Behavior of Added Phosphorus to Different Soil types in Deir Ezzor Governorate –Syria

The purpose of this search was to determine the quantity of phosphate adsorbed in different soil types (calcareous, gypsum, sandy and alluvial) and to study the fitting of Langmuir isotherms equation to describe the P-adsorption process. The Langmiur equation was non-fitting to describe the P-adsorbed on tested soils when the added-P was more than 80 mg P/L, due to the interference between the adsorption process and precipitation reaction. The statistical correlation coefficients (R) between the amount of P-adsorbed and P-concentrations in solution after equilibration were significant and ranged from 0.927 (for calcareous soil) to 0.973 (for sandy soil).Calculated Phosphorus adsorption maximum varied widely, ranging from 23.15 mg/Kg soil (for sandy soil) up to 56.50mg/Kg soil (for calcareous soil) mg P/kg soil.