The efficiency of intermittent and continuous leaching of salt affected soils
Keywords:
Intermittent leaching, continuous leaching, leaching columns. exchangeable sodium. leaching methods, Leaching efficiency.Abstract
In this study the efficiency of intermittent and continuous leaching methods of two types of soil, saline soil (S1) and saline sodic soil (S2) from Taworgha Agricultural Project were investigated. Two different pore volumes of good water quality (EC 0.029 mmhos / cm at 25C, PH 6.6) and the concentration of soluble cations for Na+, K+, Ca+2, Mg+2, Cl- were (0.060, 0.001, 0.050, 0.225 and 0.325 meq /l respectively). This water quality was used in 2 and 6 PV. The experiments were carried out by using leaching columns. The results indicated that the efficiency of intermittent leaching was higher compared to continuous one. These results may be attributed to the replacement of soluble calcium ions in place of exchangeable sodium ions in soils under study.
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