Selectivity of Neem Extracts (Azadirachta indica A. Juss.) to the Predatory Mite Iphiseiodes zuluagai (Denmark & Muma) (Acari: Phytoseiidae)
The relative toxicity of the leaf, seed and oil neem cake extracts of Azadirachta indica A. Juss (neem) to the predatory mite Iphiseiodes zuluagai (Denmark & Muma) (Acari: Phytoseiidae) was evaluated. To verify the relative toxicity of these extracts on the predatory mite, discriminating concent...
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| Published in: | Neotropical entomology Vol. 33; no. 5; pp. 613 - 617 |
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| Main Authors: | , , , , , , |
| Format: | Journal Article |
| Language: | Portuguese Spanish |
| Published: |
01-10-2004
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | The relative toxicity of the leaf, seed and oil neem cake extracts of Azadirachta indica A. Juss (neem) to the predatory mite Iphiseiodes zuluagai (Denmark & Muma) (Acari: Phytoseiidae) was evaluated. To verify the relative toxicity of these extracts on the predatory mite, discriminating concentrations of the extracts were determined for adult females of the Oligonychus ilicis (McGregor) (Acari: Tetranychidae), through the method of concentration-mortality. Coffee leaf disks with 3.5 cm of the diameter were put floating on water and impregnated with dry residue of the extracts. Concentrations of neem extracts which caused mortality (99%) of O. ilicis, after 72h of exposition, were 277.4; 520.9 e 10.9 mg/ml for leaf, seed and oil neem cake, respectively. The discriminating concentration of extract of oil neem cake for O. ilicis females was highly toxic to I. zuluagai; while extract of leaf and seed were selective to the predatory mite. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
| ISSN: | 1519-566X |
| DOI: | 10.1590/S1519-566X2004000500011 |