TOKSISITAS DAN DAYA HAMBAT EKSTRAK BIJI NIMBA (Azadirachta indica A. Juss) TERHADAP LARVA NYAMUK Aedes aegypti L.

Abstrak

The toxicity  and development inhibition of neem seed extract (Azadiracta indica A.Juss) on the Ae.aegypti larval has been studied. The study has been carried out to find of the toxicity of neem seed extract and the effect on development of Ae.aegypti larval. The toxicity was tested by using bioassay test. Determine of LC₅₀ used by probit analysis. The effect of neem seed extract on development of the Ae.aegypti larval tested by using experiment design was randomized completely design. The result of study showed that LC₅₀ – 24 hours, LC₅₀ – 48 hours, LC₅₀ – 72 hours and LC₁₀₀ – 24 hours value respectively were 62.4 ppm, 38.4 ppm, 28.8 ppm, and 235 ppm. In the sub lethal concentration of neem seed extract was not effect on the Ae.aegypti larval development. The survival rate of the Ae. aegypti larval until the adult emergence 60 percent reduced significantly at 47 ppm of neem seed extract.