North Georgia has been very dry since May. Irritated lawns definitely look better than non irrigated. The iron sucrate helped with most of the dry spells since we get lots of humidity and morning dew in July and August. That moisture really helps the iron and slow release.We use a 21-0-21 at about that time, well end of July with good results at 200# per acre. 50% slow release N 3% Fe.
Problem now is no rain. They looked great through most of August. The non irrigation lawns look terrible.