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Some tree paints, depending on ingredients, also protect against insects and rodents. For example, neem oil has been used by Indian farmers for thousands of years as a natural insect repellent and insecticide. A diluted neem oil spray repels insects and smothers those that come into contact with it, ultimately killing most insects that ingest ...
Azadirachta indica, commonly known as neem, margosa, nimtree or Indian lilac, [3] is a tree in the mahogany family Meliaceae. It is one of the two species in the genus Azadirachta . It is native to the Indian subcontinent and to parts of Southeast Asia , but is naturalized and grown around the world in tropical and subtropical areas.
Formulations that include neem oil have found wide usage as a biopesticide for horticulturists [4] and for organic farming, as it repels a wide variety of insect pests including mealy bugs, beet armyworms, aphids, cabbage worms, thrips, whiteflies, mites, fungus gnats, beetles, moth larvae, mushroom flies, leaf miners, caterpillars, locusts, nematodes and Japanese beetles.
Azadirachta is a genus of two species of trees in the mahogany family Meliaceae. [2] Numerous species have been proposed for the genus but only two are currently recognized, Azadirachta excelsa and the economically important tree Azadirachta indica, the neem tree, from which neem oil is extracted.
They have been used in companion planting as pest control in agricultural and garden situations, and in households. Certain plants have shown effectiveness as topical repellents for haematophagous insects, such as the use of lemon eucalyptus in PMD, but incomplete research and misunderstood applications can produce variable results. [1]
Nimbin can be quantified in neem using advanced mass spectrometry [15] or HPLC techniques. [16] The concentration of this chemical in the plant (among other chemicals) can be impacted by various factors such as the different parts of the tree in which they can be found or tree age. [15] Nimbin can be found in neem leaves, seeds and bark.
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