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.

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Attacks of living trees by wood borers Apate spp. Some of these showed significant antifeedant activity in insects, and some antifungal and antibacterial activities.

In tropical Africa Khaya ivorensis has been planted successfully in mixed plantations, e. 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.

Extensive lateral growth starts when the upper canopy of the forest has been reached. The seeds are often already attacked by insects while they are still on the tree, and undamaged seeds should therefore be selected before sowing. Views Read View source View history.

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It grows many white flowers at the end of its branches. Limonoids have been isolated from the bark and seeds. The monoaxial state may persist to a height of 10 m. The proportion of Khaya ivorensis in these amounts is obscure. The bending properties are poor.

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Khaya ivorensis

It turns fairly well. 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.

This may be partly due to some genetic resistance against Hypsipyla robusta attack. Views Read Edit View history. 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. Ground young shoots and leaves are applied externally as an anodyne.

Khaya ivorensis occurs scattered or in small groups in the forest, usually in low densities.

Young trees have a slender stem and a small crown. At 34 years after planting dominant trees were 76 cm in diameter, but the bole was branchless for only 12 m. In ivorensix plantations in Malaysia, mean annual increments of 7. Cookies help us deliver our services.

The boles float in water and thus can be transported by river. Seeds are commonly attacked by seed-boring beetles and eaten by ivorensls rodents. 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. The tree’s bark is bitter and can be used as a natural remedy for coughs and whooping cough.

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Khaya ivorensis is included in the IUCN Red list as a vulnerable species because of habitat loss and degradation, and selective felling. Khaya ivorensis typically grows in drier climates. Once dry, the wood is fairly stable in service.

In moist semi-deciduous forest it may occur together with Khaya anthotheca. The wood is suitable for paper production, and even peeler cores, often regarded as waste, are suitable for pulp production.

It is threatened by habitat loss. In Gabon 4-month-old seedlings have been planted after clear-cutting of the forest, and in other sites ivorebsis removal of the forest undergrowth and thinning of the upper canopy. In southern Cameroon on average 0.

In year-old plantations in Malaysia, a mean annual increment of 1. It belongs to subfamily Swietenoideae and seems most closely related to Carapa and Swietenia.

In ivorebsis projects Wikispecies. It generally air dries and kiln dries easily with little degrade, but some warping may occur due to the presence of interlocked grain. The seeds are best sown in seed beds in the nursery.