THE INFILTRATION CHARACTERISTICS OF PADDY FIELDS IN SWELLING SOILS OF GUILAN PROVINCE

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JAFARI F.; MOSTAFAZADEH FARD B.; MOUSAVI S.F.; YAZDANI M.

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Journal: Iranian Journal of Irrigation and Drainage Year:2008 | Volume:2 | Issue:2 Page(s): 31-42

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Title

THE INFILTRATION CHARACTERISTICS OF PADDY FIELDS IN SWELLING SOILS OF GUILAN PROVINCE

Author(s)

JAFARI F. | MOSTAFAZADEH FARD B. | MOUSAVI S.F. | YAZDANI M. | Issue Writer Certificate

Keywords

CRACKING CLAY SOILSQ3

PADDY FIELDQ2

IRRIGATION MANAGEMENTQ2

INFILTRATIONQ2

Abstract

The soils of PADDY FIELDs of Guilan province, due to a large amount of clay particles, shrink and the cracks will start to develop as the soil moisture content decreases, which causes a considerable amount of irrigation water loss through the cracks. Appropriate IRRIGATION MANAGEMENT of these soils has important influence on reduction of irrigation water loss. This study was performed to determine the effects of different irrigation water managements on amount of irrigation water and INFILTRATION characteristics of PADDY FIELDs in a dominant swelling soil of Guilan province. The experiments were factorial completely randomized block design with three replications. The main treatments were crack width (3-4 mm, 1.5 cm and 2.5 cm) which are called C0, C1.5 and C2.5, respectively. The sub-treatments were irrigation, with irrigation to fill up the cracks and up to the start of ponding, irrigation to fill up the cracks and up to 2.5 cm of ponding at the soil surface and irrigation to fill up the cracks and up to 5 cm of ponding at the soil surface, which are called D0, D2.5 and D5, respectively. The results showed that the initial soil moisture content has important influence on INFILTRATION of cracking soils and a large portion of irrigation water will be used to fill up the cracks. The soil moisture changes have low influence on the exponent and high influence on the coefficient of Kostiakov-Lewis INFILTRATION equation. As the soil moisture decreased, the coefficient of this equation increased and larger volume of irrigation water was needed to fill up the cracks. The cumulative INFILTRATION for the C2.5 treatment as compared to the C0 and C1.5 treatments was 4.34 and 2.35 times higher, respectively. The effects of crack width, depth of irrigation water and the interaction effects of crack width and depth of irrigation water on volume of irrigation water were significant. The irrigation water loss for the C0, C1.5 and C2.5 treatments were 56.73, 64.53 and 78.17%, respectively.

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APA: Copy

JAFARI, F., MOSTAFAZADEH FARD, B., MOUSAVI, S.F., & YAZDANI, M.. (2008). THE INFILTRATION CHARACTERISTICS OF PADDY FIELDS IN SWELLING SOILS OF GUILAN PROVINCE. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, 2(2), 31-42. SID. https://sid.ir/paper/131435/en

Vancouver: Copy

JAFARI F., MOSTAFAZADEH FARD B., MOUSAVI S.F., YAZDANI M.. THE INFILTRATION CHARACTERISTICS OF PADDY FIELDS IN SWELLING SOILS OF GUILAN PROVINCE. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE[Internet]. 2008;2(2):31-42. Available from: https://sid.ir/paper/131435/en

IEEE: Copy

F. JAFARI, B. MOSTAFAZADEH FARD, S.F. MOUSAVI, and M. YAZDANI, “THE INFILTRATION CHARACTERISTICS OF PADDY FIELDS IN SWELLING SOILS OF GUILAN PROVINCE,” IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, vol. 2, no. 2, pp. 31–42, 2008, [Online]. Available: https://sid.ir/paper/131435/en

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