STRUCTURAL STABILITY ASSESSMENT USING WET SIEVING METHOD AND ITS RELATIONS WITH SOME INTRINSIC PROPERTIES IN 21 SOIL SERIES FROM HAMADAN PROVINCE

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KHAZAEE A.; MOSADDEGHI M.R.; MAHBOUBI A.A.

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Journal: AGRICULTURAL RESEARCH Year:2008 | Volume:8 | Issue:1 (A) Page(s): 171-181

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Title

STRUCTURAL STABILITY ASSESSMENT USING WET SIEVING METHOD AND ITS RELATIONS WITH SOME INTRINSIC PROPERTIES IN 21 SOIL SERIES FROM HAMADAN PROVINCE

Author(s)

KHAZAEE A. | MOSADDEGHI M.R. | MAHBOUBI A.A. | Issue Writer Certificate

Keywords

SOIL STRUCTURAL STABILITYQ3

MEAN WEIGHT DIAMETERQ3

CLAYQ2

ORGANIC MATTERQ2

CALCIUM CARBONATEQ3

Abstract

Soil structure could directly and indirectly affect soil water retention, hydraulic conductivity, aeration and temperature. It is also important in terms of soil mechanical impedance and nutrient diffusion in soil, which have impacts on plant growth and crop production. Many factors such as soil texture, ORGANIC MATTER and CALCIUM CARBONATE content might change SOIL STRUCTURAL STABILITY. The influences of these factors on aggregate stability were studied for 21 soil series from Hamadan province, Iran. Aggregate stability was measured using wet sieving method and MEAN WEIGHT DIAMETER (MWD) of the aggregates was calculated. Three time durations of shaking (5, 10 and 15 min) in water were used to impose different hydromechanical stresses on soil aggregates. All of the measured intrinsic properties significantly affected structural stability. Short-time shaking (i.e. 5 min) resulted in better differentiation of soils on the basis of structural stability. This was due to the low intrinsic structural stability of aridic and semi-aridic soils in Iran. Among the intrinsic soil properties, soil ORGANIC MATTER had the most important role in aggregate stability. For instance, soil ORGANIC MATTER (OM) increased MWD of 5 min shaking (MWD5), 18 and 26 times greater than the CLAY and CaCO3 did, respectively. It could be predicted from the following regression equation: MWD5 (mm)=- 0.267+0.449 OM%+0.0245 CLAY%+0.0169 CaCO3% R2=84.8%Partial correlation analyses showed that the highest partial correlation coefficients were observed between MWD and soil CLAY content and then between MWD and OM for all of the shaking times.With increasing shaking duration, CLAY content effect on MWD increased but the influences of ORGANIC MATTER and CaCO3 contents decreased. Generally, the ORGANIC MATTER and CLAY contents were most important soil properties regarding aggregate stability for the studied soils. The short time (5 min) wet sieving may be recommended for structural stability assessment of the soils.

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APA: Copy

KHAZAEE, A., MOSADDEGHI, M.R., & MAHBOUBI, A.A.. (2008). STRUCTURAL STABILITY ASSESSMENT USING WET SIEVING METHOD AND ITS RELATIONS WITH SOME INTRINSIC PROPERTIES IN 21 SOIL SERIES FROM HAMADAN PROVINCE. AGRICULTURAL RESEARCH, 8(1 (A)), 171-181. SID. https://sid.ir/paper/84740/en

Vancouver: Copy

KHAZAEE A., MOSADDEGHI M.R., MAHBOUBI A.A.. STRUCTURAL STABILITY ASSESSMENT USING WET SIEVING METHOD AND ITS RELATIONS WITH SOME INTRINSIC PROPERTIES IN 21 SOIL SERIES FROM HAMADAN PROVINCE. AGRICULTURAL RESEARCH[Internet]. 2008;8(1 (A)):171-181. Available from: https://sid.ir/paper/84740/en

IEEE: Copy

A. KHAZAEE, M.R. MOSADDEGHI, and A.A. MAHBOUBI, “STRUCTURAL STABILITY ASSESSMENT USING WET SIEVING METHOD AND ITS RELATIONS WITH SOME INTRINSIC PROPERTIES IN 21 SOIL SERIES FROM HAMADAN PROVINCE,” AGRICULTURAL RESEARCH, vol. 8, no. 1 (A), pp. 171–181, 2008, [Online]. Available: https://sid.ir/paper/84740/en

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