BIOLOGICAL EFFECTS OF A PLANT EXTRACT ON GRAM POD BORER

BIOLOGICAL EFFECTS OF A PLANT EXTRACT ON GRAM POD BORER, HELICOVERPA ARMIGERA (HÜBNER) (LEPIDOPTERA: NOCTUIDAE)

M. Singh*, J. H. Naik, H. Pande and B. R. Kaushal
Depatment of Zoology, D.S.B. Campus, Kumaun University, Nainital- 263002, India
[Corresponding author* : manishamisthi2@gmail.com]

Received:28-04-2019                                             Received:05-05-2019                          Accepted: 05-06-2019
In the present study, Methanol extract of Lantana camara L. were tested for antifeedant, toxicity effects and Gonado-Somatic Indices against Helicoverpa armigera (Hübner). Antifeedent index increased with increasing concentration of methanol extract. At 5 % concentration, AFI was 72.32 % in the 3rd instar larvae and 28.66 % in the 4th instar larvae. 100 % mortality of larval stages was observed with increase in concentration of dose and application time. A decrease in overall body weight, weight of testes and ovaries, Female Fecundity Index (FFI) and Male Fecundity index (MFI) was also observed in methanol extract treated adults of H. armigera in comparison to control group.
Key words: Helicoverpa armigera, plant extract, Lantana camara, antifeedant, toxicity, Gonadosomatic Indices

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