USA - USDA dropped corn yields drastically
http://usda.mannlib.cornell.edu/usda/current/wasde/wasde-10-08-2010.pdf
11-Oct-2010 (15 years 7 months 28 days ago)U.S. feed grain production for 2010/11 is projected lower this month based on reduced forecasts for corn and sorghum.
. Corn production is forecast 496 million bushels lower as a 258,000-acre increase in harvested area is more than offset by a 6.7-bushel-per-acre reduction in yield. As forecast, this year’s yield and production still would be the third highest on record.