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Articles by M.A. Matin
Total Records ( 6 ) for M.A. Matin
  S.M.K. Alam , M.A. Matin , M.A. Hossain and M.K. Uddin
  A field experiment was carried out to study the effect of different tillage practices on some soil physical and chemical properties. The soil was calcareous grey belonging to Sonatala series of Old Brahmaputra flood plain soil. The treatments comprised of To, T1(CP2), T2(CP3), T3(CP4), T4(PT2), T5(PT3) and T6(PT4). The bulk density (1.20 g cm -3) was h igher in To(no tillage) treatment than that of any other treatment. The lowest bulk density (0.86 g cm -3) was found at T6 (PT4) treatment. Bulk density significantly varied within the depths. The highest bulk density was recorded in 20-30 cm soil depths and the lowest was 0-10 cm soil depth. Air filled porosity and soil moisture content increased remarkably by T6(PT4) treatment compared to control. The highest organic matter was 1.60% and the lowest was 0.78% under To(control) and T6(PT4) treatment respectively. The NH4-N, available S, exchangeable K significantly influenced due to tillage operation whereas NO3-N, available P and exchangeable Ca did not respond significantly. Available N, P, S, exchangeable K and Ca decreased with the increasing of depth.
  S.M.K. Alam and M.A. Matin
  A field experiment was carried out to study the effect of different tillage practices on root growth and yield of rice in silt loam soil. The soil was calcareous gray belonging to Sonatala series of Old Brahmaputra flood plain soil. The treatments comprised of no tillage-(To), T1 (CP2), T2 (CP3), T3 (CP4), T4 (PT2), T5 (PT3) and T6 (PT4). The highest root mass density of 2.66 mg cm -3 and the lowest root mass density 0.90 mg cm -3 were found under T6 (PT4) and To (control) respectively. The maximum root mass density (4.22 mg cm -3) was recorded at 0-10 cm depth of soil. The root density drastically reduced at the deeper depth. Tillers number/hill, plant height, panicle length, number of grains/panicle, grain and straw yield at different tillage practices significantly increased over control. The T3 (CP4) gave the highest plant height (95.93 cm) among all treatments. The highest grain yield (5969.25 Kg ha -1) was found under T6 (PT4) whereas the lowest yield (1451.03) was obtained in control treatment. The grain yield shows a highly positive significant relationship (r=0.993) with root mass density.
  M.A. Alam , M.A. Matin , M.M. Hoque and A.T.M.R. Hoque
  In the present investigation the growth performance of Ipil-Ipil (Leucaena leucocephala (Lam.) de wit.) seedling was studied under different conditions in the nursery. In dry season, the growth is poor, but starting the wet season, there was sharp rise in growth. In height and diameter growth, Seedbed under peat with cowdung mixture showed the best result, then polybag and plastic tray in all the media. In all types of containers, peat with cowdung mixture showed the best result. Similarly seedling growth performances showed good relation with seasonal variations. Leaf production also showed the same trend with seasonal variations as well as growth performance.
  R. Mahmud , M.A. Matin and H. Otani
  Bovine milk β-lactoglobulin was found to induce proliferation of mouse resting spleen cells. Hence, the mitogenic activity was investigated in detail. The cell growth activity was measured by a colorimetric assay using 3-(4, 5-dimethylthiazol-2-yl)-2-5 diphenyl tetrazolium bromide (MTT). A reduced S-carboxymethylated β-lactoglobulin retained mitogenic activity towards mouse spleen cells and the mitogenic activity increased noticeably after digestion with gastrointestinal proteinases, in particular pancreatin. The pancreat n digest also induced proliferation of U266 cells, a human B cell line while it little influenced the growth of a human B cell line, Ball and human T cell lines Jurkat or Molt-3. These results suggest that bovine β-lactoglobulin may involve a mitogenic sequence(s) against some lymphocytes by the action of intestinal proteinases.
  M.S. Akter , M.A. Matin , M.F. Hossain , U.K. Majumder and S.C. Halder
  An experiment was conducted to evaluate the effect of tillage practices and nitrogen rates on the %N content in grain, straw and N uptake by grain, straw, plants in rice var. Binasail. The %N content in grain, N uptake by grain and total N uptake by plant were significantly influenced by different tillage practices. Maximum N content in grain (1.12%), N uptake by grain (34.54 kg ha-1) and total N uptake by plant (43.23 kg ha-1) were observed in 20 cm deep tillage treatment (T2). Minimum N content in grain (1.09%), N uptake by grain (26.87 kg ha-1) and total N uptake by plant (35.41 kg ha-1) were found in no tillage treatment (T0). The nitrogen content (%) in grain and straw, N uptake by grain and straw and total N uptake by plant were also significantly influenced by different rates of nitrogen application. The maximum N content in grain (1.17%) was recorded in no nitrogen (N0) and the minimum (1.04%) with the application of 105 kg N ha-1 (N3). The interaction effect of tillage operations and nitrogen application on %N content in grain, straw and total N uptake (kg ha-1) by plant found to be significant.
  A.K.M.M. Alom , A.S.M.H. Masum , Nazmun Nahar , M.A. Matin and A.K.M.J. Pasha
  Genetic diversity among 25 genotypes of maize were estimated by using Mahalanobis D2 statistic for eight characters. The genotypes were proposed into seven clusters. The inter-cluster distances were larger than the intra-cluster distance suggesting wider genetic diversity among the genotypes of different groups. The cluster III contained the highest number of genotypes. The cluster III also produced highest grain yield and 1000-grain weight. The highest inter cluster distanced was observed in between cluster III and II and of lowest between cluster IV and V. The highest intra-cluster distance was noticed in cluster IV and lowest for cluster VI.
 
 
 
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