Generally, the pongam oil is critical for antifeedance, repellence or deterrence for pest species. For example, extracts from seeds of P. pinnata showed an antifeedant effect on Diacrisia obliqua Walker (Chakraborty & Roy 1988; Mohanty et al. 1988), Scelodonata strigicollis Mots. (Durairaj et al. 1991), Spodoptera litura F. and Tribolium castaneum Herbst (Prakash & Rao 1986) and Trialeurodes vaporariorum (Pavela 2008). Repellent and antifeedant effects are often connected with pest reduction or oviposition deterrence effect (Deka et al. 1998, Pavela & Herda 2007a,b). Moreover, P. pinnata seed oil shows significant fungicide effects (Kumar & Kalidhar 2003).