Abstract
In present study demonstrated that bio efficiency of Dicrocephala integrifolia plant extract used as a reducing agent for synthesis of silver nanoparticles (AgNPs) treated against Spodoptera litura and Helicoverpa armigera. The synthesized AgNPs were characterized through UV spectroscopy (UV–Vis), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), dynamic light scattering (DLS), and zeta potential analysis. The AgNPs treated larvae exhibited antifeedant activity against S. litura (76.94%) and H. armigera (79.24%). The obtained larval mortality rates (69.76% and 68.04%) with LC50 values of 99.39 ppm and 108.68 ppm and pupicidal rates (74.30% and 72.11%) against S. litura and H. armigera. X2 values were significant at the P ≤ 0.05 level. Histologically changes were observed in treated larval midgut tissues compared to control. These results suggested that biosynthesized NPs suitable for ecofriendly insect pest management.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
