For what it's worth, this chart released by the Kansas City Federal Reserve Bank shows past and expected commodity and energy costs for farming for the three growing seasons from 2008 to 2011. Commodities included are corn, soybeans, wheat, rice, cattle, hogs, broilers, milk, crude oil, and natural gas. Of these, the only commodities predicted to decrease in price next year are rice, natural gas, and possibly milk, according to the chart.
source: KC Federal Reserve Bank
source: KC Federal Reserve Bank