The U.S. is by far the world's biggest corn producer, and the United Nations has warned of higher food prices.
The Agriculture Department slashed the U.S. projected corn production to 10.8 billion bushels. That's down from its forecast last month of close to 13 billion bushels. It would be the lowest production since 2006.
The USDA says it expects corn growers to average 123.4 bushels per acre, down 24 bushels from last year - the lowest since 1995.
Soybean production is forecast at 2.69 billion bushels, a 12% decline from last year. Expected yields on average of 36.1 bushels per acre would be the lowest since 2003.
*Follow Fin24 on Twitter, Facebook and Google+.