EVALUATION OF SOIL AGGREGATE STABILITY IN SOME REGIONS OF IRAN

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TAJIK F.

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Journal: Journal of Water and Soil Science Year:2004 | Volume:8 | Issue:1 Page(s): 123-123

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Title

EVALUATION OF SOIL AGGREGATE STABILITY IN SOME REGIONS OF IRAN

Author(s)

TAJIK F. | Issue Writer Certificate

Keywords

SOIL STRUCTUREQ1

WET AGGREGATE STABILITY (WAS)Q4

DISPERSIBLE CLAY (DC)Q4

Abstract

Aggregation is an important temporal property of SOIL STRUCTURE that is affected by intrinsic soil properties and also soil use and management. Aggregate stability has a strong influence on many processes in soil such as infiltration, aeration, strength, erosion, and soils ability to transmit liquids, solutes, gases, and heat. In this study, undisturbed soil specimens from 0-10 and 10-20 cm depths were sampled during summer 1999 from some regions in Iran including Golestan, Kermanshah, West Azerbaijan, and Mazandaran. After drying the samples in lab, the different sizes of aggregates were separated and the wet aggregate stability (WAS) and dispersible clay (DC) were determined on 2-2.8 mm aggregates according to Pojasok & Kay procedure (1990(. The variance analysis of data showed significant differences among soils in all regions. The averages were compared by Duncan test to find the following order: Mazendaran > Golestan > Kermanshah > West Azerbaijan. Regression analysis of data of whole regions showed that the variability of aggregate stability was mainly explained by organic carbon content (R^2=0.723 in P > 0.0001). The clay content had the greatest effect on aggregate stability in samples from Golestan while sand content had the greatest effect in samples from West Azerbaijan. The resulting equations from stepwise regression can be used to estimate aggregate stability from other soil variables in the study regions.

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APA: Copy

TAJIK, F.. (2004). EVALUATION OF SOIL AGGREGATE STABILITY IN SOME REGIONS OF IRAN. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 8(1), 123-123. SID. https://sid.ir/paper/360667/en

Vancouver: Copy

TAJIK F.. EVALUATION OF SOIL AGGREGATE STABILITY IN SOME REGIONS OF IRAN. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2004;8(1):123-123. Available from: https://sid.ir/paper/360667/en

IEEE: Copy

F. TAJIK, “EVALUATION OF SOIL AGGREGATE STABILITY IN SOME REGIONS OF IRAN,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 8, no. 1, pp. 123–123, 2004, [Online]. Available: https://sid.ir/paper/360667/en

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