Traders react in the Corn Options Pit at the CME group in Chicago, July 11, 2012, after the U.S. Department of Agriculture (USDA) updated its crop production, ending stocks and world supply/demand forecast. A scorching drought across the Midwest will slash corn yields by much more than most analysts had expected, the government said in a report that reignited a record rally in grain prices. REUTERS/John Gress (UNITED STATES - Tags: FOOD BUSINESS COMMODITIES)