The Effect of Soil Depth and Adding Soil Conditioners on Aggregates Stability of Clay Soil by Using Drip and Surface Irrigation Systems

علوم زراعية

Abstract

       A field experiment was conducted in one of the agricultural research fields in Basra Governorate on clay soil, for the purpose of studying the effect of soil depth and adding soil Conditioners that included bitumen emulsion (1%) and organic matter (3%) on the aggregate stability of the soil and by using drip and surface irrigation methods. The results showed that there were significant differences due to the effect of varying soil depth, as it was observed that the mean weight diameter (MWD) values of soil ​​decreased with increasing depth, and the addition of soil conditioners led to a significant increase in the mean weight diameter values. The results also showed that the use of drip irrigation maintained soil structure as a result of a significant increase in the values ​​of the mean weight diameter compared to surface irrigation.