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Utilisation ofTrichogramma cacoeciae march. Hym. Trichogrammatidae in control of the plum mothLep. Tortricidae depending on the numbers used and time of introduction

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Résumé

L'auteur a étudié l'effet des lâchers deTrichogramma cacoeciae en nombres différents sur 8 parcelles de 100 arbres chacune. En outre, 2 parcelles supplémentaires ont été choisies dans lesquelles 500 000 spécimens de Trichogrammes ont été introduits respectivement une semaine et deux semaines plus tard. Les résultats sont montrés par les figures 2, 3. Même la diminution par 20 du nombre des Trichogrammes libérés affecte à un faible degré seulement, la réduction du pourcentage d'infestation des fruits (fig. 2). La figure 3 montre clairement combien il est important que le Trichogramme soit introduit au moment favorable de la biologie du ravageur.

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References

  1. Wiackowski, S. &Kot, K.—1961. Preliminary investigations on biological control ofLaspeyresia funebrana Tr. [Lepidoptera, Tortricidae] by means of the egg parasiteTrichogramma cacoeciae March. [Hymenoptera, Trichogrammatidae].—Zeszyty Problemowe Postepow Nauk Rolniczych,35, 167–175.

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Authors
  1. Irena Wiackowska
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Wiackowska, I. Utilisation ofTrichogramma cacoeciae march. Hym. Trichogrammatidae in control of the plum mothLep. Tortricidae depending on the numbers used and time of introduction. Entomophaga 10, 151–157 (1965). https://doi.org/10.1007/BF02385290

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  • DOI: https://doi.org/10.1007/BF02385290

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