Late Blight in Potato
The primary host is potato, but P. infestans also can infect other solanaceous plants, including tomatoes, petunias and hairy nightshade, that can act as source of inoculum to potato.
In North America, late blight survives between seasons in infected seed tubers, cull piles and volunteer plants. Knowing the symptoms and disease cycle of this rapidly destructive disease is necessary to implement management options.
