بررسي رابطه بين قيمت هاي توليدكننده و مصرف كننده (مطالعه موردي بخشي از محصولات لبني در ايران)

A Study of Relationship between the price of Producer and Consumer (A review of the section of dairy Products in Iran)

In the last decade, the analysis of price relationship along production chain from producer through consumer has been a common tool for measuring efficiency rate and competitiveness of different markets. Markets of agricultural products, meat and dairy are received the most attention by researchers. In the present paper, we studied the price relations and how price is transmitted between the producer level and the consumer level for cheese. Data used in the research include consumer price index and producer price index for cheese covering monthly periods of 91 months since March 200 I to October 2008. Johansenʹs and Juseliusʹs cointegration method and Granger 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 Hackʹs traditional method and utilizing Von Cram on-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 causality direction from consumer prices to producer prices in both short-term and long-term periods. The results reject the hypothesis of asymmetry in price transmission between producer prices and consumer prices. The article suggests the implication of its results in the government policy intervention and more study around marketing margin and change in producer-consumer welfare.