CHICAGO, Aug 11 (Reuters) - Chicago Board of Trade corn futures firmed on Monday on spillover support from sharply higher soybeans, although gains were limited by hefty supplies as traders expect U.S. farmers to harvest a bumper crop this autumn.
Corn futures recently touched multi-month lows, which sparked increased export demand and limited further price declines.
Grain traders were squaring positions on Monday ahead of the U.S. Department of Agriculture's monthly supply and demand report due on Tuesday. The agency is expected to raise its U.S. corn harvest forecast and project a larger stockpile in the coming year.
Analysts, polled ahead of the USDA's weekly crop progress and conditions report, expect the agency to lower its corn crop rating to 72% good to excellent, down a point from a week earlier.
CBOT December corn futures CZ25 ended 2-1/4 cents higher at $4.07-3/4 per bushel.