Comparison of MEDIWY and LEACHW models for simulation of soil layers moisture in wheat agronomy

According to needs, many models have been developed for simulation of soil water and crop yields. MEDIWY is one of these models which presented for simulation of yield for Adle winter wheat under irrigated and rainfed conditions in Badjgah area. Therefore it was tried to consideration of the water balance submodel of MEDIWY model because of needs and useful of MEDIWY model. LEACHW is a model, which is able to simulate soil water movement in different soil layers. In present study water balance submodel of MEDIWY model and LEACHW model in Maragheh area (Eastern Azarbayjan province) were compared. The LEACHW and MEDIWY models for simulation of soil water contents were compared. Mean error between measured and predicted soil water contents in LEACHW and MEDIWY models was between 1.52 to 3.31 and 9.12 to 14.22 percent, respectively. The LEACHW model was able to estimate relatively accurate results comparing with MEDIWY model. Therefore, use of LEACHW model instead water balance submodel of MEDIWY model, can be useful to simulation of wheat yield.