Efficacy of rice husk silica nanoparticles against Sitophiliusoryzae (L) and Xanthomonasoryzae

Abstract

The nanoparticles have received much attention for controlling of insects pests instored grains. The efficacy of amorphous rice husk silica nanoparticles (93.14 nm) against Sitophiliusoryzae (L) and Xanthomonasoryzae were carried out. It was observed that, adult mortality of S. oryzae is dependent on dose and time after application. Adult mortality on 4thdays showed significantly highest adult mortality (100%) of S. oryzae with 175 and 200 ppm and negligible weight loss. The results of antibacterial study of SNPs against Xanthomonasoryzae revealed that the SNPs did not have antibacterial activity in vitro condition. Thus, the use of rice husk silica nanoparticles as pesticide in an alternative strategy to combat S. oryzae insect pest which have become resistance to conventional pesticides with ecofriendly way.