Eur. J. Entomol. 90 (2): 239-240, 1993
Effect of crude root oils of Inula racemosa and Saussurea lappa on feeding, survival and development of Spodoptera litura (Lepidoptera: Noctuidae) larvae
- N/A
The crude oils from roots of Inula racemosa Hook. F. and Saussurea lappa Clarke at four concentrations (from 0.625 to 5%) significantly reduced the leaf damage done by Spodoptera litura (Fabricius) larvae. The rate of feeding deterrency measured after treatment with oils of I. racemosa and S. lappa at these concentrations ranged from 20 to 72% and 18 to 62%, respectively. The rate of mortality during larval and prepupal stages was greater than 50% at the 5% concentration. Pupation was adversely affected only at the highest concentration of both oils. Pupal weight was normal, while adult emergence was marginally affected by both oil treatments.
Keywords: Feeding deterrency, plant extracts, Inula racemosa, Saussurea lappa, mortality, Lepidoptera, Spodoptera litura
Accepted: January 20, 1993; Published: June 25, 1993 Show citation
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