My parents operated an aerial application service in Mississippi, and back in the early days of phenoxy, my father or one of his pilots let some move from rice to adjoining cotton. The cotton farmer talked with my father about it, and they agreed to take up the subject again once the season was over and see about how to make it right.

This was way before the days of Pix, of course. 

After the cotton was in, the farmer called my father and said the phenoxy didn't hurt yields at all and, in fact, he'd pay $500 if my father could figure out what kind of rate settled over the field. It ended up being some of the best cotton he'd ever picked, even though it appeared that the drift had "set it back."