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.
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The boles of Khaya ivorensis trees are occasionally so large that they cannot be sawn with normal equipment. More recently it has been ivoreniss successfully in khayz rows to mark the boundary of forestry reserves. 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. The wood is moderately durable and can be susceptible to termite and pinhole borer attacks.
It grows in groups or singly. Khaya ivorensis often occurs along watercourses. Regeneration of Khaya ivorensis is not promoted by large disturbances in the forest, but it benefits from small gaps. In Nigeria the average height of saplings was 4. The wood is usually fairly easy to saw and work, although the presence of interlocked grain may cause some difficulties. It can be found in lowland rainforest that have a short dry season.
The wood dust may cause irritation to the skin.
Regular thinning of the shade trees in the first years is needed for good growth of the Khaya ivorensis trees. Please help to improve this article by introducing more precise citations. The seeds are best sown in seed beds in the nursery.
The wood of Khaya anthotheca is very similar to that of Khaya ivorensis. In other projects Wikispecies.
The seed weight is — g. Fruits mature in about 6 months. Khaya ivorensis typically grows in drier climates.
In Gabon 4-month-old seedlings ivorensiss been planted after clear-cutting of the forest, and in other sites after removal of the forest undergrowth and thinning of the upper canopy. Khaya ivorensis is included in the IUCN Red list as a vulnerable species because of habitat loss and degradation, and selective felling. The rates of shrinkage are moderate, from green to oven dry 2.
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.
The bitter-tasting bark is widely used in ivorensjs medicine. Realistic rotation cycles in natural forest are probably in the range of 60—80 years.
More extensive establishment of plantations of Khaya ivorensis is certainly desirable in tropical Africa, but Hypsipyla attack is a serious drawback. Planting the tree improves and enriches the soil, so many people use the tree for that as well. Extensive lateral growth starts when the upper canopy of the forest has been reached. It has thick and reddish brown bark.
The integration of Khaya ivorensis in agroforestry systems, as is already the case in ivorensiss based systems in Nigeria, can be considered economically and technically feasible and an ecologically sound strategy. Extensive biosystematic studies on Khaya ivoensis recommended, covering the whole range of the genus and also considering the ecological requirements. Traditionally, the wood is used for dugout canoes. In year-old plantations in Malaysia, a mean annual increment of 1.
Silvicultural techniques such as overhead shading of saplings, mixed planting and removal of lateral shoots can reduce damage by shoot borers. The bending properties are poor. The high buttresses at the base of ivoernsis 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 ivorensis (PROTA) – PlantUse English
In plantations Khaya ivorensis may suffer seriously from Hypsipyla robusta shoot borers that kill the main stem of young trees, causing excessive branching and contributing to mortality. At 34 years after planting dominant trees were 76 cm in diameter, but the bole was branchless for only 12 m.
Smoke from the wood showed good results in tests of smoking fish, protecting the fish effectively against fungi. Some find that when mixed with black peppercorns it can beused to treat diarrhea and dysentery.
Articles lacking in-text citations from March All articles lacking in-text citations Articles with ‘species’ microformats Taxonomy articles created by Polbot. Seeds are commonly attacked by seed-boring beetles and eaten by small rodents. The grain is straight or interlocked, texture rather coarse. The application of 0.