Compared the measure and predicted saturated hydraulic conductivity by Soilpar2 for some soils

Abstract

Eight locations, four of them at the university of Mosul (L1, L2, L7and L8), Al-Shalalat (L3), 
Baybokh (L4), Khorsobad (L5) and Al-phathlia (L6) were chosen different in vegetation cover at 
Nineveh governorate. To determine the saturated hydraulic conductivity and compared with saturated 
hydraulic conductivity by using Soilpar2 program at four depth. soil samples were collected and air 
dry, then sieved by 2 mm sieve. Physical and chemical properties were determined. Saturated 
hydraulic conductivity was determined by Constant head method. Soilpar2 was used to predicted 
Saturated hydraulic conductivity by using Jabro, Jaynes-Tyler and Puckett. Jabro and Jaynes-Tyler 
methods were depend on soil particles, bulk density and soil depth. While Puckett methods depend on 
clay percentage and soil depth. Result reveal that the values of Saturated hydraulic conductivity 
predicted by Jabro were closed to the measure Saturated hydraulic conductivity. The reason was 
related to soil texture which effect on both measure and predicted hydraulic conductivity. While the 
values predicted by Jaynes-Tyler were closed to the measure values at L1, L2 and L3. The reason for 
that related to the lower clay percentage and higher sand percentage. On the other hand, the values of 
hydraulic conductivity predicted Puckett were closed to the measure values at locations were contents 
high clay particles