I’m not sure and wondering if this might be leaf spot disease (Mycosphaerella macrospora formely Didymellina macrospora)? Check out the included link below for more information and treatment. Best you contact the local Agricultural Extension Service for a confirmed diagnosis. Best wishes!
Oop! Sorry Bobby for some reason I didn’t see your post when I logged on. It showed an unanswered post.
I think whenever I share several links in the same post, it takes longer for the answered post to show.