Comparative efficacy of certain plant extracts alone and combination with profenofos againstSpodoptera littoralis(Boisd.) (Lepidoptera: Noctuidae)
| Autor: | Sondos A. Mohamed, Mohamed F. Abd El-Aziz, F. F. Shalaby, Adel A. Hafez |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Toxicological & Environmental Chemistry. 95:778-789 |
| ISSN: | 1029-0486 0277-2248 |
| Popis: | Ethyl alcohol, acetone, and petroleum ether extracts of three plant species belonging to three different botanical families [Strychnos nux-vomica (Loganiaceae), Euphorbia lathyrus (Euphorbiaceae), and Datura stramonlum (Solanaceae)], a chemical insecticide; profenofos and their combinations were tested against second and fourth instars of Spodoptera littoralis under lab conditions. Results revealed that the ethanol extract of S. nux-vomica was the most effective among all plant extracts, where the corrected mortality% were 92, 81, 58, and 27% to 2nd instar and 89, 74, 34, and 11% to 4th instar at concentrations 0.5, 0.25, 0.125, and 0.0625%, respectively. Calculated LC50's were 0.11, 0.22, and 0.34% to 2nd instar and 0.17, 0.37, and 0.52% to 4th instar for ethanol, petroleum ether, and acetone extracts, respectively. Acetone extracts of all plants were of lower effect. The chemical insecticide profenofos displayed higher efficacy than plant extracts (LC50 = 0.002 and 0.003% for S. littoralis 2nd and 4th l... |
| Databáze: | OpenAIRE |
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