Faculty of Biological Sciences: Recent submissions

  • 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. ...
  • Impact of NPK fertilizers on mustard ( brassica juncea coss )iii. Oil and nutrient content of seeds 
    Elahi, S. F.; Mandal, R.; Ahmed, A. H. M.; Hussain, M. M. (Nuclear science and applications, 1984)
    A field experiment following a pirtie.lly c D n t o u n d e d design w j s conducted to study the effect of NPK fertilizers on the oil and N, P, K, Ca and Mg contents of mustard seeds. Fertilizers showed an increase in oil ...
  • Effect of NPK fertilizers on yield of oil and npk contents of sesame seeds (Sesamum indicmt) 
    Mandal, R.; Ahmed, A. H. M.; Elahi, S. F.; Banik, G. G. (Nuclear science and applications, 1984)
    A pot experiment was designed in a 3® factorial combination with partial confounding to measure th« effect of N ( 0, 90, 180 kg/ha ), P and K ( each at 0, 22, 44 kg/ha ) on yield of oil and NPK contents of sesame seeds ( ...
  • Effect of NPK fertilizers on the growth 4nd yield of sesame (Sesamum indicum) local cv. T6 
    Elahi, S. F.; Mandal, R.; Banik, G. G. (Dhaka Universiry Studies, 1986-01)
    Application of N alone produced a considerable increase in vegetative growth. However, N in the presence of P resulted comparatively higher growth. The best growth was recorded where 90 kg N and 44 ka/ha each of P and K ...
  • Influence of Azotobacter inoculation on the availability of nitrogen in soil 
    Khan, S. I.; Mandal, R.; Ali, F.; Ahmed, A. H. M. (Dhaka Universiry Studies, 1988-07)
    The change of N in the availability pool was sigmoidal with control and P; sinusoidal with inocula and P as well as with organic matter and P. The response was quasi-sigmoidal with organic matter and inocula. Amongst the ...
  • A study of slow-release N-carrters on rice 
    Rashid, M. H.; Islam, A.; Ahmed, I. U.; Islam, M. S.; Mandal, R. (Journal of Bangladesh Academy of Sciences, 1987)
    A field experiment was carried out to monitor the relative efficiency of urea, urea formaldehyde (UF), sulphur coated urea (SCU) and isobutylidene diurea (IBDU) each at the rate of 40, 80 and 120 kg N/ha on growth, yield ...
  • The influence of Azotobacter inoculation on the availability of phosphorus in soil 
    Ahmed, A. H. M.; Khan, S.I.; Mandal, R.; Ali, F. (International Journal of Trop., Agri., 1987-06)
    The influence of the two species of Azotohacter (A. chroococcum and A. macrocytogenes), phosphorus, organic matter, and their combinations was examined on available P under laboratory conditions. In all the treatments ...
  • Impact of NPK fertilizers on mustard ( Brassica Juncea coas ) II. Yield components 
    Ahmed, A. H. M.; Elahi, S. F.; Mandal, R.; Hussain, M. M. (Nuclear Science and Applications, 1984)
    Accumulation of dry matter and yield of mustard seeds have been observed from a NPK field trial experiment. Addition of nitrogen significantly increased the production of dry matter at 35 days of growth. Higher the rate ...
  • Impact of NPK fertilizers on mustard ( Brassica Juncea coas ) 1- Growth parameters 
    Elahi, S. F.; Ahmed, A. H. M.; Mandal, R.; Hussain, M. M. (Nuclear Science and Applications, 1984)
    Growth component of mustard plant ( Brassica juncea coss ) have been studied from a NPK field experiment. Addition of nitrogen significantly increased the height, number of branches and pod per plant. Phosphorus also had ...
  • Mineralization of inositol phosphate, phospholipids and nucleic acids in soil under waterlogged condition 
    Mandal, R.; Islam, A. (Nuclear science and applications, 1984)
    Soil samples incubated with each of potassium dihydrogen phosphate, ammonium sulphate, compost, glucose and lime under submerged condition resulted rapid mineralization of inositol phosphates, phospholipids, inositol ...
  • Availability of soil organic phosphorus to crops 
    Mandal, R.; Islam, A. (Nuclear science and applications, 1984)
    The influence of each of potassium dihydrogen phosphate, ammonium sulphate, compost and glucose at the rate of 100 kg ha -i and liming of soil to pH 7.0, on the uptake of phosphorus from organic fraction by rice, jute, ...
  • Impact of NPK fertilizers on the growth, yield and oil content of sesame (Sesamum Indicum ) 
    Farid, A. T. M.; Ahmed, A. H. M.; Mohsin, M.; Mandal, R. (Nuclear science and applications, 1979)
    A pot experitneiu was conducted in a 3^ factorial design with partial confounding to evaluate the effect of HPK on S e s a m u m indicum ( var. Ganga ). NPK did not signiHcintly affect the height of the plant in the eatly ...
  • Distribution of organic phosphate compounds in some soil profiles of Bangladesh 
    Mandal, R.; Islam, A.; Osman, K. T. (Bangl. J. Sci. Res., 1980)
    Inositol phosphate, phospholipid^ ribonucleic acid and deoxyribo nucleic acid along with their derivatives decreased gradually with depth in the profiles, while their variable amounts were jointly correlated with organic ...
  • Inositol phosphate esters in some surface soils of Bangladesh 
    Mandal, R.; Islam, A. (Elsevier Scientific Publishing Company, 1979-01)
    Concentrations of inositol mono-, di- and tri-, tetra-, penta- and hexaphosphate ranged from 5.0 to 12.5, 10.0 to 27.6, 20.0 to 45.0, 22.5 to 64.6, and 20.0 to 275.4 ppm, respectively, in samples of soils that were poorly ...
  • Direct absorption of organic phosphate by rice and jute plants 
    Mandal, R.; Islam, A.; Osman, K. T. (International Journal of Plant Nutrition, Plant Chemistry, Soil Microbiology and Soil-Borne Plant Diseases, 1979-10)
    Appreciable amounts of organic phosphate from calcium glycerophosphate, lecithin, sodium phytate and inosine-5-monophosphate were absorbed directly by rice plants and that from calcium glycerophosphate and lecithin by jute ...
  • Occurrence of hydrolysis products of phospholipids in some sub-humid tropical soils of Bangladesh 
    Mandal, R.; Islam, A. (Dacca University Studies, 1979-01)
    Hance and Anderson's method for determining lipid pliosphate was found best among the four methods used due fo double over-night pretreatments. Air-dried samples yielded lower lipid values than the fresh ones due to changes ...
  • Effect of sulphur upon plant response to phosphate 
    Mandal, R.; Islam, A. (Dacca University Studies, 1976-01)
    Native sulphur is supplemented by variable additions from rainwater, irrigation water, fertilizers and insecticides. Sulphur d e ficiency, however, still exists in many parts of the w oild and could be overcome for high ...
  • Vertical distribution of phosphate in some sub-humid tropical soils of Bangladesh 
    Mandal, R.; Islam, A. (Dacca University Studies, 1978-01)
    The distribution of organic, inorganic and total pliosphates and the reasons of their variation in a number of sub-humid tropical soil profiles has been examined- An appreciable amount of phosphate was found in the surface ...

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