Journal of Applied and Natural Science 7 (1): 417–424 (2015)
Comparative study of medicinal plants on feeding behaviour of seven day old larvae of Tobacco caterpillar, Spodoptera litura (Fab.) and Bihar hairy caterpillar, Spilarctia obliqua (Walk.)
Preeti Sharma, Neeta Gaur and Renu Pandey
College of Agriculture, G.B. Pant University of Agriculture and Technology, Pantnagar-263145 (Uttarakhand), INDIA
*Corresponding author, E-mail: Preetisharmaentomology@gmail.com
Abstract : Eight medicinal plants viz., Sinduri, Bixa orellana (Bixaceae); Dalchini, Cinnamomum zeyanicum (Lauraceae);
Camphora, Cinnamomum camphora (Lauraceae); Gular, Ficus racemosa (Moraceae); Arjun, Terminalia arjuna (Combretaceae); Nagkesar,
Messua ferrea (Calophyllaceae); Sarpgandha, Rauwolfia serpentina (Apocynaceae); Putranjeeva, Putranjeeva roxburghii (Euphorbiaceae)
at 5% and 10 % concentrations were tested for the feeding against larvae of Spodoptera litura and Spilarctia obliqua. At 10% conc.
C.camphora (hexane, diethyl ether, and acetone) was found extremely antifeedant against the larvae of both insects (S.litura and S.obliqua)
while C.zeylanicum (hexane, diethyl ether, and acetone) and P.roxbughii (diethyl ether, and acetone), B.orellana (Acetone) showed
extremely antifeedant activity only against the larvae of S.litura. At 5% concentration, the same plants were also effective against
the larvae but their efficacy was less than at 10% concentration. The observation showed promising results with these plant extracts
against the feeding and management of these two insect pests of agricultural importance.
Keywords :Antifeedant, feeding behaviour, medicinal plants, Spodoptera litura and Spilarctia obliqua