Pesticide Research Journal
SCOPUSWeb of Science
  • Year: 2005
  • Volume: 17
  • Issue: 1

Egg Hatching Inhibitory Activity of Azadirachtins A, B and H against Maize Stem borer Chilo partellus (Swinhoe)

  • Author:
  • Subhomay Sinha, Suresh Walia, Jitendra Kumar, VPS Panwar1, BS Parmar
  • Total Page Count: 4
  • Page Number: 6 to 9

#Division of Entomology, Indian Agricultural Research Institute, New Delhi-110012, India.

Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi-110012, India

Online published on 15 October, 2011.

Abstract

Azadirachtin concentrate (20%) and azadirachtin congeners A, B and H showed egg-hatching inhibitory and ovicidal activity against the eggs of the maize stem borer Chilo partellus (Swinhoe). The ovicidal effect was pronounced with azadirachtin H, showing IC50 of 0.001 and 0.012 µg ml−1 at 5 and 7 days after application, respectively. Azadirachtin H also extended the egg-hatching period (T50 17.7 h) significantly over azadirachtin-A 20% concentrate (T50 11.7–12.0 h).

Keywords

Neem, azadirachtins A, B, H, egg-hatching, Chilo partellus