Early-Season Corn Disease: Northern Corn Leaf Blight
Joshua Putman, Field Crops and Forage Specialist
Southwest New York Dairy, Livestock and Field Crops Program

In 2019, northern corn leaf blight (NCLB) appeared throughout the Southwest New York region. In general, NCLB is more of an issue in fields with a history of continuous corn production however, this year, the environment has been conducive for the infection to occur in first year corn fields as well. Environmental conditions of 65-85F, sporadic rain events, and humidity can result in an NCLB infection. Early NCLB symptoms appear as long, narrow, tan lesions that form on the leaf surface of a corn plant. As the disease progresses, the lesions become longer, more oblong, or "cigar-shaped" and can appear grayish in color. These lesions can range from 1-8 inches long with multiple lesions forming dense, irregular areas of dead tissue on the corn leaves. Cornell University Field Crops Plant Pathologist, Dr. Gary Bergstrom, recommends we scout our fields now for early disease detection. For more information visit Purdue University Extension or contact Field Crops Specialist, Josh Putman.
Upcoming Events
NY Beef Producers Association Region 4 Annual Meeting
April 4, 2026
Alfred, NY
Open to all interested beef and dairy producers!
Presentations:
- Tube Feeding 101
- Early Calf Care Tips
- Handling Livestock Safely
Membership in the beef producer association is not required to attend. New memberships and renewals will be accepted at the meeting; drawing will be held for 1 free membership or renewal.
MILKING IT: Moving Milk Quality Forward
April 14, 2026
Springville, NY
***SAVE THE DATE***
More details to come!
April 14th from 11am-1pm
Education sessions by:
- CCE SWNY Dairy, Livestock and Field Crops
- Springville Veterinary Services, P.C.
- Quality Milk Production Services
New York Application for Dairy of Distinction
April 15, 2026
Purpose of Program
Attractive dairy farms give the consumer greater confidence in the wholesomeness of milk and stimulate milk sales which encourages public support of the dairy industry. The award gives recognition to the dairy farmer for maintaining a well-kept farmstead.
Announcements
No announcements at this time.





