Integration of Selected Novel Pesticides with Trichogramma chilonis (Hymenoptera: Trichogrammatidae) for Management of Pests in Cotton

Selected pesticides widely used worldwide to control key pests on cotton plants were evaluated for integration with the Trichogramma chilonis (Ishii). Chlorantraniliprole showed a mean emergence of approximately ۷۹˗˗۸۲ and ۸۷˗˗۹۱% at both ۶.۲۵x and ۹.۴x doses when host eggs (Sitotroga cerealella Olivier) were treated at larval and pupal stage of parasitoids, respectively. Helicoverpa armigera NucleoPolyhedroses Virus (HaNPV) revealed mean emergence ranging from ۸۰ to ۸۴% at both ۱۲.۵x and ۶.۲۵x doses in the pupal stage treatment. Spiromesifen demonstrated mean emergence approximately ranging from ۸۲.۳۵ to ۸۸.۵۵% at ۵x, x, and ۰.۵x doses in both the egg and pupal stage treatments, and in addition at ۸.۳X dose in the pupal stage treatment. Spiromesifen led to mean emergence of ۸۸.۲۰ and ۷۹.۵۲% at ۲x and ۵x doses, respectively, when parasitoid was treated at larval stage. When individual T. chilonis females were exposed to the previously treated host eggs (S. cerealella), chlorantraniliprole resulted in mean parasitism ranging from ۱۷.۸۸ to ۲۰.۸۸ parasitized host eggs at both ۵x and ۳.۱۳x doses, while spiromesifen led to mean parasitism of ۷.۲۰ parasitized host eggs at ۱۰.۴x dose and showed significant effect on parasitism by parasitoid. The results indicated that the pesticides tested against emergence exhibited no significant toxic effects on the parasitoid.

کلیدواژه ها:

Chlorantraniliprole ، Emergence ، Integration ، Parasitism ، Trichogramma chilonis.