Abstract

Samples of rice amber infected with the saw-toothed grain beetle were collected from
local markets in the city of Kirkuk during the month of December 2021, and incubator
the experiments were conducted in the laboratories of the Colleges of Education for
Pure Sciences and Veterinary Medicine at the University of Kirkuk for the period from
February to May 2022, Three nanomaterials were used in this study, which included
(nano gold, nano titanium dioxide and nano iron oxide). The toxic effects of these
nanoparticles were studied at four different concentrations (0, 500, 1000, 1500) ppm
on the life of the saw-toothed grain beetle as the rate of egg laying duration Larval and
pupa phases and the rate of killing of its adults. The incubation period for the eggs
reached 11.08 days in the titanium dioxide treatment while the incubation period for
the eggs reached 10.62 and 9.99 days in the nano gold and nano iron oxide treatments
respectively, Compared to the comparison treatment, which was 8.59 days . titanium
dioxide showed a significant effect on the duration of the larval stage which amounted
to 18.84 days while it reached 18.03 and 17.32 days in the nano gold and iron oxide
treatments respectively, Compared with the comparison treatment, which amounted to
15.5 days . while in the pupa stage the period reached 5.93 days in the titanium dioxide
treatment and there were no differences Significant differences between gold
nanoparticles and iron oxide nanoparticles were 5.42 and 5.38 days respectively,
compared to the comparison treatment, which amounted to 4.00 days. and the
nanomaterials showed a clear effect on the rates of Dead as it reached 100 % in adults
of the sawn grain beetle 16 days after the start of the experiment, Compared to thecomparison treatment, which amounted to 45.55 % . Based on our results
nanomaterials can be used as effective pesticides to control insects especially sawtoothed
grain beetle