Insecticidal Activities of the Natural Pyrethrins Insecticide on the Tea Green Leafhopper, Matsumurasca onukii

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The study aims to evaluate the insecticidal and non-lethal effects of natural pyrethrins on Matsumurasca onukii.
Conducted indoor rearing tests on Matsumurasca onukii.
Applied natural pyrethrins to tea sprouts to assess mortality and non-lethal effects.
Meared mortality rates of larvae and adults after treatment and over time.
Approximately 50% mortality observed in larvae, while adult mortality remained around 20%.
Post-treatment, collected tea sprouts showed similar mortality rates for both life stages to untreated ones after just one day.
Significant reduction in exudation rates indicated a non-lethal effect on adults, suggesting feeding inhibition.

Research investigates the insecticidal effects of natural pyrethrins on the tea green leafhopper, suggesting limited residual efficacy.

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Yanagisawa et al. (2025) studied this question.

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