Phosphorus supply parameters of dif-ferent soils in ُErbi Governorate Iraqi Kurdstan Region

Abstract EN

The purpose of this study soil samples were to investigate of Phosphors supplying parameters by using mechanism of sorption phenomena 12 calcareous soil from Erbil province in Kurdistan region northern of Iraq classified (Calciorthids soils).

The experiment was conducted by using different levels of Phosphors solution (0, 5, 10, 50, 75, 100, 150 and 200) µg P.

ml-1 under isotherm reaction (298 K) as KH2PO4 using batch method.

The adsorption values were described by using Langmuir equation to find Phosphors supplying parameters.

The results showed all studied oils were alkaline, non saline high carbonate and low organic contents also the concentration of adsorption were increased by an increasing of Phosphors levels were added to soils According to Langmuir equation, the maximum adsorption of Phosphors (II) on the studied soils (Xm) ranged from 70 to 84 (mg.

kg-1( and bonding energy of (k) ranged from -1.35 to 2.9 (L.

mg-1) also the results showed that Phosphors supplying parameters were ranged from 26.19 to 32.9 at the location 1, 6 respectively.

Key Words: Phosphate Supplying, Calcareous Soils