The role of inventory adjustments in quantifying factors causing food price inflation
AbstractThe food commodity price increases beginning in 2001 and culminating in the food crisis of 2007/08 reflected a combination of several factors, including economic growth, biofuel expansion, exchange rate fluctuations, and energy price inflation. To quantify these influences, the authors developed an empirical model that also included crop inventory adjustments. The study shows that, if inventory effects are not taken into account, the impacts of the various factors on food commodity price inflation would be overestimated. If the analysis ignores crop inventory adjustments, it indicates that prices of corn, soybean, rapeseed, rice, and wheat would have been, respectively, 42, 38, 52, and 45 percent lower than the corresponding observed prices in 2007. If inventories are properly taken into account, the contributions of the above mentioned factors to those commodity prices are 36, 26, 26, and 35 percent, respectively. Those four factors, taken together, explain 70 percent of the price increase for corn, 55 percent for soybean, 54 percent for wheat, and 47 percent for rice during the 2001-2007 period. Other factors, such as speculation, trade policy, and weather shocks, which are not included in the analysis, might be responsible for the remaining contribution to the food commodity price increases.
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Bibliographic InfoPaper provided by The World Bank in its series Policy Research Working Paper Series with number 5744.
Date of creation: 01 Aug 2011
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Markets and Market Access; Economic Theory&Research; Food&Beverage Industry; Access to Markets; Currencies and Exchange Rates;
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- Birur, Dileep & Hertel, Thomas & Tyner, Wally, 2008. "Impact of Biofuel Production on World Agricultural Markets: A Computable General Equilibrium Analysis," GTAP Working Papers 2413, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University.
- Hochman Gal & Sexton Steven E & Zilberman David D, 2008. "The Economics of Biofuel Policy and Biotechnology," Journal of Agricultural & Food Industrial Organization, De Gruyter, vol. 6(2), pages 1-24, December.
- Peters, May & Langley, Suchada V. & Westcott, Paul C., 2009. "Agricultural Commodity Price Spikes in the 1970s and 1990s: Valuable Lessons for Today," Amber Waves, United States Department of Agriculture, Economic Research Service, March.
- Kelvin Balcombe & George Rapsomanikis, 2008. "Bayesian Estimation and Selection of Nonlinear Vector Error Correction Models: The Case of the Sugar-Ethanol-Oil Nexus in Brazil," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 90(3), pages 658-668.
- Gal Hochman & Deepak Rajagopal & David Zilberman, 2010. "Are Biofuels the Culprit? OPEC, Food, and Fuel," American Economic Review, American Economic Association, vol. 100(2), pages 183-87, May.
- De Hoyos, Rafael E. & Medvedev, Denis, 2009.
"Poverty effects of higher food prices : a global perspective,"
Policy Research Working Paper Series
4887, The World Bank.
- Rafael E. de Hoyos & Denis Medvedev, 2011. "Poverty Effects of Higher Food Prices: A Global Perspective," Review of Development Economics, Wiley Blackwell, vol. 15(3), pages 387-402, 08.
- Thomas W. Hertel, 1999.
"Applied General Equilibrium Analysis of Agricultural and Resource Policies,"
GTAP Working Papers
297, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University.
- Hertel, Thomas W., 2002. "Applied general equilibrium analysis of agricultural and resource policies," Handbook of Agricultural Economics, in: B. L. Gardner & G. C. Rausser (ed.), Handbook of Agricultural Economics, edition 1, volume 2, chapter 26, pages 1373-1419 Elsevier.
- Joachim von Braun, 2008.
"Rising Food Prices: What Should Be Done?,"
The Agricultural Economics Society, vol. 7(SpecialIs), pages 30-35, 08.
- Trostle, Ronald, 2008. "Fluctuating Food Commodity Prices: A Complex Issue With No Easy Answers," Amber Waves, United States Department of Agriculture, Economic Research Service, November.
