Yes - this year in Ohio is a great example, many farmers are rained out of planting much of anything at all.

Hit up the Ohio turnpike around Toledo and notice that at least half of the fields aren't even planted (just an eyeball guess on my part, take that "at least half" with a grain of alt). Rain has been too heavy this year and a lot of wheat and corn either couldn't be planted or the crop looks absolutely pitiful.