Screening for the efficacy of botanicals and soaps in controlling the Banana Aphid Pentalonia nigronervosa (Hemiptera: Aphididae) under laboratory and screenhouse conditions

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dc.creatorOgwal, Geofrey
dc.creatorPeter Wasswa
dc.creatorOcimati, Walter
dc.creatorOmondi, Bonaventure Aman
dc.creatorTazuba, Anthony Fredrick
dc.creatorOtim, Michael Hilary
dc.creatorBlomme, Guy
dc.date2026
dc.date2025-12-27T15:51:14Z
dc.date2025-12-27T15:51:14Z
dc.date.accessioned2026-06-27T13:28:08Z
dc.descriptionControlling banana aphid (Pentalonia nigronervosa) vectors of banana bunchy-top disease is crucial for integrated disease management. Synthetic insecticides, though effective in aphid control, pose health and environmental risks. Biorational pesticides (including botanicals and soaps) are safer alternatives. This study screened four fresh and fermented aqueous plant extracts (chili pepper, garlic, neem, and peppermint) and three soaps (bathing, laundry bar, and liquid soap) singly or in mixtures against banana aphids through in vitro and in vivo experiments. Aphid-inoculated banana leaf-blade disks were used for the in vitro studies over 96 h. Potted plantlets were used for the in vivo studies over eight weeks. Applying these preparations resulted in significant (p ≤ 0.05) aphid mortality (28.6 to 100%) compared to the water control (3.3%) at 96 h post-spray (hps). In vitro, a single application of nimbecidine® (Azadirachtin 0.03%), garlic, chili-pepper botanicals, insecticidal, and bathing soap caused >50% mortality at 96 hps. Mixed applications of chili pepper, garlic-based, and neem botanicals with soap caused >70% mortality at 96 hps in vitro. Binary mixtures of neem oil, garlic, fermented garlic, or fermented peppermint with insecticidal soap, and neem oil with bar soap, were promising in vivo, reducing the aphid populations to 200 aphids after week 8. However, these potential preparations incurred a higher cost (USD 1.30/banana mat) compared to the synthetic pesticide (USD 0.022/mat). Thus, biorational mixtures have a potential to effectively control banana aphids.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/179299
dc.identifier.urihttp://hdl.handle.net/123456789/60355
dc.languageen
dc.publisherMDPI
dc.rightsOpen Access
dc.sourceOgwal, G.; Peter Wasswa; Ocimati, W.; Omondi, B.A.; Tazuba, A.F.; Otim, M.H.; Blomme, G. (2026) Screening for the efficacy of botanicals and soaps in controlling the Banana Aphid Pentalonia nigronervosa (Hemiptera: Aphididae) under laboratory and screenhouse conditions. Insects 17(1): 23. ISSN: 2075-4450
dc.subjectbananas
dc.subjectbanana bunchy top virus
dc.subjectbanana bunchy top
dc.subjectpentalonia nigronervosa
dc.subjectbotanical insecticides
dc.subjectsoaps
dc.titleScreening for the efficacy of botanicals and soaps in controlling the Banana Aphid Pentalonia nigronervosa (Hemiptera: Aphididae) under laboratory and screenhouse conditions
dc.typeJournal Article

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