Acacia nilotica Linn.

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Acacia nilotica Linn. Family

Leguminosae

Acacia nilotica Linn. English Name

Arabic Tree

Acacia nilotica Linn. Local Name

Babul

Acacia nilotica Linn.

Acacia nilotica Linn. Description

An evergreen, thorny, moderate-size tree, 20 m tall. Diameters up to 1 m have been recorded. Leaves are compound, 2.5 to 7.5 cm long. The crown form varies from conical to spreading. The flowers are fragrant, yellow to bright yellow growing in bunches and mature year around depending on sub-species and geographic location. The pods are variable 4 to 22 cm long, and also mature year around depending on sub-species and geographic location. It is easily reproduced from seed. Pre-treatment of seed with boiling water increases germination. It is relatively fast growing and will yield 4 to 15 m3/ha/yr in 20 years. Average height and diameter for 20 years old tree is 10 m and 15.7 cm respectively. It is relatively fast growing and will yield 4 to 15 m3/ha/yr in 20 years. Average height and diameter for 20 years old tree is 10 m and 15.7 cm respectively. Sapwood is Close grained, white, heartwood is pinkish white turning to reddish brown. Having specific gravity of 0.75 and a calorific value of 4900 kcal/kg.

Acacia nilotica Linn.

Acacia nilotica Linn. Distribution

This tree is native to Pakistan and is found in the Sindh, Punjab, Balochistan and NWFP. It is wild as well as extensively cultivated throughout the world, usually below 600 m in elevation. An intolerant, drought resistant tree that grows on a variety of sites. It will tolerate saline, sodic sites if adequate soil moisture is available. It requires precipitation of 125 to 1300 mm/yr. It prefers a semi-arid, sub-tropical/tropical climate within a temperature range of 1 to 45°C. It exhibits distinct differences between sub-species as to frost hardiness and drought resistance.

Acacia nilotica Linn.

Acacia nilotica Linn. Uses

This valuable tree is adapted to a variety of arid sites. Wood is durable, heavy, hard and very strong. It is aggressive and is easily established. It is important in the central and southern regions of Pakistan and its wood is valued for fuel and charcoal. Young trees need protection from grazing. It has great potential as a farm forestry tree. It is useful for controlling erosion in gullied areas and also can be grown on saline, sodic sites for soil reclamation and biomass production. Can be also used as fodder, fuel and charcoal, agricultural implements, pit props, apiculture, gum, lac production, tannin, fencing, land stabilization, nitrogen fixing, and medicinal (bark for diarrhoea and dysentery).

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