bio-pesticides

Mosquito born diseases are nauseous for human being life and were always a never ending hazard . They have also developed a resistance to this chemical insecticides. Alternatively bio-pesticides are been used. In Indian the Lanata camara , Parthenium hysterophorus are weeds that shows the larvicidal activity along with the Allium sativum linn. The present studies has shown the positive results of larvicidal activity. And the methanol as the choice of extract for the extraction process. Formulation of larvicidal sachets and it’s evaluation were done. Leading to sachets formulation which shown high solubility and stability. With the dose dependent activity and showing the effective measures at low concentrations. Which is economical and ecofriendly less toxic then chemical synthetic pesticides, user - friendly, easy availability. Control and prevention of Mosquito larvaes ,using herbs showing larvicidal activity in sachets formulation.

In this study crude leaf extract of Parthenium, were tested for their larvicidal activity. The different solvents were used namely ethanol, methanol, water (aqueous) for the preparation of crude extracts from the plant leaves. The larval mortality after 24 hours of exposure were observed separately at concentration like 0.2mg, 0.4mg and 1m extract. The different concentration solvent extract of the plants showed good larvicidal activity. The highest potency was recorded by methanol extract of Parthenium. From These results it was observed that the leaf extract of parthenium contain toxic compounds to mosquito larvae and therefore suggest that parthenium extract has potential in the control of the malaria control and prevention of larvae for social health and can be developed and used.