Abstract
Mode of perpetuation of 4 pathogens viz. Cercospora carthami Sundararaman and Ramakrishnan, Ramularia carthami Zaprometov, Cercospora linicola Pavgi and Rathaiah and Cercospora sesamicola Mohanty inciting leaf spot diseases of safflower, flax and sesame has been investigated. C. carthami and C. linicola perpetuate through a) the vegetative saprobic mycelium and b) viable stromata embedded in the crop debris. R. carthami and C. sesamicola perpetuate only through the viable sclerotia in the crop debris.
