The effect of saline water,gypsium content in soil on saturated hydraulic conductivity and height of capillary water
ANBAR JOURNAL OF AGRICULTURAL SCIENCES,
2007, Volume 5, Issue 2, Pages 1-11
AbstractThe effect of saline water and gypsium content in soil on saturated hydraulic conductivity and capillary rise of water were studied in laboratory. Two soil were chosed with different gypsium content, they were mixed with certain percentage to get soils with gypsium content 0.98, 92.8, 184.6, 276.4, 368.2, 460.0 gm.kg-1. Saline water solutions were prepared by mixing NaCl and CaCl2 with distilled water to get two values for EC (2.5,5.0) ds.m-1 and two values for SAR (5,15). Saturated hydraulic conductivity and capillary rise of water were measured.
Results indicated increasing in saturated hydraulic conductivity values significantly with increasing in gypsium content of soil and values of EC at each level of SAR, when saturated hydraulic conductivity values decreased with increasing in SAR at each level of EC for all levels of gypsium content, but opposite happen for gypsium content 460.0 gm.kg-1.
Capillary rise of water decreased with increasing in gypsium content of soil and SAR at each level of EC, while the increasing in EC at each level of SAR caused increasing in capillary rise of water for each content of gypsium.
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