What is the persistence of neem the pesticide???

Question

ok neem is used as an insectcide i want to know its persistence (how long it stays in thye environment before breaking down)

Answer 1

This was actually harder to find that I thought it would be! I've looked up half-lives and environmental fates of pesticides before and this one was more tricky...

Anywho, here's what I got!

AZADIRACHTIN = neem by the way! Pesticide breakdown rates vary A LOT based on how much light they are exposed to, whether they're in soil or water or neither.... This gives you a ROUGH idea....

"ENVIRONMENTAL FATE

"Breakdown of Chemical in Soil and Groundwater: Potential for mobility in soil is very low for the formulated product Azatin-EC. Accumulation in the environment is not expected (238).

"Breakdown of Chemical in Surface Water: The formulated product Azatin-EC which contains the active ingredient azadirachtin is considered a water pollutant. It breaks down rapidly (in 100 hours) in water or light, and will not cause long-term effects (238).

"Breakdown of Chemical in Vegetation: Azadirachtin is considered non-phytotoxic when used as directed (232). "

This is a little more technical, and if you are at a university, you can probably get the specific article...

http://www.sciencedirect.com/science?_ob...

Anywho,hope that helps!

Answer 2

probably until the first rain.or after enough dawns

it is organic ,and like anything organic will decompose quickly so

maybe a week .

Nicotine that is used as a tincture in water to get rid of ants works as you apply it .but after a few days or a week it is gone.

Neem would be similar