Neem made more effective
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CTA. 1995. Neem made more effective . Spore 56. CTA, Wageningen, The Netherlands.
Permanent link to cite or share this item: http://hdl.handle.net/10568/47035
External link to download this item: http://collections.infocollections.org/ukedu/en/d/Jcta56e/
The leaves and seeds of the neem tree are well known for their insecticidal properties. Scientists in the USA are boosting the toxicity of the active compound so that it will work more effectively. Indian farmers have for centuries used neem...
The leaves and seeds of the neem tree are well known for their insecticidal properties. Scientists in the USA are boosting the toxicity of the active compound so that it will work more effectively. Indian farmers have for centuries used neem products to control pests, and in more recent times the tree has been taken to West Africa. The active ingredient is a compound called azadirachtin, which will either kill insects or stop them feeding on the crop. It works well against a wide range of pests but to be really effective the crushed leaves or seeds have to be applied to the crop every week as the active ingredient does not persist for very long. Researchers in the USA have extracted azadirachtin and put it through a chemical process which involves the addition of hydrogen This makes azadirachtin much more toxic to pests, and more stable in sunlight. Tests show that the altered compound is still active a month after application. Some years ago scientists were able to alter the active ingredient of another natural insecticide, pyrethrum: that work paved the way for the successful pyrethroid insecticides. It is hoped that this technology will be equally successful with neem. AgriDyne Technologies Inc. 2401 South Foolhill Drive Salt Lake City Utah 84109 USA
SubjectsCROP PRODUCTION AND PROTECTION;
- CTA Spore (English)