Effect of Different Magnesium Concentration inWater on Soil Characteristics and Determining the Critical Concentration

Usually, the impact of calcium and magnesium on improving and maintaining soil structure is assumed to be similar. This study was conducted to investigate the effect of different concentrations of magnesium on soil quality indicators. A clay loam soil was treated with fourconcentrations of magnesium (0, 1, 2, 3, 4, and 5 mmol/L) during 4 months in a completely randomized design with three replications. After this period, the mean weight diameter(MWD), wet aggregate stability(WAS) , clay dispersion (DS) and soil saturated hydraulic conductivity(KS )were measured. Analysis of variances showed that aggregate stability, hydraulic conductivity and clay dispersion significantly (p