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- Title
Simulation of rice yield under different irrigation and nitrogen application managements by CropSyst model.
- Authors
ZARE, Narjes; KHALEDIAN, Mohammadreza; PIRMORADIAN, Nader; REZAEI, Mojtaba
- Abstract
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.
- Subjects
RICE yields; NITROGEN in soils; IRRIGATION; COMPUTER simulation; PLANT growth
- Publication
Acta Agriculturae Slovenica, 2014, Vol 103, Issue 2, p181
- ISSN
1581-9175
- Publication type
Article
- DOI
10.14720/aas.2014.103.2.3