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The Problem
Jump to the SolutionNorthern corn leaf blight
- Cause: Exserohilum turcicum, also known as Setosphaeria turcica
- Environment: Moderate to warm temperatures combined with prolonged leaf wetness.
- Timing: Infection occurs before or around tasseling, with symptoms becoming apparent from tasseling through grain fill.
- Appearance: Large, elongated lesions that are gray-green to tan in color. Lesions begin on lower leaves and progress upward and may lead to leaf blighting.
- Risk: Yield loss, decreased photosynthetic leaf area, premature leaf death, reduced kernel size and increased risk of lodging.
Northern corn leaf blight on a corn plant
Close-up of Northern corn leaf blight
Lesions expand and move upward through canopy
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Understanding Northern Corn Leaf Blight in Corn
Northern corn leaf blight develops when Exserohilum turcicum infects corn leaves, and it can survive on infected residue from previous seasons. The disease progresses rapidly under favorable conditions and may intensify late in the season if not managed. The disease can manifest in three key ways:
Lower canopy infection
Lesions first appear on lower leaves where moisture persists longer.
Canopy spread
Lesions move upward through the plant, reducing green leaf area.
Yield impact
Loss of functional leaf tissue during grain fill reduces carbohydrate production and kernel development.
Why Northern Corn Leaf Blight Matters
Northern corn leaf blight is a common, yield‑limiting foliar disease. In susceptible hybrids or high‑pressure years, the disease can significantly reduce yield potential and crop standability. Timely identification and management are critical to protecting crop performance and profitability.
Since Northern corn leaf blight favors moderate temperatures and prolonged leaf wetness, it is commonly found across the northern Corn Belt like Minnesota, Wisconsin and Michigan, though it can appear further south if cooler, wet conditions persist.
The Solution
Use Miravis Neo to Fight Northern corn leaf blight
Use Miravis Neo to Fight Northern corn leaf blight
- Active Ingredients: ADEPIDYN® technology, Azoxystrobin, Propiconazole
- Why Miravis Neo Works: Delivers dual-yield protection with broad‑spectrum disease control with a long‑lasting residual and added plant‑health benefits.
- Crops: Corn and Soybeans
- Benefits: Delivers consistent, comprehensive control and is the only premium fungicide labeled for Fusarium / Gibberella ear rots.
Why Use a Cleaner & Greener Fungicide?
From disease to crop stress, you don't know what the season will bring so your yield potential needs protection on all fronts! That's why only Cleaner & Greener fungicides are powered by exclusive ADEPIDYN® and SOLATENOL® technologies to provide a step change in broad-spectrum disease control and protection from crop stress like drought.
