Maize diseases

Every guide

• Fall Armyworm High Pest Windowpane damage (scraped, translucent patches) on young leaves from small larvae. Ragged holes and a characteristic row of perforations across leaves
• Gray Leaf Spot High Fungal Early: small tan spots (1 to 3 mm), irregular, often with yellow/chlorotic borders. Mature: long, narrow, rectangular grey-to-tan lesions running between leaf veins
• Helminthosporiosis (Southern Corn Leaf Blight) High Fungal Small diamond-shaped lesions at first, which elongate as they mature. Mature lesions rectangular, tan to brown, about 2 to 3 cm long, limited by leaf veins
• Maize Streak (Stripe) Virus High Viral Small chlorotic (pale yellow to white) spots appearing first on young leaves. Spots develop into long, narrow, parallel streaks or broken stripes along the leaf veins
• Northern Leaf Blight (Turcicum Leaf Blight) High Fungal Early lesions are narrow tan streaks running parallel to the leaf veins, with a water-soaked look. Lesions expand into long cigar-shaped or elliptical gray-green to tan…
• Common Rust Medium Fungal Small, powdery pustules on both leaf surfaces, golden-brown to cinnamon-brown. Pustules erupt through the leaf and release rusty (brick-red) spores
• Curvularia Leaf Spot Medium Fungal Small (about 1 to 5 mm), round to oval tan to light-brown lesions. Reddish-brown margins around the lesions
• Healthy Maize Low Healthy plant Upright, uniformly green leaves with no spots, streaks, or lesions. No rust pustules on either leaf surface