Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 343886
Title Integration of biological control and botanical pesticides : evaluation in a tritrophic context
Author(s) Charleston, D.S.; Dicke, M.; Vet, L.E.M.; Kfir, R.
Source In: Proceedings of the 4th International workshop on the management of diamondback moth and other crucifer pests. Proceedings of the 4th International Workshop, Melbourne, Australia, 1-30 November 2001 Melbourne, Australia : - p. 207 - 216.
Department(s) Laboratory of Entomology
EPS-2
Publication type Contribution in proceedings
Publication year 2001
Abstract The plant kingdom is by far the most efficient producer of chemical compounds, synthesising many products that are used in defence against herbivores. Extracts made from some plants, particularly extracts from plants within the Meliaceae (mahogany) family, have been shown to have insecticidal properties. We investigated the potential of these extracts and the possibility of integrating botanical pesticides with biological control of the diamondback moth, Plutella xylostella. Sub-lethal doses of botanical extracts were prepared from leaves of the syringa tree (Melia azedarach) and commercial preparations (Neemix 4.5®) from the neem tree (Azadirachta indica). In "no-choice" tests, bioassay trays were used to test the impact of three different doses on first- instar larvae. In "choice" tests, half a leaf was treated with extract and the other half left untreated. The impact that these extracts had on natural enemies was investigated using two parasitoid species, Cotesia plutellae and Diadromus collaris. Results indicated that these extracts had a significantly negative impact on first-instar larvae of P. xylostella. However, the extracts had no direct negative impact on their parasitoids. Therefore, it appears that biological control and botanical pesticides can be combined to control P. xylostella.
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