EVALUATING DRAINMOD AND SWAP DRAINAGE MODELS IN DETERMINING OPTIMAL DEPTH AND SPACING USING CROP YIELD PERFORMANCE AND DRAINAGE EFFLUENT

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SAMIPOUR F.; MOHAMMADI K.; MAHDIAN M.H.; NASERI A.A.

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Paper Information

Journal: Iranian Journal of Irrigation and Drainage Year:2011 | Volume:4 | Issue:3 Page(s): 375-386

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Title

EVALUATING DRAINMOD AND SWAP DRAINAGE MODELS IN DETERMINING OPTIMAL DEPTH AND SPACING USING CROP YIELD PERFORMANCE AND DRAINAGE EFFLUENT

Author(s)

SAMIPOUR F. | MOHAMMADI K. | MAHDIAN M.H. | NASERI A.A. | Issue Writer Certificate

Keywords

DRAINAGE MODELQ2

KHOZESTANQ2

SIMULATIONQ3

SUGARCANEQ2

DRAINMODQ3

SWAPQ3

Abstract

Farm experiments are useful in knowing the drainage systems but they have considerable limitations including the inability to use them as prediction tools. Application of SIMULATION models can cover these deficiencies but it is necessary to use the field data to evaluate the accuracy of the model. Two widely used DRAINAGE MODELs are SWAP and DRAINMOD. The purpose of this research is to evaluate these models under filed conditions to simulate water table fluctuations and calculate optimum drain space and depth based on maximizing the crop production and minimizing drainage water. For this purpose, collected data from Mirza Kouchakkhan SUGARCANE farm in KHOZESTAN in years 2001 and 2002 were used. The results showed that SWAP had better performance in calibration and verification periods. The RMSE for SWAP in calibration and verification periods were 15.18 and 14.85, respectively but they were 18.14 and 20.69 for DRAINMOD. Then, to find the best drain space and depth, for 28 different combinations of depth and space, crop production and drainage water were calculated. Considering the minimum crop production equal to 80 percent of the maximum crop production potential, for each model, 4 sets of depths and spaces were selected. Then, the set that had the minimum drainage water was selected as the best drain depth and space combination. This was 1.6 m depth and 25 m space for SWAP model and 1.15 m depth and 15 m space for DRAINMOD model. The difference can be attributed to the different crop production functions in two models. Because of limited data, in SWAP, a simple crop model was selected but in DRAINMOD, the effects of late plantation and over wet or dry conditions were taking into account and they changed the crop production.

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References

راهنمای نصب و اجرای مدل SWAP

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APA: Copy

SAMIPOUR, F., MOHAMMADI, K., MAHDIAN, M.H., & NASERI, A.A.. (2011). EVALUATING DRAINMOD AND SWAP DRAINAGE MODELS IN DETERMINING OPTIMAL DEPTH AND SPACING USING CROP YIELD PERFORMANCE AND DRAINAGE EFFLUENT . IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, 4(3), 375-386. SID. https://sid.ir/paper/131489/en

Vancouver: Copy

SAMIPOUR F., MOHAMMADI K., MAHDIAN M.H., NASERI A.A.. EVALUATING DRAINMOD AND SWAP DRAINAGE MODELS IN DETERMINING OPTIMAL DEPTH AND SPACING USING CROP YIELD PERFORMANCE AND DRAINAGE EFFLUENT . IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE[Internet]. 2011;4(3):375-386. Available from: https://sid.ir/paper/131489/en

IEEE: Copy

F. SAMIPOUR, K. MOHAMMADI, M.H. MAHDIAN, and A.A. NASERI, “EVALUATING DRAINMOD AND SWAP DRAINAGE MODELS IN DETERMINING OPTIMAL DEPTH AND SPACING USING CROP YIELD PERFORMANCE AND DRAINAGE EFFLUENT ,” IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, vol. 4, no. 3, pp. 375–386, 2011, [Online]. Available: https://sid.ir/paper/131489/en

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