The critical role of extreme heat for maize production in the United States

David B. Lobell (), Graeme L. Hammer, Greg McLean, Carlos Messina, Michael Roberts and Wolfram Schlenker
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David B. Lobell: Stanford University
Graeme L. Hammer: The University of Queensland, Queensland Alliance For Agriculture and Food Innovation
Greg McLean: Forestry, and Fisheries
Carlos Messina: Pioneer Hi-Bred International
Wolfram Schlenker: University of California

Nature Climate Change, 2013, vol. 3, issue 5, 497-501

Abstract: Statistical analysis of maize yields in the United States reveals a strong negative response to very high temperatures, and a relatively weak response to seasonal rainfall. Now simulations using a process-based model suggest that the most important effects of extreme heat are associated with increased vapour-pressure deficit—which contributes to water stress—rather than direct heat stress on reproductive organs.

Date: 2013
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DOI: 10.1038/nclimate1832

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