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.