i agree with what Ghost said here, but if you are wondering if rut hunting tactics might still be valid here are some thoughts......
if you plan on stand hunting in a low pressure area, id definately try some rattling and or calling. last year i killed a small buck i rattled in on the last day of bowseason before 1st shotgun season. like Ghost said it greatly depends on age class, buck to doe ratio, and finding the right buck in the wrong mood!!
but, unfortunatly areas like that hardly exist in Iowa during shotgun season. the deer will be running everywhere and may not be interested in calling, or at least not enough to investigate.
good luck!!