Variety review pages cover GLS-resistant hybrid selection.
Corn Production
What is gray leaf spot and how do I manage it?
Gray leaf spot (GLS) is a fungal disease producing rectangular gray lesions on corn leaves. Severe infections reduce photosynthesis and yield 20-40%. Manage with resistant hybrids (most important), crop rotation away from corn, residue management (tillage breaks down infected residue), and fungicides at tassel for high-pressure years.
More from Corn Production
- When should I plant corn in my state?
- What soil temperature does corn need to germinate?
- What is corn relative maturity and how do I choose the right RM?
- How do I choose a corn hybrid for my region?
- What is tar spot in corn and is it in my area?
- How much nitrogen does corn need?
- What causes corn to lodge and how do I prevent it?
- When is corn ready to harvest for grain?
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