Document Type : Research Paper
Authors
Abstract
Testing the asymmetric price transmission along supply chain from producer through consumer has great important in economic applied for measuring competitiveness degree of different markets. The present study, investigate the price relations between the producer level and the consumer level for milk in Iran. Data used in the research include consumer price index and producer price index for Milk covering monthly periods of 91 months since March 2001 to October 2008. Johansen's and Juselius's cointegration technique and Grenger causality test were used to examine whether there is a relationship between the two indices and to determine causality direction. The behavior of price transmission was analyzed based on the Hack's traditional method and utilizing Von Cramon-Loy ECM model (1998). The results indicate that there is a long-term relationship between each pair of producer and consumer prices. There is a two-way relation between consumer prices and producer prices in both short-term and long-term periods. The results reject the hypothesis of asymmetry in price transmission in short-term but it confirm the hypothesis of asymmetry in price transmission in long-term. The article suggests the implication of its results in the government policy intervention and more study around marketing margin and changing in producer-consumer welfare.
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