The fruit rots of the custard apple

Abstract

Phomopsis anonacearum Bondartzeva-Monteverde was isolated from fruit affected by black canker. Though pathogenicity tests were inconclusive, it is considered that the fungus is responsible for the disease. A marginal leaf scorch is attributed to the same organism. The phycomycete Phytophthora palmivora Butler is responsible for the purple blotch. Botryodiplodia theobromae Pat. was shown by pathogenicity tests to be the cause of Diplodia rot.