Corn Diseases - Tamra Jackson-Ziems The 2026 planting season is right around the corner, once that seed is in the ground you’ve got a lot riding on it protecting that investment starts with staying ahead of disease. Southern Rust caught a lot of corn producers off guard late last season. So, what should be on your radar in 2026? We recently caught up with UNL Extension Plant Pathologist Tamra Jackson-Ziems to talk about the disease pressure she's watching this year.