Modeling the Interactive Effects of Atmospheric CO sub(2) and N on Rice Growth and Yield

Most models of climate change effects on crop productivity do not account for complexities introduced by nitrogen (N) and water supplies. The Oryza2000 model was tested for the case of rice growth and yield under free air carbon dioxide enrichment and varying N fertilization rates in rice paddies in...

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Bibliographic Details
Published in:Field crops research 2005-09, Vol.93 (2), p.237-237
Main Authors: Bannayan, Mohammad, Kobayashi, Kazuhiko, Kim, Han-Yong, Lieffering, Mark, Okada, Masumi, Miura, Shu
Format: Article
Language:English
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Summary:Most models of climate change effects on crop productivity do not account for complexities introduced by nitrogen (N) and water supplies. The Oryza2000 model was tested for the case of rice growth and yield under free air carbon dioxide enrichment and varying N fertilization rates in rice paddies in northern Japan. Simulations show that the model greatly overestimates the increase in peak green leaf area index caused by elevated CO sub(2), but only slightly overestimates total plant biomass enhancement. Oryza2000 successfully modeled increased rice yield due to CO sub(2) enrichment, but did not perform well at incorporating N fertilization interactions in the rice yield response to elevated CO sub(2).
ISSN:0378-4290