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
Allegany-Steuben Summer Vegetable Meeting, 2025

August 19, 2025
Wellsville, NY
Field walk featuring crop protection best practices, skill practice, and farmer-to-farmer discussions. Vine crop fruit diseases and insect management, tomato foliar diseases including late blight, and cole crops will be special focuses.
2.0 DEC credits available in 1a, 10 and 23.
2025 Chipping Potato Twilight Meeting

September 4, 2025
Dansville, NY
Join us for a brief, on-farm meeting including insect pest updates and viewing of the chipping potato variety trial. 1.0 DEC credits in categories 10, 1a, and 23 will be offered. Dinner follows!