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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(5): 2560-2566
DOI: https://doi.org/10.20546/ijcmas.2020.905.292


Evaluation of Evapotranspiration Methods for Rice Yield Simulation in a Tropical River Basin
Sonam Sandeep Dash1, Subhankar Debnath2* and Madhusmita Behera3
1School of Water Resources, Indian Institute of Technology Kharagpur, India2Centurion University of Technology and Management, Odisha, India3Soil Conservation, Government of Odisha, Odisha, India
*Corresponding author
Abstract:

Rice is the world's most consumed cereal grain, making up the dietary staple food of more than 60 percent of the world's population. For agriculture dominated country like India, the assessment of rice yield is of utmost importance for policy makers in managing the food security and water resources. The present study evaluates the efficiency of Soil and Water Assessment Tool (SWAT) to simulate rice yield during both kharif and rabi seasons in Brahmani River basin, and subsequently, identifies the appropriate evapotranspiration estimation approach for accurate quantification of crop water requirement, and irrigation scheduling. The outcomes of this study revealed that the two crop-specific model parameters, i.e., maximum leaf area index and radiation use efficiency affect the rice yield to greater extent. The SWAT simulates the rice yield better in the kharif season with NSE estimates of 0.81 and 0.79 during the calibration and validation period, respectively as compared to the rabi season. The crop growth dynamics is better conceptualized by the physically based FAO-56 PM approach than the Priestley and Taylor method in the study area. The outcomes of the study could be useful for the hydrologist and agronomist in developing decision support system for irrigation water management and crop yield assessment.


Keywords: Evapotranspiration;Hydrological modeling; Rice yield; River basin; SWAT
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How to cite this article:

Sonam Sandeep Dash, Subhankar Debnath and Madhusmita Behera. 2020. Evaluation of Evapotranspiration Methods for Rice Yield Simulation in a Tropical River Basin.Int.J.Curr.Microbiol.App.Sci. 9(5): 2560-2566. doi: https://doi.org/10.20546/ijcmas.2020.905.292