Farmers use hog crap a lot... they have these giant barns that are fully automated with over 1000 hogs. The crap runs down the holes in the concrete floor and gets collected underneath and big pumper trucks pump it out and spray it on the fields...
We stayed at a lovely inn in Midway, Utah some years back that was situated next to some big crop fields. The weekend prior to our stay they held a beautiful wedding for some young bride and groom. You can guess what the farmer put down on his field right before the wedding! It was still a bit “fresh and earthy” smelling when we arrived.