Photo 1. Bud rot of coconut showing the collapse of the spear and younger leaves due to infection by Phytophthora palmivora, while the older leaves appear relatively healthy at this time.
Photo 2. Nuts are also infected by coconut bud rot causing premature nutfall. In this case, Phytophthora hevae was isolated from the rot.
Coconut bud rot
Phytophthora palmivora. Note, there may be more than one species of Phytophthora in the Pacific islands causing bud rot. For instance, Phytophthora hevae is also said to occur, causing a bud and nut rot of coconuts in New Caledonia (Photos 2&3).
AUTHOR Grahame Jackson
Information (and Photo 1) Gerlach WWP (1988) Plant diseases of Western Samoa. Samoan German Crop Protection Project, Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ) Gmbh, Germany. Photos 2-5 Kohler F, Pellegrin F, Jackson G, McKenzie E (1997) Diseases of cultivated crops in Pacific Island countries. South Pacific Commission. Pirie Printers Pty Limited, Canberra, Australia.
Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community
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