When them cotton balls get a rottin‘

South Texas is famous for its cotton fields. Here the cotton is ready-to-pick:

It really begs the question: what happen if it rains?

The old western song made famous by the Bluegrass musician Bill Monroe tells „When them cotton balls get a rottin‘, you can‘t pick very much cotton.“ So presumably it is possible for cotton to rot.

But after a rain shower, do farmers worry about how much moisture the cotton has before harvesting?  Is the water content somehow tied to the price?  This is in fact the case for feed corn: the higher the water content, the lower the price.