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

Key Points

• 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.

Abstract