Evaluation of AquaCrop Model to Simulate Canola (Brassica napus) Yield under Deficit Irrigation Scenarios in Gazvin Plain

Document Type : Research Paper


1 Associated professor, Department of irrigation and soil physics, Soil and Water Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran

2 Assistant Professor, Department of Water Sciences and Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran

3 Assistant professor of Department of irrigation and soil physics, Soil and Water Research Institute, Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran.


This study was conducted in Qazvin plain (with latitude 50˚ 8’ and longitude 36˚ 8’ and elevation 1240 m) during 2010-2012 to evaluate AquaCrop model for simulation of canola yield. The results showed that this model is very sensitive to transpiration crop coefficient and low to medium sensitive to other input parameters. Normalized root mean square errors (NRMSE) were 0.10, 0.04, 0.11 and 0.04 for yield, biomass, water use efficiency and harvest index, respectively. The values of agreement index (d) for the all parameters were greater than 0.98. Although, AquaCrop model tended to overestimate outputs; however, the simulation results could be acceptable.


Main Subjects

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