Southern corn leaf blight
Area of impact: Leaves
Description: Long tan lesions of varying sizes between veins.
Pathogen involved: Cochliobolus heterostrophus (a fungus)
Timing/Conditions: Occurs during warm humid weather from mid-whorl stage to maturity.
Contributing factors: Monoculture and reduced tillage increase risk.
Management practices: Use resistant hybrids crop rotation and tillage.