South African carnation tortrix: biology, natural enemies and biological control trials

Bertaux, F.; Franceschini, C.; Tabone, E.

Phytoma (Paris) 572: 38-41


ISSN/ISBN: 0048-4091
Accession: 004323547

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Trials were initiated in France during 1998 by a team consisting of representatives of the Chamber of Agriculture, the Regional Plant Protection committee and the National Agronomic Research Institute within the framework of an Astredhor programme. In this programme, the possibility of using trichograms (Trichogramma spp.) as control agents of the South African carnation tortrix, Epichoristodes acerbella, was evaluated. A strain of T. dendrolimi (strain V) was the most effective, but trichogramms are insufficient. A related study carried out in 2000 involved the collection of indigenous beneficials, most notably T. voegelei and T. cacaeciae. In a greenhouse test carried out in 2001, T. voegelei (strain O) and T. dendrolimi (strain V) produced better results in terms of average parasitism levels, proportions of parasite affected eggs, and dispersion capability (for which there were significant differences compared to the other strains). T. voegelei produced average results, but T. voegelei was only as effective as T. dendrolimi.