Neither is planting (top sowing) wheat in the middle of August or using a silage chopper as a bush hog and blowing seeds on the ground, but thousands of doves are killed legally by those "normal agricultural practices"......bush hogging  a field of sweet corn, is a helluva lot more normal than "baited" wheat fields I've seen.

But to answer op's question, next to wheat, a picked cornfield is my favorite, especially if stalks have been bush hogged.