That would make last year's output the largest in U.S. history, surpassing the crop of 13.1B bushels in 2009.
If confirmed, the estimates are likely to add pressure to corn prices, which hit a 3 1/2 year low of $4.08 a bushel yesterday before closing at $4.12. That was still down 1.2%, with the decline also due to falling exports. Corn has dropped 2.4% this year after plummeting 40% in 2013.
Wheat prices suffered as well yesterday from poor overseas sales, hitting a two-year low of $5.785 a bushel before recovering a bit to close -0.8% at $5.8425.