Entomophaga

, Volume 8, Issue 3, pp 205–212 | Cite as

A comparative study on the effects of aerial versus ground spraying of poisoned baits against the mediterranean fruit fly on the natural enemies of scale insects in citrus groves

  • Z. Avidov
  • D. Rosen
  • U. Gerson
Mémoires Originaux

Summary

Control measures applied against the Mediterranean fruit fly in citrus groves in Israel consist of poisoned — bait sprays containing a protein hydrolysate and malathion. The effects of two methods of application of these materials, namely ground versus air, on the natural enemies of citrus scale insects were studied during 1961–1962. The populations of the California red scaleAonidiella aurantii (Mask.) (in 12 citrus groves) and of the Florida wax scaleCeroplastes floridensisComst. (in 13 groves) were sampled and the rate of parasitation by Hymenoptera was determined. The abundance of the predatorChilocorus bipustulatus (L.) was recorded in all 25 groves.

No significant differences were found between the effects of the two methods of application on the beneficial insects under study.

Keywords

Plant Pathology Control Measure Natural Enemy Malathion Protein Hydrolysate 

Résumé

Les mesures de contrôle appliquées contre la Mouche méditerranéenne dans les plantations d'agrumes en Israel, consistent en pulvérisation d'appâts empoisonnés, contenant hydrolysat de protéine et malathion.

L'action de l'application de ces produits par voie terrestre et aérienne sur les parasites des chenilles d'agrumes a été étudiée en 1961–1962. La population de la chenilleAonidiella aurantii (Mask.) (dans 12 plantations d'agrumes) et celle deCeroplastes floridensisComst. (dans 13 plantations) ont été échantillonnées et le taux de parasitisme par les Hyménoptères a été déterminé.

L'abondance du prédateurChilocorus bipustulatus (L.) a été relevée dans les 25 plantations.

Aucune différence significative n'a été trouvée entre les effets d'application des deux méthodes sur les insectes utiles considérés.

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Copyright information

© Le François 1963

Authors and Affiliations

  • Z. Avidov
    • 1
  • D. Rosen
    • 1
  • U. Gerson
    • 1
  1. 1.Faculty of AgricultureThe Hebrew UniversityRehovotIsrael

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