Matric potential at wetting front as a function of soilwater properties

This study was conducted at three locations differ in their textures and land uses at Nineva Governorate to estimate the matric potential at wetting front under field condition for both planted / unplanted soils, by applying some equation depends on hydraulic functions during water infiltration in double ring infiltrometer. Results indicated that the values of matric potential at wetting front as a function of volumetric water contents were more accurate than the values of matric potential as a function of the hydraulic conductivity . On the other hand , results indicated that the value of matric potential as a function of both soil texture , saturated and unsaturated hydraulic conductives were diffrent. Also, the value of matric as a function of measured and calcluted air- entry were relatd to pore size distribution .