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Articles by M.A.H. Khan
Total Records ( 3 ) for M.A.H. Khan
  M.A. Awal and M.A.H. Khan
  Mulching effects of sawdust, ash, rice straw and water hyacinth on the morpho-physiological differentation of maize (Zea mays L.) and to relate these with soil environment were described. Water hyacinth and rice straw mulches had significant promotive effects on shoot elongation, root penetration, LAI and DM accumulation. All mulches conserved soil moisture but water hyacinth and rice straw retained comparatively greater amount. Water hyacinth and rice straw mulches reduced soil temperature fluctuations in all soil depths (5 to 15 cm) and retained higher soil temperatures at the early hours of the day (02 to 06 hrs) which were considered to be the decisive factor for the rapid development of maize plants. Sawdust mulch due to the lower soil temperature had retardive effects on all morpho-physiological attributes. Ash mulch ranked intermediate between the rice straw or water hyacinth and the control.
  M. Ashrafuzzaman , M.A.H. Khan , S.M. Shohidullah and M.S. Rahman
  A pot culture experiment was conducted with five levels of salinity (EC 0, 2.0, 4.0, 6.0 and 8.0 dSM-1) obtained by dissolving NaCl in distilled water to study the effect of salinity on chlorophyll content, yield and yield components of Quality Protein Maize (QPM) CV. Nutricta. Ear length, ear diameter, number of seeds per ear and 100 seed weight were also reduced at high salinity levels. Increasing salinity decreased the content of chlorophyll a, chlorophyll b and total chlorophyll and had little or no effect on chlorophyll a/b. A gradual and significant decrease in nitrogen and potassium contents was recorded in maize shoot and grain with an increasing salinity. Accumulation of N+ and K+ in grains were smaller than in shoot or straw. Due to its high yield potential I normal soil and high yield reduction in salinity it is regarded as a highly saline sensitive crop.
  M. A. Awal and M.A.H. Khan
  Mulching effects of sawdust, ash, rice straw and water hyacinth on growth, dry matter partitioning, earliness, yield attributes and yield of maize were studied. All mulches except sawdust significantly influenced the SLA, CGR, NAR and DM partitioning, but with no apparent effect on RGR. Water hyacinth and rice straw mulches hastened the tasseling, silking and maturity time by 6, 8 and 8 days respectively and produced double the amount of biological and economic yield as compared to the control and sawdust, the ash mulch behaved intermediately. Significantly higher harvest index was also observed under water hyacinth and rice straw mulches.
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