Evaluation of Mycopathogens against the Sweet Potato Weevil Cylas formicarius (F.)

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Authors

  • Department of Entomology, TNGDNAU, Coimbatore-641 003 ,IN
  • Department of Entomology, TNGDNAU, Coimbatore-641 003 ,IN
  • Department of Entomology, TNGDNAU, Coimbatore-641 003 ,IN

DOI:

https://doi.org/10.18311/jbc/1990/15311

Keywords:

Cylas formicarius Mycopathogens, Laboratory Evaluation.

Abstract

The entomopathogenic fungi viz., Beauveria bassiana (Bals.) Vuill., Metarhizium anisopliae (Metsch.) Sorokin var. anisopliae, M. flavoviride Gams & Rozsypal var. minus Rombach, Humber and Roberts., Verticillium lecanii Zimm., Paecilomyces lilacinus (Thom.) Samson., and P. fumosoroseus (Wlze) Brown & Smith were pathogenic to the sweet potato weevil eylas jormicarius (F.), Among these, the first three mycopathogens, listed above, were highly virulent and V. lecanii, P. lilacinus and P. fumosoroseus proved to be weak pathogens against this pest. B. bassiana was the most effective recording the lowest LC50 and LT50 values followed by M. anisopliae and M. flavoviride.