How to cite this article:
Abduz Zahir, A.,Bagavan, A., Kamaraj, C., Elango, G. and Abdul Rahuman, A. 2012. Efficacy of plant-mediated synthesizedsilver nanoparticles against Sitophilusoryzae. Journal of Biopesticides,5(0): 95-102.
Silvernanoparticles (Ag NPs) were synthesized by using aqueous leaves extracts of Euphorbiaprostrata as a simple, non-toxic and ecofriendly green material. Thepresent study was based on assessments of the pesticidal activity to determinethe efficacies of aqueous leaves extracts of E. prostrata, silvernitrate (AgNO3) solution (1mM)and synthesized Ag NPs against the adult of Sitophilus oryzae L. Thesynthesized nanoparticles were characterized with UV- visible spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) andScanning electron microscope (SEM) analysis. The nanoparticles were rod inshape and size of 25- 80nm with an average size of 52.4 nm. Pesticidalbioassay tests were conducted at varying concentrations for 14 days. The LD50 values ofaqueous extract, AgNO3solutionand synthesized Ag NPs were 213.32, 247.90, 44.69 mg/kg -1; LD90=1648.08,2675.13, 168.28 mg/kg -1, respectively.These results suggest that the leaves aqueous extracts of E. prostrata,and synthesized Ag NPs have the potential to be used as an ideal eco-friendlyapproach for the control of the S. oryzae. This is the first report onthe pesticidal activity of the plant extracts and synthesized nanoparticles.
How to cite this article:
Abduz Zahir, A.,Bagavan, A., Kamaraj, C., Elango, G. and Abdul Rahuman, A. 2012. Efficacy of plant-mediated synthesizedsilver nanoparticles against Sitophilusoryzae. Journal of Biopesticides,5(0): 95-102.
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