Vegetable Science
  • Year: 2010
  • Volume: 37
  • Issue: 2

Effect of Chloroform Extracts of Vinca Rosea and Callistemon Lanceolatus on Feeding Behaviour of Helicoverpa Armigera Hub.

  • Author:
  • Jaydeep Halder1, Chitra Srivastava, Swaran Dhingra, Prem Dureja, AB Rai
  • Total Page Count: 3
  • Page Number: 153 to 155

1Indian Institute of Vegetable Research, Varanasi, Uttar Pradesh-221 305

Indian Agricultural Research Institute, Pusa Campus, New Delhi-110 012

Online published on 20 May, 2016.

Abstract

The chloroform extracts of Callistemon lanceolatus and Vinca rosea alone and their different mixtures (viz., 1: 1, 1: 3 and 3: 1) were tested on feedi ng against thi rd instar larvae of Helicoverpa armigera H ub. by leaf dip method under laboratory conditions. The results revealed that, out of these two plants tested highest antifeedant activity was observed after 24 hr in chloroform extract of V. rosea (5270 ppm) followed by C. lanceolatus (5605 ppm). Among the various mixtures tested 3: 1 ratio of both the plants (C. lanceolatus and V. rosea, AI50 = 1216 ppm) showed highest antifeedant activity followed by 1: 1 (3044 ppm) and 1: 3 (5354 ppm).