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Journal of Entomology

Year: 2012 | Volume: 9 | Issue: 6 | Page No.: 332-342
DOI: 10.3923/je.2012.332.342

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Authors


C. Muthu

Country: India

K. Baskar

Country: India

S. Kingsley

Country: India

S. Ignacimuthu

Country: India

Keywords


  • Clerodendrum phlomidis
  • Earias vittella
  • Antifeedant
  • adult emergence
  • larvicidal
  • Flueggea leucopyrus
Research Article

Bioefficacy of Clerodendrum phlomidis Linn. f. and Flueggea leucopyrus (Koen.) Willd. against Earias vittella Fab.

C. Muthu, K. Baskar, S. Kingsley and S. Ignacimuthu
Antifeedant and larvicidal activities of hexane, chloroform and ethyl acetate extracts of Clerodendrum phlomidis and Flueggea leucopyrus at 5, 2.5, 1.0 and 0.5% were studied against III instar larvae of Earias vittella. Hexane extract of F. leucopyrus and chloroform extract of C. phlomidis showed maximum antifeedant activity of 81.00 and 80.48%, respectively at 5% concentration. The least LC50 and LC90 values of 1.21 and 1.36% for hexane extract of F. leucopyrus and 4.96 and 5.11% for chloroform extract of C. phlomidis, respectively. Cent percent larvicidal activity was observed in chloroform extract of C. phlomidis at 5% concentration, while hexane extract of F. leucopyrus recorded at 87.52 and 5% concentration. The LC50 and LC90 values for larvicidal activity ware 0.51 and 1.74% for chloroform extract of C. phlomidis and 1.74 and 4.69% for hexane extract of F. leucopyrus, respectively. No adult emergence was observed at all concentrations of C. phlomidis chloroform extract and at 5 and 2.5% concentrations of F. leucopyrus hexane extract. The chi-square values for both antifeedant and larvicidal activities were significant. The results clearly indicated that chloroform extract of C. phlomidis and hexane extract of F. leucopyrus could be exploited to develop a new pesticidal formulation for eco-friendly pest management.
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How to cite this article

C. Muthu, K. Baskar, S. Kingsley and S. Ignacimuthu, 2012. Bioefficacy of Clerodendrum phlomidis Linn. f. and Flueggea leucopyrus (Koen.) Willd. against Earias vittella Fab. Journal of Entomology, 9: 332-342.

DOI: 10.3923/je.2012.332.342

URL: https://scialert.net/abstract/?doi=je.2012.332.342

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Comments


aiswarya s sreenivas Reply
05 June, 2013

this article is very much useful for my studies

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