Evaluation of Weather-Based Rice Yield Models in India

Sudharsan, D and Adinarayana, J and Reddy, D R and Sreenivas, G and Ninomiya, S and Hirafuji, M and Kiura, T and Tanaka, K and Desai, U B and Merchant, S N (2013) Evaluation of Weather-Based Rice Yield Models in India. International Journal of Biometeorology, 57 (1). pp. 107-123. ISSN 0020-7128

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The objective of this study was to compare two different rice simulation models-standalone (Decision Support System for Agrotechnology Transfer [DSSAT]) and web based (SImulation Model for RIce-Weather relations [SIMRIW])-with agrometeorological data and agronomic parameters for estimation of rice crop production in southern semi-arid tropics of India. Studies were carried out on the BPT5204 rice variety to evaluate two crop simulation models. Long-term experiments were conducted in a research farm of Acharya N G Ranga Agricultural University (ANGRAU), Hyderabad, India. Initially, the results were obtained using 4 years (1994-1997) of data with weather parameters from a local weather station to evaluate DSSAT simulated results with observed values. Linear regression models used for the purpose showed a close relationship between DSSAT and observed yield. Subsequently, yield comparisons were also carried out with SIMRIW and DSSAT, and validated with actual observed values. Realizing the correlation coefficient values of SIMRIW simulation values in acceptable limits, further rice experiments in monsoon (Kharif) and post-monsoon (Rabi) agricultural seasons (2009, 2010 and 2011) were carried out with a location-specific distributed sensor network system. These proximal systems help to simulate dry weight, leaf area index and potential yield by the Java based SIMRIW on a daily/weekly/monthly/seasonal basis. These dynamic parameters are useful to the farming community for necessary decision making in a ubiquitous manner. However, SIMRIW requires fine tuning for better results/decision making

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IITH Creators:
IITH CreatorsORCiD
Item Type: Article
Uncontrolled Keywords: Model accuracy assessment; Stand-alone DSSAT; Weather-based rice yield models technologies; Web-based SIMRIW
Subjects: Others > Electricity
Divisions: Department of Electrical Engineering
Depositing User: Team Library
Date Deposited: 20 Nov 2014 07:50
Last Modified: 01 Jan 2016 06:47
URI: http://raiith.iith.ac.in/id/eprint/882
Publisher URL: http://dx.doi.org/10.1007/s00484-012-0538-6
OA policy: http://www.sherpa.ac.uk/romeo/issn/0020-7128/
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