Posted 9/5/2020 21:23 (#8478168 - in reply to #8478084) Subject: RE: southern rust
NC KS
Is your corn dented? I think that is the dividing line between treat or not. The other factor is the rust itself. Did you find a leaf here and there with a spot on it or are most plants infected and most lower leaves infected? Just spots here and there, I would wait but check every 2-3 days.
southern rust
