Neem (Azadirachta indica) is a tree that belongs to the Meliaceae (Mahogany) family. Originated from southern and southeastern Asia neem is presently worldwide distributed. Neem is a fast-growing tree and can reach 25 meters in height. The leaves can reach up to 40 cm long with a flexible midrib carrying 20-30 leaflets each measuring 3-8cm and attached to the midrib by a short stalk. The flowers are grouped giving green olive-shaped fruits that turn yellow when ripe.
Neem extracts are used in agriculture for pests and disease management and to supply nutrients to plants. In addition, neem is safe for farmers can be used during the entire crop cycle, environmentally safe, and compatible with the different IPM strategies.
Neem compounds act as systemic and as contact poisons for pests: