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Neem products were
found in clay pots in the 5000-year-old Indus
Valley Archaeological site in Northwestern
India by British Archaeologists in 1992.
The medicinal benefits of Neem are also spoken about in the
Veda's - considered to be the world's oldest books. India's
ancient Ayurvedic texts confirm that every part of the Neem
tree has health promoting benefits and the general population
in India has used Neem safely and effectively for over 5000
years.
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Validates the traditional
uses of Neem in the maintenance of general
health, and skin care. On the Indian sub-continent
researchers have found more than 60 medicinal
uses for Neem. Indians know the Neem tree
as a virtual living pharmacy.
It was not until the 1920's that formal research was begun
on Neem trees. It was noted that during periodic locust plagues,
while acres of foliage were stripped bare, Neem were left unscathed.
Simply derived "tea" solutions made from the Neem
seed were effective in protecting foliage crops. Additionally,
several compounds were isolated from the seeds of Neem. One
of these, azadirachtin, was found to both repel and disrupt
the growth and reproduction of many destructive insect species.
Unlike many synthetic insecticides, low dozes of azadirachtin
were found to have little or no mammalian toxicity, and insects
showed little resistance to the compound even through several
generations. The range of insects affected by Neem extracts
is impressive and includes beetles, flies, mosquitoes, caterpillars,
true bugs, locusts and grasshoppers, aphids, weevils, moths,
and roaches.
The major by-product from processing Neem is called "cake." Fields
top-dressed with cake were found to be less affected by nematodes,
snails, and certain fungi. Later tests showed Neem oil to be
very effective on plant diseases like rust and powdery mildew.
Neem cake was also found to be excellent fertilizer, outperforming
farm manure and sewage sludge.
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