangladesh J. Sci. Res., 1977)

The nature of iP;, and changes iP^ in Bangladesh soil* has been examined. Mineralization of iP^ and ipj was found at all moisture levels cither alone or with lime. A rapid mineralization occurred in the first 30 days ...
Influence of aluminum chloride on nitrification in teat

Mandal, R.; Parsons, J. W. (Pak. J. Sci. Ind. Res., 1990-03)

The of feel of iilumiiiiiimon atnniDnificalion and nilriHcalion was slucliod in a series of incubalionsof peal with ;uk1 williout added (Nll,)jSO,. Addition of AlCI, (0, 200, 4(X), 600 jig A! « ') caused a iionsigniricaiii ...
Effect of aluminum, iron and manganese on nitrification in peat

Mandal, R.; Parsons, J. W. (Srilankan Journal of Agricultural Sciences, 1989)

Nitrification in the presence of 0 to 3000 pg of each of Al, Fe and Mn as chlorides in peat (g ) has been studied. About up to 40 days the added elements could not produce any appreciable change in the processes of N ...
Characterization and categorization of Azotobacter and related microorganisms of Bangladesh soils

Mandal, R.; Parsons, J. W. (Bangladesh J. Sci. Res., 1989-12)

Free.living nitrogen fixing bacterial isolates were purified from eleven soil samples representing eight typical zones of Bangladesh. The isolates were categorized on the basis of their colonial, morphological and ...
Influence of lime, nitrification inhibitors and soil infusion on nitrification in peat

Mandal, R.; Parsons, J. W. (Bangladesh J. Sci. Res., 1989)

lx an th ate, KEtX) an d soil in fu sio n o n N mineralization in a n acid p eat was stu d ied . Release o f NH^-N in c re a sed significantly with pH. Accumulation of 599 to 803 mg NH^-N/kg occurred a t pH 3.4 an d 6.5, ...
Influence of lime and soil infusion treatments on nitrification of native and added ammonium nitrogen in peat

Mandal, R.; Parsons, J. W. (Dhaka University Studies, 1989)

Nitrification under acid conditions in peat was studied. Application of lime increased nitrification in commercial peat. Release of mineral nitrogen increased rapidly with pH. A significant amount of NH4-N was released up ...
A study of availability of soil nitrogen by various extractants

Hossain, A. K. M. A.; Hoque, S.; Mandal, R.; Khan, T. H. (Bangladesh J. Sci. Res., 1989)

Available nitrogen was determined using 11 extractants on 29 soils covering a wide range of physical and chemical properties. Assessment of 2M KCI (p H 7.0), IN NaCI, IN NaCI (pH 1.0), 2N NaCI, IN Na2S04 ( p H l .O ) , ...
Impact of foliar application of growth promoters (KNap and GA3) and Nutrients on ZEA MAYS

Farid, A. T. M.; Mandal, R.; Ahmed, A. H. M.; Mohsin, M. (Nuclear Science and Applications, 1989)

Foliar application of potassium naphthenate, gibberellic acid and nutrients made separately, or in combination with nutrients caused significant increase in various growth indices (except height and leaf number) and yield ...
Comparison of methods to evaluate k availability in rice soils

Islam, A.; Hoque, S.; Mandal, R.; Chowdhury, S. A. (Srilankan Journal of Agricultural Sciences, 1988)

tions have been used to evaluate K availability from 29 rice soils. Of the methodsy boiling IN HNO^ extracted the highest amount of available K. The methods may be arranged as boiling IN HNO2 > hot 1.4N H^SO > IN Na^SO. ...

Now showing items 641-660 of 983

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