Assessment of rice yield gap under a changing climate in India

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dc.contributor.authorDebnath, Subhankaren
dc.contributor.authorMishra, Ashoken
dc.contributor.authorMailapalli, D. R.en
dc.contributor.authorRaghuwanshi, N. S.en
dc.contributor.authorSridhar, Venkataramanaen
dc.contributor.departmentBiological Systems Engineeringen
dc.date.accessioned2021-07-26T13:38:11Zen
dc.date.available2021-07-26T13:38:11Zen
dc.date.issued2021-06en
dc.description.abstractClimate change evokes future food security concerns and needs for sustainable intensification of agriculture. The explicit knowledge about crop yield gap at country level may help in identifying management strategies for sustainable agricultural production to meet future food demand. In this study, we assessed the rice yield gap under projected climate change scenario in India at 0.25 degrees x 0.25 degrees spatial resolution by using the Decision Support System for Agrotechnology Transfer (DSSAT) model. The simulated spatial yield results show that mean actual yield under rainfed conditions (Y-a) will reduce from 2.13 t/ha in historical period 1981-2005 to 1.67 t/ha during the 2030s (2016-2040) and 2040s (2026-2050), respectively, under the RCP 8.5 scenario. On the other hand, mean rainfed yield gap shows no change (approximate to 1.49 t/ha) in the future. Temporal analysis of yield indicates that Y-a is expected to decrease in the considerably large portion of the study area (30-60%) under expected future climate conditions. As a result, yield gap is expected to either stagnate or increase in 50.6 and 48.7% of the study area during the two future periods, respectively. The research outcome indicates the need for identifying plausible best management strategies to reduce the yield gap under expected future climate conditions for sustainable rice production in India.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.2166/wcc.2020.086en
dc.identifier.eissn2408-9354en
dc.identifier.issn2040-2244en
dc.identifier.issue4en
dc.identifier.urihttp://hdl.handle.net/10919/104398en
dc.identifier.volume12en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectclimate changeen
dc.subjectDSSATen
dc.subjectIndiaen
dc.subjectriceen
dc.subjectyield gapen
dc.titleAssessment of rice yield gap under a changing climate in Indiaen
dc.title.serialJournal of Water and Climate Changeen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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Scholarly Works, Biological Systems Engineering
Destination Area: Global Systems Science (GSS)