Role of Adjuvants in Bacterial Diseases of Onions
Christy Hoepting, Extension Vegetable Specialist
Cornell Vegetable Program
Bacterial diseases of onions have become an increasing threat to the sustainability of the New York onion industry with losses of 40% or more occurring in some lots in some years. Recently, a New York onion grower suggested that the penetrating surfactants that Cornell entomologists strongly recommend to improve efficacy of insecticides for onion thrips control might be allowing for easy entry of bacterial pathogens into the leaves, thus increasing incidence of bacterial bulb decay. In this study we applied adjuvants LI700, MSO, Kinetic, Dyne-Amic and HiWett in combination with bacterial pathogens of onions to onion plants to see if higher levels of bacterial bulb decay resulted with adjuvants compared to water plus bacteria. Preliminary results indicated that a single application of adjuvant plus bacterial had no effect on bacterial bulb decay. The effect of multiple applications of adjuvants on bacterial bulb decay warrants further research.
ORDP Final Report 2012 (pdf; 235KB)
Upcoming Events
Wine Sensory Evaluation Workshop
April 26, 2024 : Wine Sensory Evaluation Workshop
Staatsburg, NY
In collaboration with Jeremy Schuster, Viticulture Specialist at the ENYCHP, Dr. Anna Katharine Mansfield and Chris Gerling, Enology Extension Specialists with the Cornell Craft Beverage Institute, will be presenting a wine production-focused, interactive workshop on sensory evaluation.
What is my vine trying to tell me?
May 15, 2024 : What is my vine trying to tell me?
Plattsburgh, NY
Are your grapevines showing signs of discoloration or stunted growth? Don't ignore these warning signs! Join us on May 15th at the Cliton County CCE office to learn about the essential nutrients that grapevines require to thrive, identify the symptoms of nutrient deficiencies, and how to fix them. Don't miss out on this opportunity to improve your grapevine cultivation skills! Attendance is free, but registration is required.
How man's best friend can help find Spotted Lanternfly
May 21, 2024
Millbrook, NY
Come and join us at the Dutchess County CCE office on May 21st for a special demonstration by Jennifer Fimbel, the Agriculture and Horticulture Program Leader with Dutchess County CCE. You will get to see her SLF K9 Cole in action as they demonstrate how man's best friend can be used to detect the Spotted Lanternfly. Attendance is free, but registration is required