Pesticidal activity of Smilax zeylanica L. extracts on Cryptolestes pusillus (Schon.) (Coleoptera: Cucujidae)

MA Bari, W Islam, AR Khan
2011 Journal of Bangladesh Academy of Sciences  
The chloroform and methanolic extracts of Smilax zeylanica L. were assessed for mortality against the adults of flat grain beetle, Cryptolestes pusillus (Schon.) under laboratory conditions by the surface film method. The methanolic extracts caused significantly high (p < 0.001) mortalities than the chloroform extracts. The calculated LD 50 values of the chloroform extracts of S. zeylanica on C. pusillus were 71.20, 67.06 and 62.22 μg/cm 2 for leaf; 14.49, 11.41 and 7.9 μg/cm 2 for stem; and
more » ... 2 for stem; and 6.43, 4.67, 2.40 μg/cm 2 for root extracts. But the LD 50 values of the methanolic extracts were 39.79, 19.39 and 22.06 μg/cm 2 for leaf; 14.27, 12.68 and 10.85 μg/cm 2 for stem; and 12.58, 5.83 and 4.32 μg/cm 2 for root extracts after 24, 48 and 72 hr post-exposure, respectively. Results obtained show the potential of using S. zeylanica extracts for C. pusillus management.
doi:10.3329/jbas.v34i2.6868 fatcat:s5lt43e3kvdqtikgblomeb3bje