The butanol fraction of the leaves of Castanospermum australe Cunn. & Fraser., was tested on adult Callosobruchus analis (pulse beetle) for its insecticidal activity by impregnation method at concentration of 3, 9, 48, 240 and 354 μg / cm. The result showed that the extract is toxic to Callosobruchus analis and the LD50 was found to be 38 g/cm . KeywordsCallosobruchus analis, Castanospermum au...
