Authors : Akram Othman Esmail¹ & Shwana Abdlla Khdir^2
1&2University of Salahaddin, College of Agriculture, Department of Soil and Water, Erbil, Iraq

Abstract:   This study was conducted during August 2015 to June 2016, which included studying some physicochemical properties of the soils of 14 locations at Bewain plain. The main results were summarized as follows: The range of soluble, exchangeable, and total potassium were (0.04-0.38 mmol_c.L^-1), (0.03- 0.11mmol.kg ^-1) and (0.59-1.28 mmol_c.L ^-1) for the studied soils respectively. The values of potassium activity ratio ARK and potassium free energy (ΔG) were (0.001 to 0.002 mmol.L^-1)^0.5 and (- 5142 to -6411 cal mol^-1) respectively. The amount of adsorbed, desorbed, desorption index (DI) and hysteresis of K+ for the studied soils were ranged between (594.4 – 1081.2), (335 – 738), (0.68 – 0.99) and (344.6 – 156.8) mg.kg^-1 respectively. The ratio between (initial soluble K⁺ concentration, total K⁺ , Ca²⁺ , Mg²⁺ , Na⁺ , HCO₃^–, Cl^-1 , SO₄^2-, AR^K, Exchange able K⁺, adsorbed K⁺ , desorbed K⁺ , K⁺ Hysteresis, DI, pH, CEC, EC, ΔG, CaCO₃ and Organic matter) for irrigated soils to non irrigated soils were (2.11, 1.08, 1.51, 1.02, 1.42, 1.14, 1.28, 1.68, 2.00, 1.17, 1.13, 1.09, 1.25, 1.01, 1.01, 1.57, 1.43, 0.92, 0.76 and 1.13) respectively.

Keywords:   Primitive Groups, Indecomposable Meromorphic Functions, Genus Systems

doi: 10.23918/eajse.v3i2p10

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