ASSESSMENT OF WATER PRODUCTION FUNCTION OF WHEAT UNDER SUPPLEMENTARY IRRIGATION

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KIANI A.R.; KALATEHARABI M.

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Journal: Iranian Journal of Irrigation and Drainage Year:2009 | Volume:3 | Issue:2 Page(s): 112-122

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Title

ASSESSMENT OF WATER PRODUCTION FUNCTION OF WHEAT UNDER SUPPLEMENTARY IRRIGATION

Author(s)

KIANI A.R. | KALATEHARABI M. | Issue Writer Certificate

Keywords

SPRINKLER IRRIGATIONQ2

DEFICIT IRRIGATIONQ2

PRODUCTION FUNCTIONQ2

CROP COEFFICIENTQ2

WHEATQ3

Abstract

Optimal irrigation scheduling requires to crop-water PRODUCTION FUNCTION. Crop-water PRODUCTION FUNCTION describes relationship between crop yield and applied water. A field study was conducted to compare various genotypes of WHEAT to water using line source SPRINKLER IRRIGATION. The effect of variable water supply on yield, analysis of water PRODUCTION FUNCTION with the seasonal rainfall, comparison of deficit and full irrigation strategies and CROP COEFFICIENT (Kc) during the growth stage of six WHEAT genotypes were considered. Four locations where they were provided by the decline in irrigation with distance from the line source, during the growing season to meet 100 % (W1), 76 % (W2), 52 % (W3) and 39 % (W4) crop water requirement. The experiment used a strip plot design to examine the effect of the fixed irrigation rates on six cultivars treatments (CI=TAJAN, C2=N-80-6, C3=N-80-7, C4=N-80-19, C5=N-81-18, C6= Desconcido) with four replications.Within each irrigation treatment of each strip were divided into six cultivars treatments, along the length of the laterals. Result indicated that the grain yield was affected by irrigation treatment and cultivars. The maximum.grain yield was obtained in W1Cztreatment (4742 Kg/ha) and the minimum grain yield was obtained in W4C1 treatment (3546 Kg/ha).Investigation of water PRODUCTION FUNCTIONs have shown that under DEFICIT IRRIGATION, for 250 mm of seasonal rainfall with the same its distribution, there is no need to irrigation all of the cultivars.Contrary, in the full irrigation strategy, with 250 mm of seasonal rainfall, the cultivars of C1to C6need to 115, 122, 87, 94, 92 and 97 mm additional water as supplementary irrigation to maximize production, respectively.The quantitative comparison of deficit and full irrigation strategies were showed that DEFICIT IRRIGATION was more useful strategy for obtaining more production as compared to full irrigation.

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APA: Copy

KIANI, A.R., & KALATEHARABI, M.. (2009). ASSESSMENT OF WATER PRODUCTION FUNCTION OF WHEAT UNDER SUPPLEMENTARY IRRIGATION. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, 3(2), 112-122. SID. https://sid.ir/paper/131542/en

Vancouver: Copy

KIANI A.R., KALATEHARABI M.. ASSESSMENT OF WATER PRODUCTION FUNCTION OF WHEAT UNDER SUPPLEMENTARY IRRIGATION. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE[Internet]. 2009;3(2):112-122. Available from: https://sid.ir/paper/131542/en

IEEE: Copy

A.R. KIANI, and M. KALATEHARABI, “ASSESSMENT OF WATER PRODUCTION FUNCTION OF WHEAT UNDER SUPPLEMENTARY IRRIGATION,” IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, vol. 3, no. 2, pp. 112–122, 2009, [Online]. Available: https://sid.ir/paper/131542/en

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