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Articles by M. Belkhodja
Total Records ( 2 ) for M. Belkhodja
  A. Mekhaldi , M. Benkhelifa and M. Belkhodja
  In this study, we have put in a experimental pot, a plant of Mung bean (Vigna radiata L. Wilczek), this latest is subjected to salinity stress (NaCl + CaCl2) during four stages of its growth (juvenile stage (5 leaves), flowering stage, after flowering stage and pod setting). Three concentrations of salt solution 100, 200 and 300 meq L-1 and the control (Hoagland solution) were used in irrigation. Exchangeable oxygen was determined in leaf discs and isolated chloroplasts of the stressed plants during respiration and photosynthesis processes. Results indicated that the quantity of the exchangeable oxygen during respiration increases with the increase of salinity concentration. Contrarily, the exchangeable oxygen during photosynthesis decreased with increasing salinity concentration.
  M. Benkhelifa , M. Belkhodja , Y. Daoud and D. Tessier
 

This research has for object to study the influence of clay addition, i.e., Maghnian bentonite, like deposit clay, in the physical properties of sandy materials from Mostaganem plateau (North-West Algeria) submitted to salinity and sodicity. The first result was to show that the clay content changes drastically the physical properties of clay-sand mixtures. Important differences were observed as a function of the sand particle size distribution. At given clay content, the saturated Hydraulic Conductivity (HCs) was lower when the sand size was small and spread. For the coarse sand the salinity was maintained, even for high clay contents, a significant hydraulic conductivity. One of the main characteristics of Maghnia clay is the presence of calcium carbonates in the natural material. In comparison to that of Mostaganem clay of other deposit, it appears less sensitive to sodicity. An important aspect is the initial state of the clay when used in addition to sands, i.e., disturbance, conditions of preparation of sand clay mixtures and presence of associated components such as carbonates. Maghnia clay appeared to be adapted to the improvement of sandy soils, not because its mineralogical characteristics, but for its natural cationic form and obviously the presence of calcite in it.

 
 
 
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