Treated wastewater irrigation effects on soil hydraulic conductivity and aggregate stability of loamy soils in Israel

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Title:Treated wastewater irrigation effects on soil hydraulic conductivity and aggregate stability of loamy soils in Israel
Creators:
Schacht, Karsten; karsten dot schacht at rub dot de; Institute of Geography, Department of Soil Science and Soil Ecology, Ruhr-University Bochum, Universitätsstrasse 150, 44801 Bochum, Germany.
Marschner, Bernd; Institute of Geography, Department of Soil Science and Soil Ecology, Ruhr-University Bochum, Universitätsstrasse 150, 44801 Bochum, Germany.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 63, 1, pp. 47-54
Uncontrolled Keywords:hydraulic conductivity, soil aggregate stability, irrigation, treated wastewater, Israel

Abstract

The use of treated wastewater (TWW) for agricultural irrigation becomes increasingly important in water stressed regions like the Middle East for substituting fresh water (FW) resources. Due to elevated salt concentrations and organic compounds in TWW this practice has potential adverse effects on soil quality, such as the reduction of hydraulic conductivity (HC) and soil aggregate stability (SAS). To assess the impact of TWW irrigation in comparison to FW irrigation on HC, in-situ infiltration measurements using mini disk infiltrometer were deployed in four different long-term experimental orchard test sites in Israel. Topsoil samples (0–10 cm) were collected for analyzing SAS and determination of selected soil chemical and physical characteristics. The mean HC values decreased at all TWW sites by 42.9% up to 50.8% compared to FW sites. The SAS was 11.3% to 32.4% lower at all TWW sites. Soil electrical conductivity (EC) and exchangeable sodium percentage (ESP) were generally higher at TWW sites. These results indicate the use of TWW for irrigation is a viable, but potentially deleterious option, as it influences soil physical and chemical properties.

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Title:Treated wastewater irrigation effects on soil hydraulic conductivity and aggregate stability of loamy soils in Israel
Translated title:Treated wastewater irrigation effects on soil hydraulic conductivity and aggregate stability of loamy soils in Israel
Creators:
Schacht, Karsten; karsten dot schacht at rub dot de; Institute of Geography, Department of Soil Science and Soil Ecology, Ruhr-University Bochum, Universitätsstrasse 150, 44801 Bochum, Germany.
Marschner, Bernd; Institute of Geography, Department of Soil Science and Soil Ecology, Ruhr-University Bochum, Universitätsstrasse 150, 44801 Bochum, Germany.
Uncontrolled Keywords:hydraulic conductivity, soil aggregate stability, irrigation, treated wastewater, Israel
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:63
Number:1
Page Range:pp. 47-54
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:8410
Item Type:Article
Deposited On:13 May 2015 19:23
Last Modified:13 May 2015 17:23

Citation

Schacht, Karsten; Marschner, Bernd (2015) Treated wastewater irrigation effects on soil hydraulic conductivity and aggregate stability of loamy soils in Israel. Journal of Hydrology and Hydromechanics, 63 (1). pp. 47-54. ISSN 0042-790X

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