Minnesota

Corn years are awful. When you go outside in the morning, you can watch the "corn fog" start as the sun hits the field. I don't think the corn is "sweating"... all plants transpire, and corn is a master at it.
Corn is also a water hog. There are enormous irrigation sprinklers that add more humidity.
Then there are the "corn flies" aka hoverflies. These little darlings will drive you to insanity. They Love you and want to be close to you...all the time.
Most of the corn grown here is biofuel, which is another topic altogether.
Watched a documentary years ago and there were satellite images of water vapor as the sun came up. The results were amazing, heavy water vapor all in the corn belt, including here in Kentucky.
The takeaway is one can't breathe water vapor and it is a very good at warming the environment.
Next year will be a wheat/soybean year and the water vapor will go down and the corn flies will be less numerous. We like those years!
I like corn, but I think its impact on the environment is more than has been reported.
Frankly, I wish they would grow hemp, but I ain't the farmer!