Hi
Melia Dubia is the fastest growing tree and the wood from this tree is used in Plywood Industry. 400 trees can be planted in an acre that fetch 15-20 lakhs in 6 - 7years.
MELIA DUBIA cav.
Synonym: Melia composita willd. Family: Miliaceae.
A large tree, attaining a height of 20 m. with a spreading crown and a cylindrical straight bole of 9 m. length X 1.2-1.5 m. girth found in Sikkim Himalayas, North Bengal. Upper Assam, Khasi Hills, hills of Orissa, N.Circas, Deccan and Western Ghats at altitudes of 1500 – 1800 m.
It grows rapidly and is used for reforestation purposes. (Troup, I 186: Burkill, II 1443: Bor, 253) and yields a useful timber.
SITE FACTORS
In its natural habitat the absolute maximum shade temperature varies from 37.5–47.5 C and the absolute minimum from 0–15 C. It does well in moist regions, with a mean annual rainfall exceeding 1000 mm. The mean relative humidity in July varies from 70–90% and in January from 50–80 %.
TOPOGRAPHY
It is commonly found in the hills at elevations ranging from 600 – 1800m.
CULTIVATION
The rooted saplings are planted onset of the monsoon or during the monsoon.
The suggested pit size is 2’ x 2’- 0.60m Cube.
Espacement of 3.5 m x 3.5 m is recommended. This will give better girth in shorter duration.
GROWTH STATISTICS
The growth is rapid. GAMBLES’s specimens gave 8 – 12 rings/dm of radius (mean annual girth increment 5.3 – 8 cm) for a Tamil Nadu specimen, and 28 rings/dm (mean annual girth increment 2.3 cm) for a specimen from Bengal. North Kanara in Karnataka specimen showed 12-16 rings/dm of radius (TALBOT, 1909) giving a mean annual girth increment of 4 –5.3 cm. Trees grown in the Calcutta Botanical gardens from specimen from Malbar origin are said to have reached in 7 years an average height of 14m and a girth of 112 cm at breast height. This rate of growth is equivalent to 4 rings/ dm of radius. Even in comparatively dry regions with a rainfall of 750 – 1000 mm, a height of 3 – 4.5 m is obtained in plantations, against 6-7.5 m in more favourable locations.
UTILISATION
Physical and Mechanical Properties of the Wood
The sapwood is grayish-white, usually with a yellowish cast; the ‘ heartwood ’ is light pink to light red when first exposed, ageing to pale russet brown, subject to grey stain. It is lustrous and without characteristic odour or taste.
It is very light (sp.gr., approximately 0.34, weight at 12 5 moisture content about 336 kg/m3), straight-grained, coarse and somewhat uneven-textured. Annual growth rings are distinct but not conspicuous and number 12-16 / dm of radius.
Regards
Ashwini
