Effect of physical and chemical properties of normal soils on hydraulic conductivity values as measured by different methodslh[electronic resource].

Includes references.

Four soil profiles representing normal soils( non-saline non-sodic) were taken at Byalla district (Kafr El-Sheikh governorate) to study the relationship between physical and chemical properties of the soil and values of hydraulic conductivity as determined by three different methods (constant head, falling head and auger hole). Simple and multiple linear regression relationships were conducted between values of saturated hydraulic conductivity (Ks) and the different physical and chemical properties of the soil .The important results could be summarized as follows: 1- Ks as measured by constant head was affected by aggregation conditions and showed a highly significant positive correlation with each of water stable aggregates >0.25 mm (R2 = 0.6814**) , aggregation index (R2 = 0.6383**) and mean weight diameter (R2 = 0.6439**). A highly significant positive correlation was found between Ks and both soluble Ca++(R2 =0.6309**) and exchangeable Mg (R2 =0.5577**). Multiple linear regression between the above- mentioned chemical properties of the soil and Ks showed a significant correlation coefficient (R2=0.9340*). It is obvious that soluble Ca++ is the most effective chemical parameter which affect Ks.

Summary in Arabic.

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