Three indigenous plant extracts, pithraj, Aphanamixis polystachya, Aroids, Colocasia
esculenta and water hyacinth, Eichhornia crassipes were evaluated for toxicity and repellent
effect on adult beetle, Callosobruchus chinensis L. Aroid was found to be more effective
than other plant extracts. The order of toxicity was aroid>pithraj>water hyacinth. All the
plant extracts were found to be effective as repellent effect on the beetle. Aroid extracts
have strong repellent effects followed by pithraj and water hyacinth. The water extract was
more effective than acetone extracts.
M. Nazrul Islam , M. A. H. Talukder , M. L. Rahman , A. Nasreen , S. M. M. Ali and H. Banu , 2002. Comparative Efficacy of Some Indigenous Plant Materials as Toxicity and Repellent Against
Pulse Beetle, Callosobruchus chinensis L.. Journal of Biological Sciences, 2: 340-342.