Phytophthora fruit and heart rots of coconut in Hawaii

Publication Type:

Journal Article


Plant disease, American Phytopathological Society, Volume 76, Number 9, p.925–927 (1992)



Serious fruit and heart rots of coconut were found on the major Hawaiian islands of Kauai, Oahu, Hawaii and Maui. Early symptoms included dark fruit rots and the premature loss of young nuts. A Phytophthora sp. was consistently associated with fruit rots. There was a high association of fruit rots and subsequent heart rot followed by tree death. Fruit and heart rots were reproduced by inoculations. The causal organism resembled P. katsurae, but its identification remains undetermined.