EVALUATION AND MODIFICATION OF MEDIWY MODEL FOR IRRIGATED AND RAINFED WHEAT IN MARAGHEH AREA

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SEPASKHAH ALI REZA; AGHA YARI F.; TAVAKOLI A.R.

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Paper Information

Journal: JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH Year:2006 | Volume:7 | Issue:28 Page(s): 133-150

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Title

EVALUATION AND MODIFICATION OF MEDIWY MODEL FOR IRRIGATED AND RAINFED WHEAT IN MARAGHEH AREA

Author(s)

SEPASKHAH ALI REZA | AGHA YARI F. | TAVAKOLI A.R. | Issue Writer Certificate

Keywords

GRAIN YIELD ESTIMATIONQ4

MARAGHEH AREAQ4

MEDIWY MODELQ4

RAINFED WHEATQ4

Abstract

According to needs, many models have been developed for simulation of crop yields. MEDIWY (Model for Estimation of Dryland and Irrigated Wheat Yield) is one of these models which presented for simulation of yield for Adle winter wheat under irrigated and rainfed conditions in Badjgah area. This model has been developed in Irrigation Department of Shiraz University. However, its extensive application requires model evaluation for different wheat varieties under different climatic conditions. In present study, the MEDIWY MODEL was evaluated and modified for simulation of Sabalan winter wheat under irrigated and rainfed conditions in MARAGHEH AREA (Eastern Azarbayejan province) for three consecutive crop years (1378-79 to 1380-81 , H.S.). The simulated and measured grain yields were compared. It was indicated that the simulated grain yield under irrigated condition was satisfactory, but it was not able to simulate the grain yield under rainfed condition. Therefore, the coefficient of soil readily available water was changed from 0.65 to 0.90 for rainfed grain yield simulation. The modified MEDIWY MODEL properly simulated the grain yield under rainfed condition. Furthermore, it was found that this model was not able to simulate the grain yield for crop years with high rainfall during the growing season in spring and summer due to plant disease infection. The amount of this rainfall was more than 140 mm and the model was modified for this parameter. Therefore, the modified model for excess rain was able to simulate the grain yield of Sabalan winter wheat under irrigated and rainfed conditions in MARAGHEH AREA even for years with high rainfall during the growing season in spring and summer. Further, modified model was validated by data obtained for Alamoot cultivar and the results were satisfactory.

Cites

REGIONAL ESTIMATION OF RAINFED WHEAT YIELD BASED ON PRECIPITATION DATA

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APA: Copy

SEPASKHAH, ALI REZA, AGHA YARI, F., & TAVAKOLI, A.R.. (2006). EVALUATION AND MODIFICATION OF MEDIWY MODEL FOR IRRIGATED AND RAINFED WHEAT IN MARAGHEH AREA. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 7(28), 133-150. SID. https://sid.ir/paper/28179/en

Vancouver: Copy

SEPASKHAH ALI REZA, AGHA YARI F., TAVAKOLI A.R.. EVALUATION AND MODIFICATION OF MEDIWY MODEL FOR IRRIGATED AND RAINFED WHEAT IN MARAGHEH AREA. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH[Internet]. 2006;7(28):133-150. Available from: https://sid.ir/paper/28179/en

IEEE: Copy

ALI REZA SEPASKHAH, F. AGHA YARI, and A.R. TAVAKOLI, “EVALUATION AND MODIFICATION OF MEDIWY MODEL FOR IRRIGATED AND RAINFED WHEAT IN MARAGHEH AREA,” JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, vol. 7, no. 28, pp. 133–150, 2006, [Online]. Available: https://sid.ir/paper/28179/en

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