Efficacy of essential oil of Piper aduncum against nymphs and adults of Diaphorina citri.
Insecticide application is the main way to control Diaphorina citri. However, it causes environmental contamination, has a negative impact on beneficial organisms, and leads to psyllid resistance. The essential oil of Piper aduncum has low toxicity towards the environment and contains dillapiol, which was proven to be effective against several crop pests. Here, we studied its efficacy against nymphs and adults of D. citri under laboratory conditions. Oils with three concentrations of dillapiol (65.2%, 76.6%, and 81.6%) at 0.5%, 0.75%, and 1.0% dilutions plus 0.025% adjuvant were tested. All treatments caused 90?100% mortality in nymphs. Topical treatments with oil containing 76.6% and 81.6% of dillapiol at 0.75% and 1% dilutions were effective (mortality less or equal 80%) in adults. However, the essential oil showed no residual activity against adults (mortality bigger or equal 30%). Because of its high efficacy against nymphs and adults, P. aduncum is a promising botanical insecticide for use in integrated pest management of D. citri.
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Anais e Proceedings de eventos biblioteca |
| Language: | English eng |
| Published: |
2015-11-30
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| Subjects: | Dillapiol, Huanglongbing (HLB), Vectores de insectos, Ninfas (larvas), Insecticidas botánicos, Enfermedades y desórdenes de las plantas, Enfermedad del dragón amarillo, Aceites esenciales, Asian citrus psyllid., Doença de planta, Fruta cítrica, Inseto, Vetor, Inseticida de origem vegetal, Óleo essencial, Ninfa, Plant diseases and disorders, Piper aduncum, Citrus, Candidatus liberibacter, Insect vectors, Diaphorina citri, Nymphs, Greening disease, Botanical insecticides, Essential oils., |
| Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1029916 |
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