northern leaf spot-CORN025.JPG

Northern leaf spot

Area of impact: Leaves

Description: Gray to tan oval or circular spots that occur mainly on the leaves.

Pathogen involved: Cochliobolus carbonum (a fungus)

Timing/Conditions: Symptoms usually appear on lower leaves at silking or at full maturity and during warm humid weather.

Contributing factors: Overwinters on corn residue.

Management practices: Plant resistant varieties, use crop rotation, till debris at the end of the growing season and apply foliar fungicides if needed.

Ask an Agronomist

The material and content contained in the Greenbook label database is for general use information only. Agworld and Greenbook do not provide any guarantee or assurance that the information obtained through this service is accurate, current or correct, and are therefore not liable for any loss resulting, directly or indirectly, from reliance upon this service. This label database does not replace the official manufacture issued label. Users of this database must read and follow the actual product label affixed to the container before use of the product.