Simulation of rice yield under different irrigation and nitrogen application managements by CropSyst model


  • Narjes ZARE Water Engineering Department, Faculty of Agricultural Sciences, University of Guilan, Iran
  • Mohammadreza KHALEDIAN Water Engineering Department, Faculty of Agricultural Sciences, University of Guilan, Iran
  • Nader PIRMORADIAN Water Engineering Department, Faculty of Agricultural Sciences, University of Guilan, Iran
  • Mojtaba REZAEI Rice Research Institute, Rasht, Iran



oryza, rice, irrigation, flood irrigation, fertilizer application, nitrogen, plant models


The aim of this study was the calibration and validation of CropSyst model for rice in the city of Rasht. The necessary data were extracted from a field experiment which was carried out during 2005-2007 in a split-plot design. The main plots were irrigation regimes including continuous flooding irrigation and 5-day irrigation intervals. The subplots consisted of four nitrogen levels: zero N application, 45, 60 and 75 kg N ha-1. Normalized Root Mean Squared Error (nRMSE) and Residual Mass Coefficient (Crm) in calibration years were 9.3 % and 0.06, respectively. In validation year, nRMSE and Crm were 9.7 % and 0.11, respectively. According to other indices to assess irrigation regimes and fertilizer levels, the most suitable treatments regarding environmental aspect were 5-day irrigation regime and 45 kg N ha-1.


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4. 12. 2015



Agronomy section

How to Cite

ZARE, N., KHALEDIAN, M., PIRMORADIAN, N., & REZAEI, M. (2015). Simulation of rice yield under different irrigation and nitrogen application managements by CropSyst model. Acta Agriculturae Slovenica, 103(2), 181–190.

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