Worldwide distribution. In tropics. On tomato, capsicum, chilli, and eggplant. An important disease.
Dark fungal patches on lower leaves progressing upwards. Leaves turn yellow rapidly and die. Fruits are not infected.
Spores on underside of leaves spread in wind-blow rain.
Cultural control: avoid planting next to old crops; remove and burn leaves as infections occur; seek advice on tolerant varieties; 3-year crop rotation; collect trash and burn after harvest.
Chemical control: copper, chlorothalonil, or mancozeb (protectants). Begin when flowers appear, then at 10-14 day intervals until 3-4 weeks from harvest. Note that mancozeb has a 5-day withholding period.