The tomato fruit worm (Helicoverpa armigera) have been reported to be a very destructive pest on many crops including tomato prompting farmers to resort to the use of synthetic insecticides leading to environmental pollution and pest resistance to insecticides. Nanotechnology has been studied in various fields but limited research is done on its impact on agricultural insect pest management. Therefore silica nanoparticles was tested on H. armigera to determine its efficacy in the management of the pest.Limitations to the use of silica nanoparticles is that it is a relatively new technology,...