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Climate change may create price volatility in the corn market, say Stanford and Purdue researchers
Date:4/22/2012

olatility could increase sharply over the period from 2020 to 2040. Increasing heat waves will lead to low-yield years, and government-mandated corn sales to ethanol producers limit the market's ability to buffer against low-yield years.

"By limiting the ability of commodity markets to adjust to yield fluctuations, biofuels mandates work in exactly the wrong direction," said Thomas Hertel, a professor of agricultural economics at Purdue University who participated in the study.

"Our results suggest that energy policy decisions are likely to interact with climate change to affect corn price volatility, and that the market effect of a binding biofuel mandate is likely to intensify as the climate warms," Diffenbaugh said.

Diffenbaugh and Hertel also explored the potential of farmers to adapt to the changing climate. They found that, unless corn farmers increase their crops' heat tolerance by as much as 6 degrees Fahrenheit, the areas of high corn production would have to move northward from the current U.S. corn belt to near the Canadian border in order to avoid excessive heat extremes.

"Our goal was to explore the interacting influences of climate, energy markets and energy policy," said Diffenbaugh. "It is clear from our results that those policy decisions could strongly affect the impacts that climate change has on people. And, importantly, we also identify potential opportunities for reducing those impacts through adaptation."


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Contact: Rob Jordan
rjordan@stanford.edu
650-725-7510
Stanford University
Source:Eurekalert  

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