THE EFFECTS OF SLOPE AND CROP COVERAGE ON SURFACE STORAGE AND RUNOFF OF SWELLING SOILS UNDER SPRINKLER IRRIGATION

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NATEGHINIA S.; MOSTAFAZADEH FARD B.; MOUSAVI S.F.

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Journal: Iranian Journal of Irrigation and Drainage Year:2008 | Volume:2 | Issue:2 Page(s): 19-29

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Title

THE EFFECTS OF SLOPE AND CROP COVERAGE ON SURFACE STORAGE AND RUNOFF OF SWELLING SOILS UNDER SPRINKLER IRRIGATION

Author(s)

NATEGHINIA S. | MOSTAFAZADEH FARD B. | MOUSAVI S.F. | Issue Writer Certificate

Keywords

SPRINKLER IRRIGATIONQ2

CRACKING CLAY SOILQ3

SURFACE STORAGEQ2

RUNOFFQ2

INFILTRATIONQ2

Abstract

The SPRINKLER IRRIGATION is a method that due to its high performance and saving of water is expanding. In SPRINKLER IRRIGATION it is possible to store some parts of irrigation water at soil surface without RUNOFF. The soil SURFACE STORAGE depends on slope, crop coverage and roughness. SURFACE STORAGE has important influence on RUNOFF and INFILTRATION. In CRACKING CLAY SOILs, with reduction of soil moisture, cracks are developed which cause problems for INFILTRATION and irrigation performance. In this study, to determine the effects of slope (1, 3 and 5%), crop coverage and soil cracks on SURFACE STORAGE and RUNOFF under a typical SPRINKLER IRRIGATION system, field experiments were conducted on a SPRINKLER IRRIGATION farm at Markazi province, central Iran. The experiments were conducted for two soils (ordinary and cracking clay) using complete randomized design with three replications for each treatment. The results showed that slope and crop coverage have significant effects on RUNOFF and SURFACE STORAGE. The increase in slope from 1% to 5%, caused the RUNOFF to increase from 34.7% to 43.3%. The effects of slope on SURFACE STORAGE were negative. In ordinary soil without crop coverage, the increase in slope from 1% to 5% caused the depth of SURFACE STORAGE to decrease from 0.97 cm to 0.58 cm. The crop coverage caused 10% reduction in volume of RUNOFF. The effects of crop coverage on RUNOFF were higher as compared to the effects of soil cracks. The effects of soil cracks on SURFACE STORAGE were significant at 5% level.

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APA: Copy

NATEGHINIA, S., MOSTAFAZADEH FARD, B., & MOUSAVI, S.F.. (2008). THE EFFECTS OF SLOPE AND CROP COVERAGE ON SURFACE STORAGE AND RUNOFF OF SWELLING SOILS UNDER SPRINKLER IRRIGATION. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, 2(2), 19-29. SID. https://sid.ir/paper/131443/en

Vancouver: Copy

NATEGHINIA S., MOSTAFAZADEH FARD B., MOUSAVI S.F.. THE EFFECTS OF SLOPE AND CROP COVERAGE ON SURFACE STORAGE AND RUNOFF OF SWELLING SOILS UNDER SPRINKLER IRRIGATION. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE[Internet]. 2008;2(2):19-29. Available from: https://sid.ir/paper/131443/en

IEEE: Copy

S. NATEGHINIA, B. MOSTAFAZADEH FARD, and S.F. MOUSAVI, “THE EFFECTS OF SLOPE AND CROP COVERAGE ON SURFACE STORAGE AND RUNOFF OF SWELLING SOILS UNDER SPRINKLER IRRIGATION,” IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, vol. 2, no. 2, pp. 19–29, 2008, [Online]. Available: https://sid.ir/paper/131443/en

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