Just as farmers are putting their final touches on the harvest season, another crisis is hurting the grain export industry.

Coupled with high diesel prices and a possible railroad strike, farmers are now facing a rapidly drying Mississippi River. Here's Curt Kimmel, a Hedging strategist at AgMarket-dot-net.

According to Kimmel, if the U.S. does not get rain, exporters would need to rely on the trucking industry more this year compared to years past. Kimmel reports a train of barges can hold around 8-hundred thousand bushels of grain, but they are being forced to fill the barges less than halfway to keep them from running aground.