Bhaskaran, R.Kandaswamy, T. K.2015-06-292015-06-291977East African Agricultural and Forestry Journal, 43 (no.1), pp. 5-80012-8325http://localhost:8080/dspace/handle/0/997In recent years. cultivation of sunflower(Helianthus annauL.) has gamed importance In several pants of lndia. During the same period a number of diseases of serious proportions 'have been reported on this crop [3. 5].Of the several diseases. the leaf spot disease caused by Alternaria helianthi (Hansf.) Tubaki and Nishihira 'Occurs in an epiphytotic form in several parts of India [I]. As no detailed information is available in literature on the epidemiology of the disease, studies were undertaken in this laboratory and the results Are presented in this paper.enhttp://creativecommons.org/licenses/by/3.0/Journal ContributionEpidemiologyLeaf spotsSunflowersCultivation