Pacific Pests, Pathogens and Weeds - Online edition

Pacific Pests, Pathogens, Weeds & Pesticides

Giant swamp taro corm rot (203)

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  • Worldwide distribution. On giant swamp taro, coconuts and other palms, bananas, pepper, brassicas, coffee, ginger, and many more. An important disease.
  • Shallow brown dry corm rots, leaving holes 5-20 mm diameter and 10-20 mm deep, sometimes to the corm centre. Fine roots mostly absent. Leaves die early.
  • Spread is on the 'tops' used for planting. •
  • Cultural control: clean planting material (i) remove roots; (ii) remove outer leaves; (iii) cut out any rots (wipe knife in bleach) wash to remove soil; avoid leaving plant parts removed in the field while preparing the tops: burn them.
  • Chemical control: none recommended.
Common Name

Giant swamp taro corm rot

Scientific Name

Radopholus similis

AUTHOR Grahame Jackson
Information from Zhao ZQ, Crosby TK (2011) Burrowing Nematode (Radopholus similis): PaDIL -; and from Jackson GVH (1986) Preliminary results from surveys of plant diseases in the Federated States of Micronesia and Palau. Proceedings: UNDP/FAO/GTZ/IRETA Regional Crop Protection Workshop. 8-12 September, 1986, Apia, Western Samoa. Photo 3 Fred Brooks, Plant and Environmental Protection Services, University of Hawaii at Manoa, Honolulu.

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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