Question

 What is the substance in neem tree that is used as an insecticide?

Answer The active constituent in the Neem plant is Azadirachtin. It is an anti-feedant, repellent and insecticide.
http://wiki.answers.com/Q/What_is_the_substance_in_neem_tree_that_is_used_as_an_insecti...

Top Q&A For: What is the substance in neem tree that is used...

Neem tree has many uses.Have you ever used neem tree twigs for brushing your teeth?

Neem is an extremely useful tree. From roots to flowers every part of the tree is useful . It has not become as popular as it ought to be because for westerners synthesizing individual chemicals i... Read More »
http://answers.yahoo.com/question/index?qid=20100720052619AA0V0f8

Is Neem a synthetic insecticide?

Neem oil is not a synthetic chemical. It is extracted from the seeds of the Neem tree, a tropical evergreen that is native to India and found in other Southeast Asian and African countries. It is u... Read More »
http://www.answerbag.com/q_view/2165824

Is it safe to mix neem oil with tea tree oil?

Can an insecticide make a pear tree turn black?

Insecticides are not known to cause a pear tree to turn black. If this has occurred, it is most likely due to a disease known as Fire Blight, which will need to be treated with a chemical fungicide... Read More »
http://www.answerbag.com/q_view/2246828


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