The use of protectant fungicides can increase the incidence of white mold in potatoes.
Protectant fungicides such as those containing chlorothalonil (e.g. Bravo) and mancozeb (e.g. Manzate) have the potential to increase white mold severity in potato if a fungicide program does not have a component spray that is effective against white mold. The handout listed here shows slides from a presentation prepared for the Potato Association of America’s annual meeting in Quebec, Canada on July 29, 2013.