Incidence, and effects on yield, of virus diseases of taro (Colocasia esculenta) in the Solomon Islands

A - Papers appearing in refereed journals

Gollifer, D. E., Jackson, G. V. H., Dabek, A. J. and Plumb, R. T. 1978. Incidence, and effects on yield, of virus diseases of taro (Colocasia esculenta) in the Solomon Islands. Annals of Applied Biology - AAB. 88 (1), pp. 131-135.

AuthorsGollifer, D. E., Jackson, G. V. H., Dabek, A. J. and Plumb, R. T.
Abstract

Two virus diseases, alomae and bobone, both of which are spread by the planthopper Tarophagus proserpina affect taro (Colocasia esculenta) on Malaita, Solomon Islands. Where the diseases were endemic, plants of 284 of 297 cultivars died from alomae infection; the remaining 13 showed bobone symptoms on three to five leaves and then recovered, but symptoms later recurred on 12–13% of plants. Loss of yield due to alomae infection was directly proportional to the percentage of plants infected. Losses due to bobone of c. 25% could not be reliably detected unless insect pests were controlled. Frequent sprays with 0–1% malathion had no appreciable effect on the incidence of alomae, but fewer plants (30%) were infected when planted in November or December than when planted in May, June or August (64–94%).

Because new taro crops are traditionally grown close to infected crops, insecticidal control of the vectors will probably be of limited use in decreasing spread of the diseases.

Year of Publication1978
JournalAnnals of Applied Biology - AAB
Journal citation88 (1), pp. 131-135
Digital Object Identifier (DOI)doi:10.1111/j.1744-7348.1978.tb00687.x
Open accessPublished as non-open access
Output statusPublished
Publication dates
Print01 Jan 1978
Online26 Feb 2008
Publication process dates
Accepted12 Jul 1977
Copyright licensePublisher copyright
PublisherWiley
ISSN0003-4746

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