R. Yousefnezhad Irani - Department of Plant Protection, Agricultural Faculty, Urmia University, Urmia, Islamic Republic of Iran.
Y. Karimpour - Department of Plant Protection, Agricultural Faculty, Urmia University, Urmia, Islamic Republic of Iran.
M. Ziaee - Department of Plant Protection, Agricultural Faculty, Shahid Chamran University of Ahvaz, Ahvaz, Islamic Republic of Iran.

The persistence effects of Silica Nanoparticles (SNPs), namely, Nanosav and Aerosil®, were evaluated on several pulses for controlling Callosobruchus maculatus (F.) (Coleoptera: Chrysomelidae). For this purpose, one kg of each pulse was treated with four concentrations (۵۰, ۱۰۰, ۲۰۰, and ۳۰۰ mg kg-۱) of each SNPs. The sampling was tested after ۰, ۲, ۴, and ۶ months’ storage period following the treatment. Adults were introduced to these samples and the number of dead adults was counted ۱, ۲, and ۴ days after the exposure to the treated pulses. The percentage decrease in F۱ progeny was calculated ۴۲ days later. The mortality was ۱۰۰% in black gram, cowpea, green gram, and chickpea when treated at a concentration of ۳۰۰ mg.kg-۱ of both SNP formulations in ۰-month post-treatment four days after the exposure. No progeny was observed in lentil treated with ۳۰۰ mg kg-۱ of Nanosav in ۰-month post-treatment. Another experiment was conducted to calculate SNPs adherence to the seeds. The highest adherence was on the black gram with ۸۶ and ۹۹.۵%, in Nanosav and Aerosil®, respectively. Our results indicated that two SNPs had insecticidal activity against C. maculatus and can be used effectively in integrated pest management program of C. maculatus in stored pulses.

Aerosil nanosilica, Infestation, Integrated pest management, Nanosav nanosilica, Weevil