Simple Summary The polyphagous agricultural pest Spodoptera frugiperda (JE Smith) has a
high level of chemical pesticide resistance. This study's objective is to create and assess the
effectiveness of CuO NPs (copper oxide nanoparticles) with a variety of tests against S.
frugiperda for larvicidal, antifeedant, immunological, and enzymatic activities. Energy
dispersive X-ray (EDaX) analysis and a scanning electron microscope (SEM) were used to
analyze copper nanoparticles for the identification of physical and chemical properties. The …