Screening the Larvicidal activity of ZnO, CuO NPs and neem seed oil extract mixtures against the full armyworm Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae)
The fall armyworm, Spodoptera frugiperda, poses a significant threat to over 90 plant species, causing extensive damage by consuming fresh leaves, hindering growth, and ultimately reducing crop yields. Integrated pest management strategies emphasize eco-friendly approaches, minimizing harm to non-target organisms. Among these, biological control methods, including the use of plant extracts and nanoparticles, have shown considerable efficacy in controlling the fall armyworm. Methods: This study assessed the impact of the neem extract, CuO & ZnO nanoparticle mixtures on the biological aspects of Spodoptera frugiperda. Fourth-instar larvae were exposed to fresh castor leaves treated with neem seed oil extract, obtained through Soxhlet extraction from neem seeds, and nanoparticles prepared via direct precipitation. Results: The estimated LC50 values for neem extract + ZnO were 115 ppm & for neem extract + CuO were 98 ppm, and for ZnO + CuO were 93 ppm, using the second instars. All treatments influenced larval and pupal durations, extending them by 15% and 1% with neem extract + CuO & by 24% and 15% with neem extract + ZnO and by 23% and 33% with ZnO + CuO. Adult longevity also affected negatively by 25,34 and 29% with Neem/CuO, Neem/ZnO and ZnO/ CuO mixtures, respectively. Digestive enzymatic activities in the insects were significantly affected following treatment with the LC-values of all treatments
Mohammad, A. (2024). Screening the Larvicidal activity of ZnO, CuO NPs and neem seed oil extract mixtures against the full armyworm Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae). Al-Azhar Journal of Agricultural Research, (), -. doi: 10.21608/ajar.2024.292138.1355
MLA
Abeer Mahmoud Mohammad. "Screening the Larvicidal activity of ZnO, CuO NPs and neem seed oil extract mixtures against the full armyworm Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae)". Al-Azhar Journal of Agricultural Research, , , 2024, -. doi: 10.21608/ajar.2024.292138.1355
HARVARD
Mohammad, A. (2024). 'Screening the Larvicidal activity of ZnO, CuO NPs and neem seed oil extract mixtures against the full armyworm Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae)', Al-Azhar Journal of Agricultural Research, (), pp. -. doi: 10.21608/ajar.2024.292138.1355
VANCOUVER
Mohammad, A. Screening the Larvicidal activity of ZnO, CuO NPs and neem seed oil extract mixtures against the full armyworm Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae). Al-Azhar Journal of Agricultural Research, 2024; (): -. doi: 10.21608/ajar.2024.292138.1355