Evaluation Efficiency of some Plant Extracts on Insect Aphis gossypii Glover which Infesting Cucumber Plants under Greenhouses Conditions | ||
| Journal of Plant Protection and Pathology | ||
| Article 8, Volume 9, Issue 10, October 2018, Pages 659-662 PDF (216.64 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jppp.2018.43904 | ||
| Author | ||
| Gamila A. M. Heikal* | ||
| Plant Prot. Res. Inst., Agric. Res. Center, Dokki, Giza, Egypt | ||
| Abstract | ||
| This study was carried out to evaluate the efficiency of some plant extracts against Aphis gossypii Glover under greenhouses conditions on Cucumber var. Cucumis sativus L. during seasons 2015, 2016. The result obtained In season 2015, with regard to the mean number of aphids at 1, 3, 5, 7, 10 and 15 days post treatment, the extracts could be arranged in the following discending order: Neemazal, Azadirachta, Eucalyptus, Nerium, Helianthus, Glycine, Citronella and Jojoba extracts. The general effect of corresponding reduction percentages were 94.66, 93.65, 91.80, 90.60, 88.53, 87.85, 86.87 and 84.36, respectively. Also, data showed that, in season 2016, with regard to the mean number of aphids at 1, 3, 5, 7, 10 and 15 days post treatment, the compounds could be arranged in the following discending order: Neemazal, Azadirachta, Eucalyptus, Nerium, Helianthus, Glycine, Citronella and Jojoba extracts. The general effect of corresponding reduction percentages were 95.16, 94.23, 92.96, 91.63, 89.83, 88.61, 86.13 and 85.83, respectively. From the above-mentioned data, Neemazal proved itself to be the most effective extract and Jojoba oil was the least one. All extracts recorded significant differences between them and control. No phytotoxicity was observed for any of the tested extracts on leaves or on fruits. | ||
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