Agriculture And Climate Change

Matthew Yglesias on the Texas drought:

For the town this is not, per se, a giant problem. People just wish their lawns were greener. But in the countryside all around, it really is a huge problem for farmers and ranchers and shows no signs of letting up. It’s a reminder, again, that while human beings can live under all sorts of different climactic conditions we have in practice made large fixed investments in particular places anticipating particular conditions. As climate change renders these previous decisions no longer workable, the costs of adjusting are ubiquitous and large.

The other day at a seed dealer's customer appreciation day, the agronomist made a comment that corn pollen doesn't handle temperatures over 90 degrees F.  He mentioned that much of July, when the corn was trying to pollenate, saw 90+ degree temperatures.  I asked Dad whether $11,000 an acre seemed like a good investment if the summer temperatures in the current Corn Belt would regularly be in the 90s.  I don't think it would be.  What do you think?