Effect of water quality on K-release of some calcareous soil in Erbil governorate-Kurdistan region-Iraq

Other Title(s)

تأثير نوعية المياه في تحرر البوتاسيوم لبعض ترب الكلسية في محافظة أربيل إقليم كوردستان-العراق

Joint Authors

Aqrawi, Haifa S.
al-Ubaydi, Muhammad A.
Ismail, Akram Uthman

Source

مجلة جامعة دهوك

Publisher

University of Duhok

Publication Date

2016-06-30

Country of Publication

Iraq

No. of Pages

7

Main Subjects

Agriculture

English Abstract

A laboratory study was conducted to determine the effect chemical composition of irrigation water on potassium desorption kinetics in some calcareous soils.

It was constructed by miscible displacement technique with natural un-disturbed soil columns using three water quality from (Chakhmera, Chilhaweza and Makhmur) via three different textured soils from Shawes, Melaomer and Ankawe location in Erbil governorate for ten irrigation epochs .

Results indicated for higher values of desorbed potassium rate with increase of porosity volumes passed through soil columns.

Chihaweza water quality caused more desorption of potassium in comparison with Chakhmera except in Malaomer location.

Desorption capacity rate were 410, 558 and 407 mg kg-1 soil for Shawes, Melaomer and Ankawe respectively by using Chilhaweza, while desorbed K+ by Chakhmera water the same location were 266, 1008, and 276 mg kg-1 soil, and the desorbed K+ by using Makhmur water quality was 120, 609 and 170 mg kg-1soil respectively by using the same location sample.

Mathematical description for desorption process appeared harmony of power function equation and first order equation, while diffusion equation, zero order equation and Elovitch equation cannot describe desorption process with the same efficiency.

K+ desorption rate due to power function equation by using Chakhmera water quality were 0.699, 0.789 and 0.765 mg kg-1 min-1 for Shawes , Melaomer, and Ankawe location respectively, while using Chilhaweza water desorption rate which were 0.712, 0.878 and 0.680 mg kg- 1 min-1 and while desorption rate value for Makhmur water were 0.945, 0.560 and 0.590 Ln mg kg-1min-1 for the same locations respectively.

Data Type

Conference Papers

Record ID

BIM-797937

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