southern corn leaf blight-CORN021.JPG

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.

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