Bioefficacy of Vinca rosea leaf powder on Aedes aegypti L.

While most of the people consider mosquitoes as an annoyance, these tiny assassins have the potential and lethal capacity more than any other group of arthropods. The increasing resistance of mosquitoes to current commercial insecticides has made the problem still worst. An alternative conventional method for this is the utilization of natural products from plants. In this regard shade dried leaf powder of Vinca rosea were used to assess the bioefficacy on Aedes aegypti. The different sized particle powder of 150μ, 250μ, 500μ and 600μ were tested for their bioefficacy. Emergence inhibition (EI 50 ) of 150μ particle sized powder was found to be most effective with the (EI 50 ) of 24.81mg/100ml of water. Growth inhibitory effect was observed during the development.