Early blight
specific symptoms. Damage symptoms Alternaria solani causes small green to dark brown spots to occur on leaves. Those spots then turn into dark brown angular lesions [...] of leaves, Alternaria solani can spread to the flowers (especially dangerous in crops for seed production) and to the crown. Sporulation of Alternaria occurs [...] Spores are dispersed by wind and in some species through the splash of rain. How to prevent Early blight Remove crop residues, weeds and volunteer plants. Use