THE EFFECT OF SOIL ORGANIC MATTER, ELECTRICAL CONDUCTIVITY,AND SODIUM ADSORPTION RATIO ON TENSILE STRENGTH OF AGGREGATES

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TAJIK F.; RAHIMI H.; PAZIRA E.

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Journal: Journal of Water and Soil Science Year:2002 | Volume:6 | Issue:3 Page(s): 161-186

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Title

THE EFFECT OF SOIL ORGANIC MATTER, ELECTRICAL CONDUCTIVITY,AND SODIUM ADSORPTION RATIO ON TENSILE STRENGTH OF AGGREGATES

Author(s)

TAJIK F. | RAHIMI H. | PAZIRA E. | Issue Writer Certificate

Keywords

SOIL ORGANIC MATTERQ2

SALT-AFFECTED SOILSQ2

AGGREGATE TENSILE STRENGTHQ2

Abstract

The general characteristics of SALT-AFFECTED SOILS and soil structure degradation process are partially known, but the effects of saline and sodic conditions on mechanical properties of soils are not well recognized. In this study, the effects of electrical conductivity (EC) and sodium adsorption ratio (SAR) on tensile strength of soils with different organic carbon contents were assessed under laboratory conditions. The soil samples were collected from Dasht-E-Naz, at Sari region in the North of Iran. The samples had the same clay mineral (Illitic) and the main difference between them was the organic carbon content, subjected to different cropping. systems. The tensile strength was determined on soil samples which had been treated by solutions having defined EC (0.5 and 4 dS/m) and SAR (0,5, 15). The tensile strength was positively related to organic carbon content, but negatively to SAR. With increasing SAR, tensile strength decreased, and at a given SAR, the treatments with higher EC showed higher tensile strength. The analysis of variance showed significant differences (at 0.01) between soil samples (four levels), soil sampling depth (two levels), EC (two levels), and SAR (three levels) for all variables under investigation. For soil factor, the order of averages were: Virgin soil> Permanent pasture (Festuca) > Intensive cropping> Permanent pasture (Agropyron).

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APA: Copy

TAJIK, F., RAHIMI, H., & PAZIRA, E.. (2002). THE EFFECT OF SOIL ORGANIC MATTER, ELECTRICAL CONDUCTIVITY,AND SODIUM ADSORPTION RATIO ON TENSILE STRENGTH OF AGGREGATES. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 6(3), 161-186. SID. https://sid.ir/paper/406404/en

Vancouver: Copy

TAJIK F., RAHIMI H., PAZIRA E.. THE EFFECT OF SOIL ORGANIC MATTER, ELECTRICAL CONDUCTIVITY,AND SODIUM ADSORPTION RATIO ON TENSILE STRENGTH OF AGGREGATES. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2002;6(3):161-186. Available from: https://sid.ir/paper/406404/en

IEEE: Copy

F. TAJIK, H. RAHIMI, and E. PAZIRA, “THE EFFECT OF SOIL ORGANIC MATTER, ELECTRICAL CONDUCTIVITY,AND SODIUM ADSORPTION RATIO ON TENSILE STRENGTH OF AGGREGATES,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 6, no. 3, pp. 161–186, 2002, [Online]. Available: https://sid.ir/paper/406404/en

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