8 MIN READ
Corn Disease Calendar
October 3, 2020
Here is an overview of corn diseases throughout the season.
Scouting for Corn Diseases
| Early Season Emergence to knee-high Seeding Blights Anthracnose Leaf Blight, Bacterial Wilt and Bacterial Leaf Blight (Stewart’s Wilt, Stewart’s Disease), Goss’s Wilt, Physoderma Brown Spot, Common Smut, High Plains Virus |
| Mid Season Knee-high to tasseling Anthracnose Leaf Blight, Bacterial Wilt and Bacterial Leaf Blight (Stewart’s Wilt, Stewart’s Disease), Goss’s Wilt, Physoderma Brown Spot, Common Smut, High Plains Virus Northern Leaf Blight, Southern Leaf Blight, Common Rust, Southern Rust, Crazy Top, Sorghum Downy Mildew, Anthracnose Top Dieback & Stalk Rot, Bacterial Stalk Rot, Pythium Stalk Rot, Maize Chlorotic Dwarf Virus, Maize Dwarf Mosaic Virus, Corn Lethal Necrosis, Eyespot, Tar Spot |
| Late Season Tasseling to maturity Anthracnose Leaf Blight, Bacterial Wilt and Bacterial Leaf Blight (Stewart’s Wilt, Stewart’s Disease), Goss’s Wilt, Physoderma Brown Spot, Common Smut, High Plains VirusNorthern Leaf Blight, Southern Leaf Blight, Common Rust, Southern Rust, Crazy Top, Sorghum Downy Mildew, Anthracnose Top Dieback & Stalk Rot, Bacterial Stalk Rot, Pythium Stalk Rot, Maize Chlorotic Dwarf Virus, Maize Dwarf Mosaic Virus, Corn Lethal NecrosisAll Ear & Kernel RotsGray Leaf Spot, Head Smut, Charcoal Rot, Diplodia Stalk Rot, Fusarium Stalk Rot, Gibberella Stalk Rot, Red Root Rot |
Leaf Diseases
Physoderma Brown Spot
Anthracnose Leaf Blight
Stewart's Bacterial Leaf Blight
Gray Leaf Spot
Southern Corn Leaf Blight
Eyespot
Southern Rust - Front Surface
Southern Rust - Back Surface
Tar Spot
Ear Rots
Diplodia Ear Rot
Gibberella Ear Rot
Aspergillus Ear Rot
Aspergillus Ear Rot
Smut/Virus/Fungal Systemic Diseases
Corn Lethal Necrosis
Maize Chlorotic Dwarf Virus
Maize Dwarf Mosaic Virus
High Plains Virus
Crazy Top
Stalk & Root Rots
Anthracnose Stalk Rot
Charcoal Rot
Gibberella Stalk Rot
Fusarium Stalk Rot
Red Root Rot
Red Root Rot
Diplodia Stalk Rot
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