Video: How to Identify Foliar Symptoms of Bacterial Disease in Onion
Christy Hoepting, Extension Vegetable Specialist
Cornell Vegetable Program

In this video, see the different forms of foliar symptoms of bacterial diseases of onion and how to distinguish bacterial diseases from other non-bacterial lookalikes.
This video was produced by the CCE Cornell Vegetable Program for the Stop the Rot USDA-NIFA Project 2019-51181-30013.
Video Transcript: How to Identify Foliar Symptoms of Bacterial Disease in Onion (pdf; 112KB)

Upcoming Events
Small Vegetable Workshop
August 13, 2026
Fulton, NY
Identify vegetables that make sense to grow on small acreage, including under high and low tunnel season extension. Bill Ingersoll, owner of Ingersoll Farms, will provide a short tour and discuss other important factors of running a mixed vegetable farm, including a farm stand and selling at farmers' markets.
Chipping Potato and Field Crops Twilight Meeting
August 27, 2026
Dansville, NY
This year, our field meeting is bringing together field crops and chipping potatoes. SWNY Dairy, Livestock, and Field Crops Specialist Katelyn Miller will lead a field crops management discussion. Hear the latest updates in potato disease control and see the Cornell chipping potato variety trial run by Walter De Jong. Dinner follows the educational event.
1.5 DEC credits available in 10, 1a, 21, and 23.