Insecticidal properties of indigenous verbenaceous products against Henosepilachna vigintioctopunctata on brinjal.

During the present investigation, Henosepilachna vigintioctopunctata adults were treated against different concentration of verbenaceous products viz. leaves of Clerodendron siphonanthus, Lantana camara, Lippia geminate and Vitex negundo. The concentrations were 0.25, 0.50, 0.75, 1.0, 1.5, 2.0, 2.5 and 3.0% (v/v), respectively. The results showed that the H. vigintioctopunctata adults indicated the highest mortality of 73.0 at 3.0% concentration of V. negundo. The mortality decreased in the concentrations of all the verbenaceous extracts. Least mortality response was noted against Lippia geminate and L. camara, which was 4.0 (±1.0).