Impact of neem-nanoemulsion and neem petroleum ether extract on some biological parameters of the internal parasitoid, Meteorus gyrator (Thub.) (Hymenoptera: Braconidae)

Abstract

In this study, both neem extract and neem nanoemulsion significantly decreased the adult emergence of Meteorus gyrator. It was found that all concentrations of neem nanoemulsion especially high concentrations (800, 400, and 200 ppm) have adversely affected some biological parameters of this parasitoid. Also, they have a harmful effect as reducing fecundity, oviposition, and shortened the longevity of M. gyrator.