A field of corn is seen in Embrun, Ontario, October 16, 2010. Senior OECD (Organisation for Economic Co-operation and Development) official Carmel Cahill told Reuters on Friday she does not expect a repeat of the 2007-2008 food crisis because market fundamentals are different now. Cahill added that grain markets were overreacting to the crop situation in Russia and the United States and there is no global shortage of wheat and corn at the present. REUTERS/Shaun Best (CANADA – Tags: AGRICULTURE BUSINESS) – RTXTIIA