IMPACT OF LONG-TERM IRRIGATION WITH KERMANSHAH MUNICIPAL TREATED WASTEWATER ON SOME SOIL PHYSICAL PROPERTIES

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FARMANIFARD MILAD; GHAMARNIA HOUSHANG; PIRSAHEB MEGHDAD; FATAHI NAZIR

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Journal: Journal of Water Research in Agriculture Year:2017 | Volume:31 | Issue:3 Page(s): 493-508

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Title

IMPACT OF LONG-TERM IRRIGATION WITH KERMANSHAH MUNICIPAL TREATED WASTEWATER ON SOME SOIL PHYSICAL PROPERTIES

Author(s)

FARMANIFARD MILAD | GHAMARNIA HOUSHANG | PIRSAHEB MEGHDAD | FATAHI NAZIR | Issue Writer Certificate

Keywords

BULK DENSITYQ1

PRACTICAL DENSITYQ1

SOIL MOISTURE CHARACTERISTIC CURVEQ1

SOIL PROSITYQ2

SATURATION HYDRAULIC CONDUCTIVITYQ2

WATER RESOURCES CRISISQ2

Abstract

Crisis of renewable water resources and rising demand for access to fresh water in arid and semi-arid countries is increasing. Therefore, it is indispensable to conserve water resources with high quality for urban purposes and drinking and use water resources with lower quality (such as treated wastewater) for other purposes such as agriculture and industry. In these conditions, having adequate information and local data in different parts of the world is essential. Thus, the main purpose of this study was to investigate the effects of two-year long-term irrigation with treated municipal wastewater in comparison with well water (as the control treatment) on the physical properties of soil. The soil physical properties were measured in three layers, each with three replications, and included SATURATION HYDRAULIC CONDUCTIVITY (Ks), SOIL MOISTURE CHARACTERISTIC CURVE, moisture content at field capacity ( qFC) and permanent wilting point (qPWP) as well as “available water”, bulk and PRACTICAL DENSITY, and porosity of the surface soil to depth of 90 cm. The study was conducted using a two-year split plot design. The results of statistical analysis showed that there was no uniform trend between various parameters and the influence of irrigation treatments at different depths of soil parameters were different. Results showed that the soil Ks in treatments irrigated with wastewater increased, compared to the control treatments, by 109%, 25%, and 75% in depths of 0-30, 30-60, and 60-90 cm, respectively. In addition, application of treated wastewater caused increase in the soil moisture content at qFC and qPWP point, but reduced the amount of total available water content. The effect of irrigation with treated wastewater decreased surface soil BULK DENSITY and increased its PRACTICAL DENSITY. Also, the soil porosity in the 0-30 and 30-60 cm layers was lower compared to the control treatment, but was higher in 60-90 cm layer. Generally, it can be concluded that the use of treated wastewater improves soil physical conditions, but the application of untreated sewage water and TWW for irrigation is not recommended for edible crops.

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APA: Copy

FARMANIFARD, MILAD, GHAMARNIA, HOUSHANG, PIRSAHEB, MEGHDAD, & FATAHI, NAZIR. (2017). IMPACT OF LONG-TERM IRRIGATION WITH KERMANSHAH MUNICIPAL TREATED WASTEWATER ON SOME SOIL PHYSICAL PROPERTIES. IRANIAN JOURNAL OF WATER RESEARCH IN AGRICULTURE (FORMERLY SOIL AND WATER SCIENCES), 31(3 ), 493-508. SID. https://sid.ir/paper/196826/en

Vancouver: Copy

FARMANIFARD MILAD, GHAMARNIA HOUSHANG, PIRSAHEB MEGHDAD, FATAHI NAZIR. IMPACT OF LONG-TERM IRRIGATION WITH KERMANSHAH MUNICIPAL TREATED WASTEWATER ON SOME SOIL PHYSICAL PROPERTIES. IRANIAN JOURNAL OF WATER RESEARCH IN AGRICULTURE (FORMERLY SOIL AND WATER SCIENCES)[Internet]. 2017;31(3 ):493-508. Available from: https://sid.ir/paper/196826/en

IEEE: Copy

MILAD FARMANIFARD, HOUSHANG GHAMARNIA, MEGHDAD PIRSAHEB, and NAZIR FATAHI, “IMPACT OF LONG-TERM IRRIGATION WITH KERMANSHAH MUNICIPAL TREATED WASTEWATER ON SOME SOIL PHYSICAL PROPERTIES,” IRANIAN JOURNAL OF WATER RESEARCH IN AGRICULTURE (FORMERLY SOIL AND WATER SCIENCES), vol. 31, no. 3 , pp. 493–508, 2017, [Online]. Available: https://sid.ir/paper/196826/en

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