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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Mar 2013, 34 (2)                                                                                                             Back

nstantaneous and historical temperature effects on a-pinene

Study on larvicidal activity of weed extracts against

Spodoptera litura


Ashokaraj S. Kandagal¹ and Mahadev C. Khetagoudar²*  

¹Department of Zoology, TGP Science College, Jamkhandi-587 301, India

²Pesticide Residue Testing and Quality Analysis Laboratory, University of Agricultural Sciences, Dharwad-580 005, India

*Corresponding Author email :




Publication Data

Paper received:

05 May 2011


Revised received:

29 December 2011



17 March 2012



Larvicidal activity of various concentrations of crude aqueous leaf extracts of E. triplinerve were studied against S. litura following the treatment on fourth instar larvae. The results of the total percent mortality (from fourth instar to adult) demonstrated that the mortality rate progressively increased (41.42, 58.57, 69.80, 84.49, 86.77, 90.55, 91.30, 90.54) as the extract concentrations increased (1, 2, 3, 5, 7.5, 12.5, 15, 17.5%). The maximum of 92 % total mortality was observed at 15 % concentration of the extract. It was significant to note that the percent mortality observed from 5 % onwards was more than 85 %. Results of adult emergence inhibition indicated that the EI50 of E triplinerve was more effective at 4.07 %. Interestingly the calculated EI90 value was 14.10 %. This is an ideal eco-friendly approach for the control of agricultural pest, S. litura.


Key words

Eupatorium triplinerve, Larvicidal activity, Spodoptera litura, Weed extracts, Mortality


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