Sharshar, A., Farag, A., El Shamy, E. (2025). Effectiveness of Solanum nigrum Extract and Chlorfenapyr against Spodoptera frugiperda and Tetranychus urticae under Laboratory Conditions. Journal of Plant Protection and Pathology, 16(6), 301-306. doi: 10.21608/jppp.2025.386638.1344
A. H. Sharshar; A. A. Farag; E. A. El Shamy. "Effectiveness of Solanum nigrum Extract and Chlorfenapyr against Spodoptera frugiperda and Tetranychus urticae under Laboratory Conditions". Journal of Plant Protection and Pathology, 16, 6, 2025, 301-306. doi: 10.21608/jppp.2025.386638.1344
Sharshar, A., Farag, A., El Shamy, E. (2025). 'Effectiveness of Solanum nigrum Extract and Chlorfenapyr against Spodoptera frugiperda and Tetranychus urticae under Laboratory Conditions', Journal of Plant Protection and Pathology, 16(6), pp. 301-306. doi: 10.21608/jppp.2025.386638.1344
Sharshar, A., Farag, A., El Shamy, E. Effectiveness of Solanum nigrum Extract and Chlorfenapyr against Spodoptera frugiperda and Tetranychus urticae under Laboratory Conditions. Journal of Plant Protection and Pathology, 2025; 16(6): 301-306. doi: 10.21608/jppp.2025.386638.1344
Effectiveness of Solanum nigrum Extract and Chlorfenapyr against Spodoptera frugiperda and Tetranychus urticae under Laboratory Conditions
1Weed Survey, Ecology and Physiology Department at Sakha station- Weed Research Central Laboratory, ARC. Giza. Egypt.
2Department of Cotton Pesticides Evolution, Plant Protection Research Institute, Agriculture Research Centre, 12619 Giza, Egypt.,
3Department of Agric., Zoology and Nematology, Fac. of Agric., Al-Azhar Univ., Elsadat, Egypt
Abstract
This study evaluated the efficacy of Solanum nigrum aqueous extract and Chlorfenapyr, and their combinations against Spodoptera frugiperda, Smith. (Lepidoptera: Noctuidae) (second and fourth instars) and Tetranychus urticae, Koch. (Acarina: Tetranychidae) (adult) across various developmental stages. Treatments were applied under laboratory conditions. This study was conducted during the summer season of 2024 at the Weed Research Laboratory in collaboration with the Plant Protection Research Institute, Sakha Agricultural Research Station,, Agricultural Research Center (ARC), Egypt. Mortality percentages were recorded post-treatment. The results demonstrated that Chlorfenapyr, whether used alone or in combination with the aqueous extract, significantly increased mortality rates in both pests compared to the extract alone. The highest mortality (up to 100% after 10 days post-treatment) was achieved using the aqueous extract of Solanum nigrum + Chlorfenapyr alone or at the higher combination dose (120 mg/L), particularly during the later assessment intervals. In contrast, the aqueous extract alone exhibited moderate insecticidal activity. Temporal mortality patterns indicated that all treatments achieved their highest efficacy 10 days post-treatment, with effects gradually improving over time, suggesting its potential use as a natural component in pest management strategies. Statistical analyses confirmed significant differences among the treatments. These findings highlight the value of combining botanical extracts with Chlorfenapyr in integrated pest management (IPM) programs, enhancing both efficacy and environmental sustainability.
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