Pathogen. The fungus persists in plant refuse in the soil, on weeds and on other susceptible hosts.
Disease development. Infection occurs when windblown spores germinate on the foliage. Temperatures above 18°C favour disease development.
circles or pepper spots on leaves
the rings of early blight lesions Brown spot lesions may coalesce to form larger necrotic
areas with dark brown margins These necrotic areas usually form near the edges of leaflets
pressure is very high
