Author(s):

Zaidur Rahman Sabuj, Sadequl Islam, Mohammad Abdullah, Dewan Mohammad Badruddoza and Nurul Islam

Abstract: Crude extracts of white mulberry by Petroleum Ether (Pet. ether), Chloroform (CHCl3) and Methanol (CH3OH) were subjected to repellent activity tests against the adults of three stored product pests Callosobruchus chinensis (L.), Sitophilus oryzae (L.) and Tribolium castaneum (Hbst.). The CH₃OH extract of leaves against C. chinensis was found highly repellent at 0.1% level of significance (P<0.001); the Pet. ether extract of leaves against C. chinensis and stem bark extract against T. castaneum; the CHCl₃ extract of stem bark against S. oryzae and T. castaneum showed moderate repellency at 1% level of significance (P<0.01). The Pet. ether extracts of root and stem bark, the CHCl₃ extracts of leaves and stem bark, and the CH₃OH extracts of stem bark against C. chinensis; the CH₃OH extract of leaves and stem bark, the Pet. ether and CHCl₃ extracts of roots against T. castaneum; the CHCl₃ extracts of stem bark against S. oryzae showed mild repellent action at 5% level of significance (P<0.05). However, the CH₃OH extracts of leaves and root didn’t show repellent activity at all.

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