- Narrow distribution. Only found in the Madang area of Papua New Guinea. On coconut, betel and banana. A major disease.
- Coconuts with yellowing, drooping leaves, early nutfall, and rapid death. Banana plants with yellow leaves and dark streaks in the vascular tissues.
- Spread by insect is presumed, but not yet identified.
- Biosecurity: To contain the disease, there are restrictions on plant movements from the Province to elsewhere in Papua New Guinea, unless it passes through a period of quarantine.
- Cultural and chemical control: none recommended.
Pacific Pests, Pathogens, Weeds & Pesticides
Coconut Bogia disease (229)
Photo 1. Dying and dead coconut palms with Bogia coconut syndrome, Madang Province, Papua New Guinea.
Bogia coconut syndrome
There is no scientific name of the disease; it is known by its common name. Analysis of diseased coconuts (and bananas) have found phytoplasmas associated with diseased plants. Analysis of ribosomal RNA of the phytoplasma has shown that they belong to a group code named 16SrIV.
AUTHOR Grahame Jackson
Information (and Photo 5) Kelly et al. (2011). First report of a phytoplasma identified in coconut palms (Cocos nucifera) with lethal yellowing-like symptoms in Papua New Guinea. New Disease Reports 23:9 (doi: 10.5197/j.2044-0588.2011.023.009); and Davis et al. (2012) A new wilt disease of banana plants associated with phytoplasma in Papua New Guinea (PNG). Australasian Plant Disease Notes 7: 91-97. (https://www.researchgate.net/publication/257801469); and from Pilotti et al. (2014) Putative vectors of a phytoplasma associated with coconut (Cocos nucifera) in Madang Province, Papua New Guinea. International Journal of Agriculture and Forestry 4: 365-372 (doi: 10.5923/j.ijaf.20140405.04); and from Lethal disease of coconut: Phytoplasma (2019) Department of Agriculture, Water and the Environment. (https://www.agriculture.gov.au/biosecurity/australia/naqs/naqs-target-lists/lethal_diseases_of_coconut). Photos 1&3 Luigi Guarino Global Crop Diversity Trust, Bonn. Photo 2 Richard Markham, ACIAR, Canberra. Photo 4 Geoff Gurr, Charles Sturt University, Orange, 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.