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Journal of Agronomy
  Year: 2002 | Volume: 1 | Issue: 3 | Page No.: 112-115
DOI: 10.3923/ja.2002.112.115
Pesticidal Activity of a Novel Coumestan Derivative Isolated from Psoralea corylifolia Linn. Against Tribolium casteneum Herbst. Adults and Larvae (Coleptera:Tenebrionidae)
N.A. Khatune , M.E. Islam , M.A.A. Rahman , M.A. Baki , G. Sadik and M.E. Haque

Abstract:
The pure compound, 6-(-3-methylbut-2-enyl)-6´-7-dihydroxycoumestan (1) isolated from the chloroform extract of the seeds of Psoralea corylifolia Linn. was evaluated for the pesticidal activity against both adults and different instars of Tribolium casteneum Hebrst. under laboratory conditions. The LD50 values for the compound were 910.34, 620.47, 388.45 and 1159.87, 714.88, 404.26 and 1395.70, 740.75, 493.97 and 1605.34, 835.61, 565.83 and 1652.84, 916.79, 729.50 and 1764.32, 994.16, 784.09 and 1678.52, 992.04, 795.67 and 2350.41, 1395.70, 985.12 ppm for the 1st, 2nd, 3rd, 4th, 5th, 6th, adult male and female, respectively at 24, 48 and 72 h post exposure. These results demonstrated that the earlier instars were more sensitive to the compound than those of late instars those follow to those of individual adults.
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How to cite this article:

N.A. Khatune , M.E. Islam , M.A.A. Rahman , M.A. Baki , G. Sadik and M.E. Haque , 2002. Pesticidal Activity of a Novel Coumestan Derivative Isolated from Psoralea corylifolia Linn. Against Tribolium casteneum Herbst. Adults and Larvae (Coleptera:Tenebrionidae). Journal of Agronomy, 1: 112-115.

DOI: 10.3923/ja.2002.112.115

URL: https://scialert.net/abstract/?doi=ja.2002.112.115

 
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