Abstract
In this work, the influence of solute concentration of two types of electrolyte solutions single-ion (Na) and mixed-ion (Na–Ca) systems on hydraulic and some physical properties of a clay soil was investigated. Saturated hydraulic conductivity (HC) declined noticeably using lower solute concentration in single ion system. The highest reduction in HC was observed at 250 molec m−3 solute concentration. Application of high solute concentration of single-ion system reduced meanweight diameter (MWD) to less than half of the control treatment (0.16 mm compared with 0.33 mm). Resistance to penetrometer increased with decreasing solute concentration. In mixed-ion system the MWD was increased whereas the resistance to penetrometer was decreased. HC values ranged from 6.5 × 10−4 to 9.0 × 10−4 mm s−1 in mixed ion system compared with 7.2 × 10−4 to 13.0 × 10−4 mm s−1 in single-ion system. The improvement of some physical properties in mixed-ion solution treatment is attributed to the presence of calcium ion that usually acts as amendment to sodium-affected soil. Soil HC showed lower values at low solute concentrations.
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Eltaif, N.I., Gharaibeh, M.A. Effects of Single and Mixed Ion Solutions on Hydraulic and Physical Properties of a Clay Soil. Water Air Soil Pollut 181, 297–302 (2007). https://doi.org/10.1007/s11270-006-9301-0
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DOI: https://doi.org/10.1007/s11270-006-9301-0