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"Crude oil price is believed to be one of the factors that affect food commodity prices. It is an
agricultural production input, therefore the prices of fertilizer, fuel and transportation are affected by the crude oil prices directly, and subsequently they influence the production of grain commodities. There is another dimension to how oil prices can affect food commodity prices, and it is from the derived demand for biofuels. With rising oil prices, demand for biofuels increase and the production
of these fuel is highly dependent on the availability of agricultural feed stocks. So it is primarily because of the above two dynamics that I want to investigate if there is a long term relationship between crude oil prices and food commodity prices. This is an important issue in present times because of the rising prices and volatility in the oil and food commodity markets. I will try to examine if there exist a cointegrating relationship between crude oil price and food commodity price for the period between 1980 to 2011. The food commodities selected are maize, rice, soybean and wheat. Time Series econometric techniques were applied to find our results. The Engle-Granger Co-integration test revealed that there is long run relationship between crude oil prices and maize, soybean, wheat. But, rice prices were not found to be cointegrated. I also carried out the traditional Granger Causality test to check whether causality exist between the two prices. We find that there is unidirectional causality, with only crude oil prices ‘Granger causing’ each of the four food commodity prices. The reverse was not true, as crude oil prices were not found to be influenced by price of food commodities. So from our results we can confirm the significance of oil prices and the impact it has on the food commodity prices."