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Phytoparasitica

, Volume 34, Issue 4, pp 401–404 | Cite as

Note: Toxicity of some insecticides onBracon hebetor under laboratory conditions

  • Sohail Ahmed
  • Maqsood Ahmad
Entomology

Abstract

Insecticides which were environmentally friendly and the least toxic, were screened against a laboratory strain ofBracon hebetor (Say) (Hymenoptera: Braconidae) for their suitability for release in IPM of cotton. Concentrations ranging from 1 to 1000 ppm of the formulated insecticides in acetone were applied in glass vials and also by a leaf method, whereby cotton leaves were dipped in aqueous solutions of the same concentrations of insecticides. Adult parasitoids were exposed in both methods. According to the LC50 at 24 h exposure, Λ-cyhalothrin and spinosad were the most (7 and 5 ppm) and least (263 and 225 ppm) toxic in the vial and the leaf method, respectively, toB. hebetor. The possible use of the parasitoid for IPM of cotton is discussed.

Key words

Bracon hebetor IPM cotton endosulfan triazophos chlorpyrifos Λ-cyhalothrin cypermethrin spinosad emamectin benzoate indoxacarb azadirachtin 

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Copyright information

© Springer Science + Business Media B.V. 2006

Authors and Affiliations

  1. 1.Dept. of Agricultural EntomologyUniversity of AgricultureFaisalabadPakistan

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