AFS agronomists are encouraging the scouting of corn fields for tar spot, even if the combines are already in the field. It's too late to address this season, but confirming the disease's presence will help prioritize field management for 2023.  

Tar spot is known to reduce yields by as much as 50 bushels per acre. The disease also has the ability to affect stalk quality. In many areas, it seemed that tar spot made an appearance late in the season. 

If you have questions on if you are seeing tar spot in your fields give your trusted AFS agronomist a call.