VARIABILITY OF SOIL HYDRAULIC PARAMETERS UNDER DIFFERENT AGRICULTURAL LAND USES

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ZEINALZADEH K.; KASHKULI H.A.; NASERI A.A.; DADMEHR R.; EIVAZI R.

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Journal: Journal of Water Research in Agriculture Year:2010 | Volume:24 | Issue:1 Page(s): 1-11

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Title

VARIABILITY OF SOIL HYDRAULIC PARAMETERS UNDER DIFFERENT AGRICULTURAL LAND USES

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Keywords

SOIL HYDRAULIC PARAMETERSQ2

DISC INFILTROMETERQ2

TEMPORAL VARIABILITYQ2

LAND USEQ2

Abstract

Hydraulic conductivity (K) of unsaturated and saturated soils and the pore size distribution parameter (Gardner a) are important hydraulic parameters for understanding some aspects of unsaturated soil water ﬂow. These parameters vary with time as well as spatial position. For To investigate these changes, field measurements were performed using DISC INFILTROMETER at matric potentials of -15, -10, -6, -4, -3, and 0 cm water were in three times periods from June to August in 2009. The measurements were made in four ﬁelds under different LAND USEs as including winter barley, silage single cross corn, apple orchard, and uncultivated land in the agricultural fields of Urmia University, Iran. Five replicate sequences of infiltration rate tests were conducted for each measurement set and LAND USE. Soil texture at these sites was classiﬁed as clay. The study was conducted employing split plot in time experiment. Results of ANOVA showed that LAND USE, time period, and their interaction had signiﬁcant impact (at one per cent level) on K values (except at matric potential of -15 cm). At matric potential of -15 cm, the average K displayed significant variation (at five per cent level). Therefore, LAND USE and time period showed the least impact on K15. Values of Gardner a had significant differences (at one per cent level) with respect to LAND USE and time, but showed no significant difference (at five per cent level) with respect to their interaction. Results of this study showed that the initial soil moisture had an important role on the rate of temporal variation of soil k.

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APA: Copy

ZEINALZADEH, K., KASHKULI, H.A., NASERI, A.A., DADMEHR, R., & EIVAZI, R.. (2010). VARIABILITY OF SOIL HYDRAULIC PARAMETERS UNDER DIFFERENT AGRICULTURAL LAND USES. IRANIAN JOURNAL OF WATER RESEARCH IN AGRICULTURE (FORMERLY SOIL AND WATER SCIENCES), 24(1), 1-11. SID. https://sid.ir/paper/196660/en

Vancouver: Copy

ZEINALZADEH K., KASHKULI H.A., NASERI A.A., DADMEHR R., EIVAZI R.. VARIABILITY OF SOIL HYDRAULIC PARAMETERS UNDER DIFFERENT AGRICULTURAL LAND USES. IRANIAN JOURNAL OF WATER RESEARCH IN AGRICULTURE (FORMERLY SOIL AND WATER SCIENCES)[Internet]. 2010;24(1):1-11. Available from: https://sid.ir/paper/196660/en

IEEE: Copy

K. ZEINALZADEH, H.A. KASHKULI, A.A. NASERI, R. DADMEHR, and R. EIVAZI, “VARIABILITY OF SOIL HYDRAULIC PARAMETERS UNDER DIFFERENT AGRICULTURAL LAND USES,” IRANIAN JOURNAL OF WATER RESEARCH IN AGRICULTURE (FORMERLY SOIL AND WATER SCIENCES), vol. 24, no. 1, pp. 1–11, 2010, [Online]. Available: https://sid.ir/paper/196660/en

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