Authors :

K. Krishnaveni, L. Sharfun Nisha and M. Muthusamy

Author Address :

*Post Graduate and Research Department of Zoology, Government Arts College, Coimbatore - 641018, Tamil Nadu, India.

Abstract :

The efficacy of the pongam oil and neem gold (commercial product) against the Spodoptera litura  (Fab.) was carried out under the laboratory condition. Based on the present study the pongam oil was more effective which promoted larval mortality from 49.79% to 79.79% with median lethal concentrations (LC₅₀) ranging from 38.74% to 31.83% followed by neem gold (44.59% to 69.79). Data also indicated that the median lethal concentrations were ranging from (LC₅₀) 40.65% to 35.92% on 1st instar to 6th instar larvae of Spodoptera litura. The present investigation reported that the long treatment period (36h) influenced higher level of larval mortality on all larval stages of Spodoptera litura.

Keywords :

Pongam oil, Neem gold, Spodoptera litura and larval mortality