KHAYA IVORENSIS PDF
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):||10 September 2015|
|PDF File Size:||5.87 Mb|
|ePub File Size:||8.22 Mb|
|Price:||Free* [*Free Regsitration Required]|
This page was last edited on 29 Marchat The wood holds nails and screws ivornsis and glues satisfactorily. A bark concoction is used as a drink or bath for back pains and as a lotion for rheumatism.
More research is needed on appropriate management systems in natural forest to ensure a sustainable exploitation. It is also used as fuelwood and for charcoal production.
Trees are sometimes leafless for a short period at the beginning of the dry season. In other projects Wikispecies.
Seeds are commonly attacked by seed-boring beetles and eaten by small rodents. The tree’s bark is bitter and can be used as a natural remedy for coughs and whooping cough. March Learn how and when to remove this template message.
Khaya ivorensis typically grows in drier climates. Some of these showed significant antifeedant activity in insects, and some antifungal and antibacterial activities. In recent years, the United States market has dominated the international trade in Khaya timber, especially as a substitute for American mahogany from Swieteniathe availability of which has declined considerably. Tests in rats showed that the bark has dose-dependent anti-inflammatory activity and that it is toxic only at high doses.
At 34 years after planting dominant trees were 76 cm in diameter, but the bole was branchless for only 12 m. Seedlings are planted out when 60—90 ivorenzis tall, usually as stumps or striplings. Extensive biosystematic uvorensis on Khaya are recommended, covering the whole range of the genus and also considering the ecological requirements.
Trees of 30 years old may produce fruits and seeds abundantly.
The combined effects of selection of provenances with genetic resistance and appropriate silvicultural practices could have khaa substantial positive impact on the damage ivorenais by Hypsipyla robusta stem borers.
This page was last modified on 20 Decemberat The high buttresses at the base of the bole often necessitate the construction of a platform before felling can take place, or the removal of the buttresses before felling to recover more timber.
Khaya species strongly resemble each other in flowers and fruits, and differences are most prominent in their leaflets. Its bark is durable and is used to make many things such as furniture and paneling. Provenance trials in Ghana showed a fairly high heritability for height growth, with the growth of the highest-ranking progenies being nearly twice that of the lowest-ranking ones. Regular thinning of the shade trees in the first years is needed for good growth of the Khaya ivorensis trees.
The heartwood is pale pinkish brown to pale red, darkening to deep brown with a golden lustre upon exposure. The wood of both species and that of Khaya grandifoliola C.
IUCN Red List of Threatened Species
The wood of makore Tieghemella is similar, but more durable. The proportion of Khaya ivorensis in these amounts is obscure. There appears to be a more or less gradual transition in species according to ecological gradients, from the moist evergreen forest zone through semi-deciduous forest to the savanna zone. The sapwood is often removed soon after felling to prevent attacks by ambrosia beetles. It generally air dries and kiln dries easily with little degrade, but some warping may occur due to the presence of interlocked grain.
It is more or less distinctly demarcated from the creamy white, up to 5 cm wide sapwood.
It grows to be about 40—50 m high. The seeds are best sown in seed beds in the nursery. Limonoids have been isolated from the bark and seeds. Smoke from the wood showed good results in tests of smoking fish, protecting the fish effectively against fungi. It does not have many demands to survive because it can tolerate some shade and short periods of flood during rainy seasons.
Extensive lateral growth starts when the upper canopy of the forest has been reached. The wood dust may cause irritation to the skin. Retrieved from ” https: The boles float in water and thus can be transported by river. Some find that when mixed with black peppercorns it can beused to treat diarrhea and dysentery.