It's a good idea eventually, it's hugely oversold, and farmers are worried that the speculation has driven corn to unprofitable lows. If it has a gap up, which I'm hoping isn't the case, I think the shorts have taken their profit, and are going to see where they can short it too now, given the other markets haven't really effected it. But if they don't, then the price can shoot up.
When it turns, it'll likely have a bit of a sideways market, and then start going back up. Also, though a great deal of the drought has seemed to not effect the corn, one major thing could happen, the transport loads could stil get spoiled due to the heat, and final processing numbers haven't been calculated, so there is a series of things that can cause this market to turn.