Laboratory Evaluation of Commercial Neem Formulations Vis-a-Vis Insecticides against Egg Parasitoid, Trichogramma japonicum Ashmead (Hymonoptera:Trichogrammatidae)

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Authors

  • Directorate of Rice Research, Rajendranagar, Hyderabad 500030, Andhra Pradesh ,IN
  • Directorate of Rice Research, Rajendranagar, Hyderabad 500030, Andhra Pradesh ,IN
  • Directorate of Rice Research, Rajendranagar, Hyderabad 500030, Andhra Pradesh ,IN
  • Directorate of Rice Research, Rajendranagar, Hyderabad 500030, Andhra Pradesh ,IN

DOI:

https://doi.org/10.18311/jbc/1997/7573

Keywords:

Egg Parasitoid, Insecticides, Neem Formulations, Trichogramma japonicum.

Abstract

Laboratory experiments were carried out to study the effect of neem formulations vis-a-vis insecticides on Trichogramma japonicum Ashmead, based on rate of parasitization and emergence of adults from parasitised eggs. The results revealed that Econeem and Neem Azal T/S (0.1-1.0 %) were safer compared to insecticides, particularly quinalphos and chlorpyriphos which had adverse effects on parasitization. Some neem formulations like Nimbecidine (0.25-4.0 %), Neemgold (2.0-4.0 %) and Rakshak (1.0%) also had adverse effects on parasitism.