Effect of the Pyrifluquinazon hydrating agent to Orius strigicollis Poppius

Abstract

The Pyrifluquinazon hydrating agent is one of the efficient insecticides to Miridae pests and the selective insecticides that has low effect to natural enemies in egg plant fields that reducing pesticides. This insecticide as an insect behavior regulator is not clarified the mode of action. So we investigated the effect to biological features of Orius strigicollis as a model of the Orius’ natural enemies. We surveyed effect of the Pyrifluquinazon to survivorship, reproduction and feeding thrips of O. strigicollis. The preoviposition period of Pyrifluquinazon treated insects was significant longer than control, and the total number of eggs for 10 days after treated of the Pyrifluquinazon. But after starting oviposition, the egg numbers per a day of treated the Pyrifluquinazon was no significant different to control. So We consider the Pyrifluquinazon has less effect to biological features of the Orius natural enemies and can be used in combination with the Orius natural enemies in egg plants fields.