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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Khaya comprises 4 species in mainland Africa and 1 or 2 endemic to the Comoros and Madagascar. See Terms of Use for details.

Khaya ivorensis (PROTA) – PlantUse English

The combined effects of selection of provenances with genetic resistance and appropriate silvicultural practices could have a substantial positive impact on the damage caused icorensis Hypsipyla robusta stem borers. Mass production of seeds is reported to occur every 3—4 years. Khaya ivorensis is propagated by seed. Khaya ivorensis occurs scattered or in small groups in the forest, usually in low densities. Khaya species strongly resemble each other in flowers and fruits, and differences are most prominent in their leaflets.

It can be found in lowland rainforest that have a short dry season. The seeds are often already attacked by insects while they are still on the tree, and undamaged seeds should therefore be selected before sowing.

Seedlings are planted out when 60—90 cm tall, usually as stumps or striplings. In tropical Africa Khaya ivorensis has been planted successfully in mixed plantations, e. Its bark is durable and is used to make many ivorensos such as furniture and paneling. Once dry, the wood is fairly stable in service. In other projects Wikispecies.

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The bark showed anticonvulsant activity in mice. 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. The wood trade names: At 34 years after planting dominant trees were 76 cm in diameter, but the bole was branchless uvorensis only 12 m.

Tests in rats showed that the bark has dose-dependent anti-inflammatory activity and that it is toxic only at high doses. Khaya ivorensis wood is exported from West African countries in mixed consignments with other Khaya spp.

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.

Extensive lateral growth starts when the upper canopy of the forest has been reached. The proportion ivoensis Khaya ivorensis in these amounts is obscure. Cookies help us deliver our services. Khaya ivorensis is considered one of the most important timber species for plantations, combining fast growth and good timber quality.

In plantations Khaya ivorensis may suffer seriously from Hypsipyla robusta shoot borers that kill the main stem of young trees, causing excessive branching and khyaa to mortality.

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The wood of makore Tieghemella is similar, but more durable. Management under the tropical shelterwood system seems most appropriate. This may be partly due to some genetic resistance against Hypsipyla robusta attack.

IUCN Red List of Threatened Species

Accessed 13 November It grows many white flowers at the end of its branches. The wood is moderately durable and can be susceptible to termite and pinhole borer attacks. In moist evergreen forest Khaya ivorensis can be found flowering and fruiting throughout the year and bearing flowers and fruits at the same time; usually flowering is seasonal, in West Africa being most abundant in June—October.

In Nigeria the average height of saplings was 4. Regular thinning of the shade trees in the first years is needed for good growth of the Khaya ivorensis trees.

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Khaya ivorensis

Ground young shoots and leaves are applied externally ivrensis an anodyne. The wood dust may cause irritation to the skin. 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. Extensive biosystematic studies on Khaya are recommended, covering the whole range of the genus and also considering the ecological requirements.