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
2025 Potato Advisory Meeting
December 16, 2025
Canandaigua, NY
Come hear the latest on insect pest control and fertility management in potatoes from Cornell University experts. Potato variety trial updates will be shared too. After lunch will be the Empire State Potato Grower's Meeting. 1.5 DEC credits in 10, 1a, and 23.
2026 Finger Lakes Produce Auction Winter Growers Meeting
January 8, 2026
Penn Yan, NY
At this vegetable grower-focused meeting, ag industry experts will discuss food safety, disease management in strawberries, the benefits of using cover crops, plus more. Two grower panel discussions will focus on pest management techniques and irrigation. DEC recertification credits offered in categories 10, 1a, 21, 22, 23, and 24.