Cercospora leaf spots of cowpea begin as small, lighter coloured areas, almost yellow. Later they become bronze to dark grey, roughly circular to more elongated and up to 10 mm across [3]. There will be chlorotic spots on upper surfaces of leaves, masses of spores on lesions which resemble black mats on lower leaf surface, and necrotic spots on leaves [7].
Cercospora leaf spots of cowpea begin as pale yellowish patches that darken to bronze or dark grey, with irregular shapes up to 10 mm in diameter [3]. These lesions also feature chlorotic spots on the upper surface, masses of spores resembling black mats on the lower surface, and necrotic spots on leaves [7].