Early-Season Corn Disease: Northern Corn Leaf Blight

Joshua Putman, Field Crops and Forage Specialist
Southwest New York Dairy, Livestock and Field Crops Program

July 22, 2020
Early-Season Corn Disease: Northern Corn Leaf Blight

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.




Field Crops

Field Crops

Dairy

Dairy

Business

Business

Livestock

Livestock

Grains

Grains

Upcoming Events

NY Beef Producers Assoc. & Chautauqua County Beef Producers Assoc. Region 2 Annual Meeting

March 24, 2026
Ellicottville, NY

Join us for an engaging and informative round table discussion focused on practical, performance driven cattle nutrition. This panel brings together industry leaders with hands on experience in dairy and beef strategies, ration formulation, ingredient sourcing, and on farm management.

All are welcome.

Membership is these beef producer groups is not required.

View NY Beef Producers Assoc. & Chautauqua County Beef Producers Assoc. Region 2 Annual Meeting Details

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.



View NY Beef Producers Association Region 4 Annual Meeting Details

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


View MILKING IT: Moving Milk Quality Forward Details

Announcements

No announcements at this time.

NEWSLETTER   |   CURRENT PROJECTS   |   IMPACT IN NY   |   SPONSORSHIP  |  RESOURCES   |   SITE MAP