Food versus Fuel: An Updated and Expanded Evidence
Karel Janda (),
Ladislav Krištoufek () and
David Zilberman ()
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Ondrej Filip: Institute of Economic Studies, Faculty of Social Sciences, Charles University in Prague, Smetanovo nabrezi 6, 111 01 Prague 1, Czech Republic
No 2017/26, Working Papers IES from Charles University Prague, Faculty of Social Sciences, Institute of Economic Studies
This paper replicates and extends the study of Zhang et al. (2010): „Food versus fuel: What do prices tell us?" Energy Policy 38, pp. 445-451. We confirm the findings of the original paper that there was only a weak relationship between ethanol and food commodities in the period between March 1989 and July 2008. In addition, we extend that study and examine the cointegration relationship between biofuels and related commodities for a considerably enlarged dataset (3 vs. 1 market, 26 vs. 8 commodities, analysis up till 2017 vs. 2008, weekly vs. monthly data frequency). Focusing on the biofuel markets of Brazil, the EU and the USA in the three separate periods before, during, and after the food crisis of 2007 and 2008, we show that studying the time variation of the relationships plays an essential role in their proper understanding. Our results help to clarify the wide extensive discussion about the role of biofuels prices in food shortages manifested particularly during the food crises. In agreement with the original study, we confirm that price series data do not support strong statements about biofuels uniformly serving as main leading source of high food prices and consequently the food shortages.
Keywords: biofuels; fuels; food; cointegration (search for similar items in EconPapers)
JEL-codes: Q16 Q42 Q56 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-agr and nep-ene
Date: 2017-11, Revised 2017-11
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