Dr. Salman Ahmed

Insecticidal activity of castanospermum australe against stored grain pest callosobruchus analis

• Authors Details :  
• Zafar Alam Mahmood,  
• Salman Ahmed,  
• Syed Waseemuddin Ahmed ,  
• Muhammad Mohtasheemul Hasan

325 Views Original Article

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 concentrations of 3, 9, 48, 240 and 354 μg / cm2. The result showed that the extract is toxic to Callosobruchus analis and the LD50 was found to be 38 µg/cm2. The insecticidal activity of the butanol fraction of Castanospermum australe leaves against adult Callosobruchus analis was determined by impregnation method in five different concentrations and the result so obtained revealed that the extract is toxic against the test insect (pulse beetle). The mortality was lowest (14 %) at 3 µg/cm2 and highest (96 %) at 354 µg/cm2 (Table). The LD50 by log-log graph was found to be 38 µg/cm2. It may be said that the saponins of this plant could be utilized as a natural insecticide that could be an effective alternative for insect pest management.

Article Subject Details

• Biological Sciences
• Pharmaceutical chemistry
• Pharmaceutical sciences
• Pharmacognosy
• Pharmacology and toxicology
• Pharmacy

Article Keywords Details

• Agriculture
• Callosobruchus analis
• Castanospermum australe
• Grain pest
• Pharmacognosy
• Saponins

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