Corn futures were selling hard after today's USDA report showed that U.S. has 846 million bushels in surplus corn inventories. 

Corn for March delivery was down $0.40 to $6.11 per bushel, well off its 52-week high of $7.86 per bushel.

Meanwhile, wheat tumbled 6.18% to $6.01 per bushel, and cotton fell 1.14% to 95.77 cents per pound.

Here's a look at corn tanking today.

corn futures