- Yang, Hong & Zhou, Yuan & Liu, Junguo, 2009. "Land and water requirements of biofuel and implications for food supply and the environment in China," Energy Policy, Elsevier, vol. 37(5), pages 1876-1885, May.
- Subramanian, S. & Deaton, A., 1994.
"The Demand for Food and Calories,"
175, Princeton, Woodrow Wilson School - Development Studies.
- Williams,Jeffrey C. & Wright,Brian D., 1991.
"Storage and Commodity Markets,"
Cambridge University Press, number 9780521326162, December.
- Alexandre Gohin, 2008. "Impacts of the European Biofuel Policy on the Farm Sector: A General Equilibrium Assessment," Review of Agricultural Economics, Agricultural and Applied Economics Association, vol. 30(4), pages 623-641.
- Alston, Julian M. & Pardey, Philip G. & Roseboom, Johannes, 1998. "Financing agricultural research: International investment patterns and policy perspectives," World Development, Elsevier, vol. 26(6), pages 1057-1071, June.
- Jean-Marc Burniaux & John P. Martin & Giuseppe Nicoletti & Joaquim Oliveira Martins, 1992. "The Costs of Reducing CO2 Emissions: A Technical Manual," OECD Economics Department Working Papers 115, OECD Publishing.
- Mitchell, Donald, 2008. "A note on rising food prices," Policy Research Working Paper Series 4682, The World Bank.
- Baffes, John & Haniotis, Tassos, 2010. "Placing the 2006/08 commodity price boom into perspective," Policy Research Working Paper Series 5371, The World Bank.
- Rajagopal, Deepak & Zilberman, David, 2008. "Environmental, Economic and Policy Aspects of Biofuels," Foundations and Trends(R) in Microeconomics, now publishers, vol. 4(5), pages 353-468, October.
- Keith Fuglie & David Schimmelpfennig, 2010. "Introduction to the special issue on agricultural productivity growth: a closer look at large, developing countries," Journal of Productivity Analysis, Springer, vol. 33(3), pages 169-172, June.
- Bhattacharyya, Subhes C., 1996. "Applied general equilibrium models for energy studies: a survey," Energy Economics, Elsevier, vol. 18(3), pages 145-164, July.
- Alejandro Nin-Pratt & Bingxin Yu & Shenggen Fan, 2010. "Comparisons of agricultural productivity growth in China and India," Journal of Productivity Analysis, Springer, vol. 33(3), pages 209-223, June.
- Trostle, Ronald, 2008. "Factors Contributing to Recent Increases in Food Commodity Prices (PowerPoint)," Seminars 43902, USDA Economists Group.
- Mabiso, Athur & Weatherspoon, Dave D., 2008. "Fuel and Food Tradeoffs: A Preliminary Analysis of South African Food Consumption Patterns," 2008 Annual Meeting, July 27-29, 2008, Orlando, Florida 6126, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
- Goldemberg, José & Guardabassi, Patricia, 2009. "Are biofuels a feasible option?," Energy Policy, Elsevier, vol. 37(1), pages 10-14, January.
- Hochman, Gal & Sexton, Steven & Zilberman, David D., 2010.
"The Economics of Trade, Biofuel, and the Environment,"
Department of Agricultural & Resource Economics, UC Berkeley, Working Paper Series
qt5h03r349, Department of Agricultural & Resource Economics, UC Berkeley.
- Hochman, Gal & Sexton, Steven E. & Zilberman, David D., 2010. "The economics of trade, biofuel, and the environment," CUDARE Working Paper Series 1100, University of California at Berkeley, Department of Agricultural and Resource Economics and Policy.
- Baka, Jennifer & Roland-Holst, David, 2009. "Food or fuel? What European farmers can contribute to Europe's transport energy requirements and the Doha Round," Energy Policy, Elsevier, vol. 37(7), pages 2505-2513, July.
