Abstract
An outbreak of black-tip disease, caused by Deightoniella torulosa , in a plantation of Lacatan bananas was particularly severe where soil drainage was poor and atmospheric humidity high. Symptoms were more advanced than any recorded previously in Jamaica. In a few specimens, there was extensive dry rotting of the inner pulp, from which Verticillium theobromae was isolated. D. torulosa was isolated from necrosed peel but not from decayed pulp. External symptoms included those of both black-tip and cigar-end diseases. The evidence suggests that this type of tip-rot is a result of primary infection by D. torulosa , followed later by V. theobromae .
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