This raises the issue of market integration, and the degree to which prices of key commodities in India follow or cause price movements in international markets. The evidence presented in Box 2.2 suggests that for some commodities, such as rice, Indian markets impact on global markets, but for the most part the connection between the domestic and international markets is weak or non-existent. Weak connection between markets is due to policy structures in India, such as market support prices, intervention programmes, export restrictions and tariffs which sever market linkages (Gulati et al.,