EVALUATION OF AQUACROP VS SALTMED MODELS TO ESTIMATE CROP YIELD AND SOIL SALINITY

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HASSANLI MOHAMMAD; AFRASIAB PEYMAN; EBRAHIMIAN HAMED

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Journal: Iranian Journal of Soil and Water Research Year:2015 | Volume:46 | Issue:3 Page(s): 487-498

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Title

EVALUATION OF AQUACROP VS SALTMED MODELS TO ESTIMATE CROP YIELD AND SOIL SALINITY

Author(s)

HASSANLI MOHAMMAD | AFRASIAB PEYMAN | EBRAHIMIAN HAMED | Issue Writer Certificate

Keywords

SIMULATIONQ2

CYCLIC USE OF SALINE WATERQ2

DRIP IRRIGATIONQ2

FORAGE MAIZEQ2

Abstract

Application of SIMULATION models is a strategy in agricultural water usage management and in predicting the effect of saline water on crop yield and as well on soil salinity. Recently, FAO has introduced a new version of Aqua Crop model through which one can calculate the effect of irrigation water salinity on crop yield and on soil salinity. In the present study, Aqua Crop and SALTMED models were evaluated under alternate application of saline vs fresh water for maize as a forage crop. The required field experiments were carried out in nine treatments (under different conditions of using non-saline vssaline water) in Karaj region. In SALTMED model, R2 values were obtained 0.843 and 0.733 for soil salinity and crop yield, respectively, while these values amounted to 0.758 and 0.846 respectively, for Aqua Crop model. Relative error in Aqua Crop model varied between 2.9 and 30.8% in crop yield estimation and between 5.9 and 45.8% in soil salinity estimation. The relative error in SALTMED model ranged from 0.9 to 24.7% to estimate crop yield while ranging from -2.2 to 38.2% in estimation of soil salinity.

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APA: Copy

HASSANLI, MOHAMMAD, AFRASIAB, PEYMAN, & EBRAHIMIAN, HAMED. (2015). EVALUATION OF AQUACROP VS SALTMED MODELS TO ESTIMATE CROP YIELD AND SOIL SALINITY. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, 46(3), 487-498. SID. https://sid.ir/paper/225741/en

Vancouver: Copy

HASSANLI MOHAMMAD, AFRASIAB PEYMAN, EBRAHIMIAN HAMED. EVALUATION OF AQUACROP VS SALTMED MODELS TO ESTIMATE CROP YIELD AND SOIL SALINITY. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH[Internet]. 2015;46(3):487-498. Available from: https://sid.ir/paper/225741/en

IEEE: Copy

MOHAMMAD HASSANLI, PEYMAN AFRASIAB, and HAMED EBRAHIMIAN, “EVALUATION OF AQUACROP VS SALTMED MODELS TO ESTIMATE CROP YIELD AND SOIL SALINITY,” IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, vol. 46, no. 3, pp. 487–498, 2015, [Online]. Available: https://sid.ir/paper/225741/en

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