The tree is widely exploited for its very valuable timber, which is traded internationally, and plantations have been established in several countries. A high. Identity. Top of page. Preferred Scientific Name. Khaya ivorensis A. Chev. Preferred Common Name. African mahogany. International Common. Khaya ivorensis is distributed from Côte d’Ivoire east to Cameroon and south to Cabinda (Angola); it possibly also occurs in Guinea, Liberia.
|Published (Last):||26 June 2008|
|PDF File Size:||17.43 Mb|
|ePub File Size:||16.70 Mb|
|Price:||Free* [*Free Regsitration Required]|
The rates of shrinkage are moderate, from green to oven dry 2. In mixed plantations the average bole diameter was 39 cm at 27 years after planting, with dominant trees being 28 m tall and 47 cm in diameter. Later it was planted in lines as enrichment of degraded forests, mixed with other species, at a distance of 7—25 m between lines and 3—7 m within the line, and some trees showed an annual diameter growth of over 2. Realistic rotation cycles in natural forest are probably in the range of 60—80 years.
The heartwood is strongly resistant to impregnation, the sapwood moderately resistant. Ground young shoots and leaves are applied externally as an anodyne. It is threatened by habitat loss. Cookies help us deliver our services. Khaya ivorensis is most abundant in evergreen forest, but can also be found in moist semi-deciduous forest, in areas with — mm annual rainfall and a dry season of 2—3 months, up to m altitude. The integration of Khaya ivorensis in agroforestry systems, as is already the case in cocoa based systems in Nigeria, can be considered economically and technically feasible and an ecologically sound strategy.
It grows many white flowers at the end of its branches. The wood is suitable for paper production, and even peeler cores, often regarded as waste, are suitable for pulp production.
At 34 years after planting dominant trees were 76 cm in diameter, but the bole was branchless for only 12 m. Mass production of seeds is reported to occur every 3—4 years. Seeds can germinate in full sun as well as in the shade, but natural regeneration is apparently sparse in large gaps. It prefers alluvial soils which are moist but well-drained, but it can also be found on slopes on lateritic soils. The combined effects of selection of provenances with genetic resistance and appropriate silvicultural practices could have a substantial positive impact on the damage caused by Hypsipyla robusta stem borers.
The wood is in demand for making backs or sides of acoustic guitars as it is considered to have good acoustical characteristics. Attacks of living trees by wood borers Apate spp. Limonoids have been isolated from the bark and seeds. ivoremsis
Khaya ivorensis – Wikipedia
The wood can be finished ivodensis a smooth surface, but the use of a filler is required in staining and varnishing. The wood of both species and that of Khaya grandifoliola C. Young trees have a slender stem and a small crown.
In other projects Wikispecies. A bark concoction is used as a drink or bath for back pains and as a lotion for rheumatism. Seedlings can survive in dense shade, but for good growth opening of the forest canopy is needed.
It is also used as fuelwood and for charcoal production.
Some find that when mixed with black peppercorns it can beused to treat diarrhea and dysentery. The high buttresses at the base of the bole often necessitate the construction of ivorensiw platform before felling can take place, or the removal of the buttresses before felling to recover more timber.
It grows in groups or singly.
The proportion of Khaya ivorensis in these amounts is obscure. The seed weight is — g. This may be partly due to some genetic resistance against Hypsipyla robusta attack.
ivorennsis It is more or less distinctly demarcated from the creamy white, up to 5 cm wide sapwood. March Learn how and when to remove this template message. In Nigeria Khaya ivorensis trees are locally retained in cocoa plantations to serve as shade trees and ultimately for timber production. Khaya ivorensis is considered one of the most important timber species for plantations, combining fast growth and good timber quality.
This page was last edited on 29 Marchat The monoaxial state may persist to a height of 10 m. Views Read View source View history.
Tests in rats showed that the bark has dose-dependent anti-inflammatory activity and that it is toxic only at high doses. It is suitable for light construction, light flooring, ship building, vehicle bodies, handles, ladders, sporting goods, musical instruments, toys, novelties, precision equipment, carving, turnery and pulpwood.
Planting the tree improves and enriches the soil, so many people use the tree for that as well. Natural regeneration of Khaya ivorensis after logging is often poor due to the often low density of mature trees in the forest and low regeneration rates in heavily disturbed forest.
In recent years, the United States market has dominated the international trade in Khaya timber, especially as iovrensis substitute for American mahogany from Swieteniathe availability of which has declined considerably.
Khaya ivorensis also called African mahogany or Lagos mahogany is ,haya tall forest tree with a buttressed trunk in the family Meliaceae. In year-old plantations in Malaysia, a mean annual increment ivorrensis 1.
Khaya ivorensis is a species in the African mahogany family.