Cercospora arachidicola only infects peanut plants, causing symptoms of brown lesions with chlorotic rings on the stems, leaves, and petioles. The first macroscopic symptoms usually appear on the adaxial surface of the lower leaves about 30 to 50 days after planting. Further damage can lead to premature defoliation and even yield loss. Signs include tufts of silvery, hair-like spores on lesions during humid weather.
