Validation of the AquaCrop model for irrigated rice production under varied water regimes in Bangladesh

M. Maniruzzaman, M.S.U. Talukder, M.H. Khan, J.C. Biswas and A. Nemes

Agricultural Water Management, 2015, vol. 159, issue C, 331-340

Abstract: Crop growth simulation models of varying complexity have been developed to predict the effects of soil, water, nutrients and climate on biomass and grain yields and water use efficiency of different crops. In this study, the AquaCrop model was calibrated and validated for rice crop growth modeling under different irrigation water regimes at the Bangladesh Rice Research Institute, Gazipur, Bangladesh during the 2008–09 and 2009–10 winter (dry) seasons. Three irrigation water regimes were examined: irrigation with continuous standing water (CSW), and irrigation at 3 or 5 days after water disappearance (3 or 5 DAWD) from the field as potential water saving adaptations. Model performance was evaluated in terms of prediction error (Pe), coefficient of determination (R2), the normalized root mean squared error (NRSME), the Nash–Sutcliffe model efficiency coefficient (EF) and Willmott’s index of agreement (d). The model calibration yielded 0.94Keywords: Crop model; Dry season; Water use efficiency; Soil water balance; Crop yield; Nash–Sutcliffe efficiency (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:159:y:2015:i:c:p:331-340

DOI: 10.1016/j.agwat.2015.06.022

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