Early and late leafspots of peanut

Abstract

Early leafspot and late leafspot are the most serious diseases of peanut in Papua New Guinea and world-wide. The diseases are caused by different but closely related fungi: early leafspot by Cercospora arachidicola,  and  ate  leafspot by Phaeoisariopsis personata. Yield losses vary depending on the climatic conditions. In severe cases over half the crop can be lost.