THE EFFECT OF LONG-TERM APPLICATION OF MUNICIPAL WASTEWATER ON SOIL PHYSICALQUALITY INDICES: A CASE STUDY IN THE TAQANAK FARMS, SHAHREKORD

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BEIGI HARCHEGANI H.; BANITALEBI G.

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Journal: Journal of Water and Soil Year:2013 | Volume:27 | Issue:5 Page(s): 1046-1056

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Title

THE EFFECT OF LONG-TERM APPLICATION OF MUNICIPAL WASTEWATER ON SOIL PHYSICALQUALITY INDICES: A CASE STUDY IN THE TAQANAK FARMS, SHAHREKORD

Author(s)

BEIGI HARCHEGANI H. | BANITALEBI G. | Issue Writer Certificate

Keywords

AIR CAPACITYQ1

EFFECTIVE POROSITYQ3

DEXTER’S S INDEXQ2

PLANT AVAILABLE WATERQ2

RELATIVE WATER CONTENTQ1

Abstract

To investigate the long-term effect (13 and 23 years) of wastewater irrigation on soil physical quality indices in Taqanak, Shahrekord, four homogenous fields but with long and different history of treated municipal wastewater application were selected. The changes in conventional soil physical indicators (organic carbon, bulk density, mean diameter of aggregates) as well as retention-curve derived indices: DEXTER’S S INDEX, Macro pore porosity (MacPOR), AIR CAPACITY (AC), PLANT AVAILABLE WATER content (PAWC) and relative water capacity (RWC) were investigated in these farms. Irrigation with wastewater significantly increased (p<0.05) organic carbon from 11 to 20 g kg-1, porosity from 0.40 to 0.50, and bulk density from 1.25 to 1 Mg m-3 (p<0.05). Irrigation with wastewater, in addition to significantly increasing S index from 0.064 to 0.077 and AIR CAPACITY from 0.13 to 0.19, doubled the EFFECTIVE POROSITY from 0.08 to 0.16 and increased the PAWC by 4% (all at p<0.05). Dexter’s S positively and significantly (p<0.05) correlated with total porosity (r=0.57), saturation moisture content (r=0.72), EFFECTIVE POROSITY (r=0.63), PLANT AVAILABLE WATER content (r=0.74), AIR CAPACITY (r=0.81) while negatively and significantly (p<0.05) correlated with the RWC (r=-0.64) and bulk density (r=-0.51). Municipal wastewater has improved soil physical quality. The improvement has occurred either after 13 years or after 23 years irrigation with wastewater. Re-irrigation with freshwater, tends to return some physical indices to the default values at control Farm 1.

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APA: Copy

BEIGI HARCHEGANI, H., & BANITALEBI, G.. (2013). THE EFFECT OF LONG-TERM APPLICATION OF MUNICIPAL WASTEWATER ON SOIL PHYSICALQUALITY INDICES: A CASE STUDY IN THE TAQANAK FARMS, SHAHREKORD. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), 27(5), 1046-1056. SID. https://sid.ir/paper/141218/en

Vancouver: Copy

BEIGI HARCHEGANI H., BANITALEBI G.. THE EFFECT OF LONG-TERM APPLICATION OF MUNICIPAL WASTEWATER ON SOIL PHYSICALQUALITY INDICES: A CASE STUDY IN THE TAQANAK FARMS, SHAHREKORD. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)[Internet]. 2013;27(5):1046-1056. Available from: https://sid.ir/paper/141218/en

IEEE: Copy

H. BEIGI HARCHEGANI, and G. BANITALEBI, “THE EFFECT OF LONG-TERM APPLICATION OF MUNICIPAL WASTEWATER ON SOIL PHYSICALQUALITY INDICES: A CASE STUDY IN THE TAQANAK FARMS, SHAHREKORD,” JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), vol. 27, no. 5, pp. 1046–1056, 2013, [Online]. Available: https://sid.ir/paper/141218/en

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