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Integration and Price Transmission in Key Food Commodity Markets in India

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  • Boffa,Mauro
  • Varela,Gonzalo J.

Abstract

This paper examines patterns of market integration for food commodities in India. First, it tests the extent of domestic spatial market integration for retail and wholesale markets in 2006?14 and 2008?15, respectively, and looks at patterns of price transmission of shocks from international sources. Second, it measures vertical integration from wholesale to retail markets and tests for asymmetric speed of adjustment to shocks. Third, it examines the determinants of spatial integration. The results reveal that in India, food markets are imperfectly integrated across space, with the law of one price being systematically rejected, with heterogeneities across states and products. There is substantial co-movement between wholesale and retail prices, although integration is still imperfect in all commodities but one: rice, for which perfect vertical integration cannot be rejected. Retail prices adjust faster when wholesale prices rise than when wholesale prices fall. The analysis of the determinants of spatial integration reveals that prior to implementation of the Goods and Services Tax, the mere act of crossing a state border increased prices; unexploited gains from arbitrage persisted after considering the effects of transport costs; and information frictions and menu costs reduced market integration.

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  • Boffa,Mauro & Varela,Gonzalo J., 2019. "Integration and Price Transmission in Key Food Commodity Markets in India," Policy Research Working Paper Series 8755, The World Bank.
    • Handle: RePEc:wbk:wbrwps:8755
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    Keywords

    International Trade and Trade Rules; Transport Services; Trade and Services; Hydrology; Food Security;
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