U.S. farmers will harvest a record 13.3 billion bushels of corn -- a quarter-billion bushels more than forecast a month ago -- thanks to beneficial late-season rain, the government said on Wednesday.

The Agriculture Department forecast a soybean crop of 2.62 billon bushels, down slightly from its initial forecast. USDA said the wheat stockpile will shrink to 362 million bushels by next spring, the smallest supply since 1973/74.