Price Linkages In The International Wheat Market
This paper brings time series techniques to bear on the relationships between the prices of the principal types of wheat traded internationally. In all, the relationships between eleven wheat prices (categorised by wheat quality, harvest date and port of despatch) are scrutinised to uncover the structure of the wheat market implicit in the behaviour its prices reveal. The statistical evidence supports the notion of a highly integrated market that is segmented according to wheat strength-the principal determinant of end-use. Three segments are identified: a market for 'strong' (bread-making) wheat, another for 'weak' (confectionary products-making) wheat and a third for medium strength wheat suitable for unleavened breads and noodles. Whilst informative, market integration - detected by cointegration among prices - is not altogether surprising, yet the presence of cointegration implies a causal structure, which is of more cogent interest. Among a number of complementary techniques, linkages are uncovered using an innovative concept of irreducible cointegration vectors (Davidson 1998, Barassi et al 2001) which provides new evidence on price linkages. Statistical evidence is robust and not test-dependent. Specifically, we find a dominant price leader in each sub-market. In terms of its pricing, the EU is found to play a passive role in the world market, confirming a widely held view.
|Date of creation:||2003|
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- Lutkepohl, Helmut & Reimers, Hans-Eggert, 1992. "Impulse response analysis of cointegrated systems," Journal of Economic Dynamics and Control, Elsevier, vol. 16(1), pages 53-78, January.
- Johansen, Soren, 1995. "Identifying restrictions of linear equations with applications to simultaneous equations and cointegration," Journal of Econometrics, Elsevier, vol. 69(1), pages 111-132, September.
- Granger, C. W. J. & Newbold, P., 1974. "Spurious regressions in econometrics," Journal of Econometrics, Elsevier, vol. 2(2), pages 111-120, July.
- Johansen, Soren, 1988. "Statistical analysis of cointegration vectors," Journal of Economic Dynamics and Control, Elsevier, vol. 12(2-3), pages 231-254.
- Wilson, William W. & Gallagher, Paul W., 1988.
"Differentiation and Implicit Prices in Export Wheat Markets,"
146454, North Dakota State University, Department of Agribusiness and Applied Economics.
- Wilson, William W., 1989. "Differentiation And Implicit Prices In Export Wheat Markets," Western Journal of Agricultural Economics, Western Agricultural Economics Association, vol. 14(01), July.
- Wilson, William W. & Gallagher, Paul W., 1988. "Differentiation and Implicit Prices in Export Wheat Markets," Statistical Series Reports 146454, North Dakota State University, Department of Agribusiness and Applied Economics.
- George J. Stigler & Robert A. Sherwin, 1983.
"The Extent of the Market,"
University of Chicago - George G. Stigler Center for Study of Economy and State
31, Chicago - Center for Study of Economy and State.
- Asche, F. & Bremnes, H. & Wessells, C.R., 1998.
"Product Aggregation, Market Integration and Relationships Between Prices: an Application to World Salmon Markets,"
27/98, Norwegian School of Economics and Business Administration-.
- Frank Asche & Helge Bremnes & Cathy R. Wessells, 1999. "Product Aggregation, Market Integration, and Relationships between Prices: An Application to World Salmon Markets," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 81(3), pages 568-581.
- Gloria Gonz�lez-Rivera & Steven M. Helfand, 2001. "The Extent, Pattern, and Degree of Market Integration: A Multivariate Approach for the Brazilian Rice Market," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 83(3), pages 576-592.
- Davidson, James, 1994. "Identifying Cointegrating Regressions by the Rank Condition," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 56(1), pages 105-10, February.
- Johansen, S., 1991.
"Testing Weak Exogeneity and the Order of Cointegration in UK Money Demand Data,"
78, Helsinki - Department of Economics.
- Johansen, Soren, 1992. "Testing weak exogeneity and the order of cointegration in UK money demand data," Journal of Policy Modeling, Elsevier, vol. 14(3), pages 313-334, June.
- Barassi, Marco R & Caporale, Guglielmo Maria & Hall, Stephen G, 2001. "Irreducibility and Structural Cointegrating Relations: An Application to the G-7 Long-Term Interest Rates," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 6(2), pages 127-38, April.
- Michele M. Veeman, 1987. "Hedonic Price Functions for Wheat in the World Market: Implications for Canadian Wheat Export Strategy," Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, Canadian Agricultural Economics Society/Societe canadienne d'agroeconomie, vol. 35(3), pages 535-552, November.
- Johansen, Soren & Juselius, Katarina, 1990. "Maximum Likelihood Estimation and Inference on Cointegration--With Applications to the Demand for Money," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 52(2), pages 169-210, May.
- Engle, Robert F & Granger, Clive W J, 1987. "Co-integration and Error Correction: Representation, Estimation, and Testing," Econometrica, Econometric Society, vol. 55(2), pages 251-76, March.
- Davidson, James, 1998. "Structural relations, cointegration and identification: some simple results and their application," Journal of Econometrics, Elsevier, vol. 87(1), pages 87-113, August.
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