INFLUENCE OF SURFACE AND SUBSURFACE DRAINAGE ON PHOSPHORUS LOSSES FROM PADDY FIELDS IN RICE SEASON

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DARZI NAFTCHALLY A.; MIRLATIFI S.M.; SHAHNAZARI A.; EJLALI F.; MAHDIAN M.H.

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Journal: Iranian Journal of Irrigation and Drainage Year:2012 | Volume:6 | Issue:3 Page(s): 215-225

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Title

INFLUENCE OF SURFACE AND SUBSURFACE DRAINAGE ON PHOSPHORUS LOSSES FROM PADDY FIELDS IN RICE SEASON

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Keywords

PHOSPHORUS BALANCEQ2

DRAINAGEQ2

PADDY FIELDQ2

WATER MANAGEMENTQ1

Abstract

Mid-season and end-season DRAINAGE are two major WATER MANAGEMENT practices in PADDY FIELDs so that, the former increases crop yield and the latter provides more suitable conditions for rice harvest. In this research, the implementation effect of these management practices through surface and subsurface DRAINAGE systems on phosphorus losses was evaluated at the 4.5 ha consolidated PADDY FIELD of Sari Agricultural Sciences and Natural Resources University, at summer of 1390. DRAINAGE treatments were: three conventional subsurface DRAINAGE systems including DRAINAGE system with drain depth of 0.9 m and drain spacing of 30 m (D0.9L30), drain depth of 0.65 m and drain spacing of 30 m (D0.65L30), and drain depth of 0.65 m and drain spacing of 15 m (D0.65L15); a bilevel subsurface DRAINAGEsystem with drain spacing of 15 m and drain depths of 0.65 and 0.9 m as alternate depths (Bilevel), and surface DRAINAGE system (Control). Tarom rice cultivar was planted on Tir, 30 and was harvested on Mehr, 18. During rice growing season, the various components of total phosphorus (TP) balance were measured in DRAINAGE treatments. The value of TP input to all treatments was 29.4 kg.ha-1, of which 0.007, 0.02, 0.007, 0.003, and 0.147 kg.ha-1 was lost through mid-season and end season DRAINAGE in Bilevel, D0.65L15, D0.65L30, D0.9L30, and Control treatments, respectively. The minimum and maximum of total DRAINAGE and leaching losses of TP were 0.204 and 0.427 kg ha-1 which were occurred in the Bilevel and control treatments, respectively. Based on the results, performing mid-season and end-season DRAINAGE through subsurface DRAINAGE systems had less environmental impacts on water resources from phosphorus release point of view, compared with surface DRAINAGE.

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APA: Copy

DARZI NAFTCHALLY, A., MIRLATIFI, S.M., SHAHNAZARI, A., EJLALI, F., & MAHDIAN, M.H.. (2012). INFLUENCE OF SURFACE AND SUBSURFACE DRAINAGE ON PHOSPHORUS LOSSES FROM PADDY FIELDS IN RICE SEASON. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, 6(3), 215-225. SID. https://sid.ir/paper/131526/en

Vancouver: Copy

DARZI NAFTCHALLY A., MIRLATIFI S.M., SHAHNAZARI A., EJLALI F., MAHDIAN M.H.. INFLUENCE OF SURFACE AND SUBSURFACE DRAINAGE ON PHOSPHORUS LOSSES FROM PADDY FIELDS IN RICE SEASON. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE[Internet]. 2012;6(3):215-225. Available from: https://sid.ir/paper/131526/en

IEEE: Copy

A. DARZI NAFTCHALLY, S.M. MIRLATIFI, A. SHAHNAZARI, F. EJLALI, and M.H. MAHDIAN, “INFLUENCE OF SURFACE AND SUBSURFACE DRAINAGE ON PHOSPHORUS LOSSES FROM PADDY FIELDS IN RICE SEASON,” IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, vol. 6, no. 3, pp. 215–225, 2012, [Online]. Available: https://sid.ir/paper/131526/en

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