International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 6
First page : (459) Last page : (463)
Article doi: http://dx.doi.org/10.18782/2320-7051.6046
Calibration and Validation of DSSAT Model v4.6 for Kharif Rice in Agro-Climatic Zone (IIIB) of Bihar
Koushik Sar1* and S. S. Mahdi2
1Institute of Agriculture, Visva Bharati, Sriiniketan-731236, West Bengal, India
2Department of Agronomy, sher-e-kashmir University of agricultural sciences and technology, J&K-180009
*Corresponding Author E-mail: koushiksar1@gmail.com
Received: 28.10.2017 | Revised: 25.11.2017 | Accepted: 1.12.2017
ABSTRACT
The DSSAT model v4.6 was calibrated and validated for Kharif rice (cv. Rajendra Mahsuri-1) using the experimental data of 6 years (2008-2014) of Research Farm, ARI, Patna for rice with sowing date range of 13-22 July for rice . The yield attributes, phenological stages as simulated by model were compared with the observed data. The result revealed that the model underestimated the yields of the cultivar and overestimated rest of the parameters. The average error percent of pod yield, anthesis and maturity for cv. Rajendra Mahsuri-1 as simulated by DSSAT model were 1.46, 1.94 and 1.62 respectively. Simulated growth and development (anthesis, physiological maturity and grain yield) were close to observed and measured parameters for all the years of study. Based on these results it can be concluded that the model was very robust in predicting the critical phenological growth stages and yield of rice cultivar Rajendra Mahsuri-1 in agro-climatic zone (IIIB) of Bihar.
Key words: Rice, Simulation modeling, Crop growth, Yield and Validation
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Sar, K. and Mahdi, S. S., Calibration and Validation of DSSAT Model v4.6 for Kharif Rice in Agro-Climatic Zone (IIIB) of Bihar, Int. J. Pure App. Biosci.5(6): 459-463 (2017). doi: http://dx.doi.org/10.18782/2320-7051.6046
