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Articles by S. M. Alam
Total Records ( 3 ) for S. M. Alam
  S. M. Alam and A. Shereen
  Water culture experiment was conducted to observe the effects of different levels of zinc and phosphorus alone and in combination on wheat (cv. Sarsabz). The concentration for the study were Zn: 0.0, 5.0, 10.0 and 20.0 mg -1, and P 0.0, 20.0, 40.0, 60.0 mg -1. it was observed that the growth of fresh and dry weights of wheat shoot and its length were increased in more or less all the treatments as compared to control. Contrary to this reverse trend was found with root growth irrespective of treatments. The chlorophyll contents were generally increased at the lower level of Zn and P, while at the higher Zn and P levels the chlorophyll contents were decreased as compared to control.
  S. M. Alam and R. Ansari
  Rice plants growing on a calcareous soil, supplied with various levels of labeled Fe59 and Mn54 subjected to two moisture regimes and under flooded(anaerobic) condition, the number of tillers, plant height, dry matter yield and contents of Fe, Mn and P in rice plants increased considerably indicating that soil submergence enhanced the availability of Fe, Mn and P in the growth medium. Mn content in the plant under flooded condition was always higher than that of Fe under similar condition. Unflooded (aerobic) condition showed less growth and nutrient contents in rice plants than the flooded (anaerobic) condition.
  Muhammad Akhtar and S. M. Alam
  The results showed that by increasing the time of incubation, P availability in soil gradually decreased for both organic (DCP) and inorganic (SSP) sources. Phosphorus sorption irrespective of source, however, increased with incubation time. SSP compared to DCP yielded more AB-DTPA extractable P up to day 7, P content of SSP after day 14 became equal to that of DCP, and there after declined. After day 56, as much as half of P from SSP was sorbed out compared to 1/4th of P from DCP. Thus a readily soluble P source (SSP) was more affected to sorption under an alkaline calcareous soil environment compared to slowly soluble P source (DCP) which maintained P availability in soil for a longer period of time.
 
 
 
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