- Ivanic, Maros & Martin, William J., 2010. "Promoting global agricultural growth and poverty reduction," 114th Seminar, April 15-16, 2010, Berlin, Germany 61098, European Association of Agricultural Economists.
- Chantal Nielsen & Kym Anderson, 2001. "Global market effects of alternative European responses to genetically modified organisms," Review of World Economics (Weltwirtschaftliches Archiv), Springer, vol. 137(2), pages 320-346, June.
- Dixon, Peter B. & Parmenter, B.R., 1996. "Computable general equilibrium modelling for policy analysis and forecasting," Handbook of Computational Economics, in: H. M. Amman & D. A. Kendrick & J. Rust (ed.), Handbook of Computational Economics, edition 1, volume 1, chapter 1, pages 3-85 Elsevier.
- Leucci, A. C. & Ghinoi, S. & Sgargi, D. & Wesz, V. J., Jr., 2013. "Variation and links among food and energy international prices. An analysis through VAR models from 2000 to 2012," 2013 Second Congress, June 6-7, 2013, Parma, Italy 149923, Italian Association of Agricultural and Applied Economics (AIEAA).
- Gbadebo Oladosu & Siwa Msangi, 2013. "Biofuel-Food Market Interactions: A Review of Modeling Approaches and Findings," Agriculture, MDPI, Open Access Journal, vol. 3(1), pages 53-71, February.
- Gal Hochman & Scott Kaplan & Deepak Rajagopal & David Zilberman, 2012. "Biofuel and Food-Commodity Prices," Agriculture, MDPI, Open Access Journal, vol. 2(3), pages 272-281, September.
- Cororaton, Caesar B. & Timilsina, Govinda R. & Mevel, Simon, 2010.
"Impacts Of Large Scale Expansion Of Biofuels On Global Poverty And Income Distribution,"
Proceedings Issues, 2010: Climate Change in World Agriculture: Mitigation, Adaptation, Trade and Food Security, June 2010, Stuttgart- Hohenheim, Germany
91279, International Agricultural Trade Research Consortium.
- Cororaton, Caesar B. & Timilsina, Govinda R., 2012. "Impacts of large-scale expansion of biofuels on global poverty and income distribution," Policy Research Working Paper Series 6078, The World Bank.
- Rausser, Gordon C. & de Gorter, Harry, 2013. "US policy contributions to agricultural commodity price fluctuations, 2006.12," Working Paper Series UNU-WIDER Research Paper , World Institute for Development Economic Research (UNU-WIDER).
- Serra, Teresa & Zilberman, David, 2013. "Biofuel-related price transmission literature: A review," Energy Economics, Elsevier, vol. 37(C), pages 141-151.
- Drabik, Dusan, 2011. "The Theory of Biofuel Policy and Food Grain Prices," Working Papers 126615, Cornell University, Department of Applied Economics and Management.
- Baffes, John & Dennis, Allen, 2013. "Long-term drivers of food prices," Policy Research Working Paper Series 6455, The World Bank.
- Gutierrez, L. & Piras, F., 2013. "A Global Wheat Market Model (GLOWMM) for the Analysis of Wheat Export Prices," 2013 Second Congress, June 6-7, 2013, Parma, Italy 149760, Italian Association of Agricultural and Applied Economics (AIEAA).
- Barrows, Geoffrey & Sexton, Steven & Zilberman, David, 2013.
"The Impact of Agricultural Biotechnology on Supply and Land-Use,"
Department of Agricultural & Resource Economics, UC Berkeley, Working Paper Series
qt3rg0c0fz, Department of Agricultural & Resource Economics, UC Berkeley.
- Barrows, Geoffrey & Sexton, Steven & Zilberman, David, 2013. "The Impact of Agricultural Biotechnology on Supply and Land-Use," CUDARE Working Paper Series 1133, University of California at Berkeley, Department of Agricultural and Resource Economics and Policy.
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