Bücher von Fadwa Mohamadeen

Traditional pest management strategies could be replaced by the potential of nanotechnology as an effective and viable approach to alleviate problems pertaining to pest control given the unique characteristics of that technology, especially the metal nanoparticles. In this research, we synthesized silver nanoparticles (AgNPs), zinc oxide nanoparticles (ZnONPs) by the chemical reduction method. The instrumentation such as TEM, SEM, UV-visible spectroscopy was used to reveal the morphology and size of nanoparticles (which was the seam grain with rough ends in AgNPs and size ranged between 20-50 nm), (the shape was amorphous with sharp edges, 60-128 nm in ZnONPs) and the characterization of bought Silica nanoparticles indicates that was approximately spherical with the diameter between 20-60nm. In bioassays, larvae were exposed to a series concentration of Ag, ZnO and SiO NPs by feeding and dipping method. Mortality rates obtained with SiO, ZnO and Ag NPs at the highest concentration were 90 %,86 % and 60 %, respectively. ZnO nanoparticles reach the high percentages in inhibition of pupation and inhibition of adult formation (100% in both).