Not many pastures in our part of Minnesota, but DNR loves to burn their wildlife areas. They do it on a rotational system, and it does really help the grass. Can't figure out where all the pheasants go during the burns, but the numbers don't seem to hurt over it.
Can't believe the burning that goes on in Kansas between the pastures and the wheat stubble. There have been trips down there when I was praying for a good old fashioned blizzard just to get better visibility on the highway.