Occurrence of papaya ringspot virus disease in Thailand in relation to the migration of aphids
1993
Prasartsee, V. | Khongpolprom, W. (Northeast Regional Office of Agriculture, Khon Kaen (Thailand))
Papaya ringspot virus causes serious production losses in papaya in Northeast Thailand. The most prevalent aphid vector is A. gossypii which has acquisition-feeding periods as short as 25-60 seconds. Hysteroneura setariae, cereal aphid, was found to be a new vector of PRV. Aphid population collections showed that higher aphid populations occur in the cool winter months of October to February, with the lowest in the hot-dry summer months of April to July. Observation of virus spread in a virus-free village prior to replanting, revealed that initial infection and spread of the virus paralleled the population and migration of the aphid vectors.
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