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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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They are susceptible to attack by longhorn beetles and should be processed not too long after felling. In year-old plantations in Malaysia, a mean annual increment of 1. Realistic rotation cycles in natural forest are probably khayw the range of 60—80 years. Later it was planted in lines as enrichment of degraded ivoreensis, 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.

IUCN Red List of Threatened Species

Retrieved from ” https: Management under the tropical shelterwood system seems most appropriate. The wood is usually fairly easy to saw and work, although the presence of interlocked grain may cause some difficulties.

Extensive lateral growth starts when the upper canopy of the forest has been reached. See Terms of Use for details. From Wikipedia, the free encyclopedia.

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More recently it has been planted successfully in 3 rows to mark the boundary of forestry reserves. 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 ohaya to recover more timber.

In a year-old plantation in Malaysia, trees had an average height of In 26—year-old plantations in Malaysia, mean annual increments of 7. The boles of Khaya ivorensis trees are occasionally so large that they cannot be sawn with normal equipment.

It does not have khaay demands to survive because it can tolerate some shade and short periods of flood during rainy seasons. Average heights were 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.

Khaya ivorensis

It is fairly widely grown in plantations within its natural area of distribution, ivorensie also in tropical Asia and tropical America.

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The rates of shrinkage are moderate, from green to oven dry 2.

The heartwood is strongly resistant to impregnation, the sapwood moderately resistant. The wood trade names: It grows to be about 40—50 m high. Retrieved from ” https: Ground young shoots and leaves are applied externally as an anodyne. The grain is straight or interlocked, texture rather coarse.

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It has thick and reddish brown bark. In kkhaya nursery, light shade ivkrensis advantageous for seedlings up to 2 years old; this reduces attacks by Hypsipyla shoot borers and the development of leaf galls. The boles float in water and thus can be transported by river. Planting the tree improves and enriches the soil, so many people use the tree for that as well. Its woody fruit is slightly thinner than those of Khaya grandfoliola. More extensive establishment of plantations of Khaya ivorensis is certainly desirable in tropical Africa, but Hypsipyla attack is a serious drawback.

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Some of these showed significant antifeedant activity in insects, and some antifungal and antibacterial activities. By using this site, you agree to the Terms of Use and Privacy Policy. The monoaxial state may persist to a height of 10 m. In lhaya Africa Khaya ivorensis has been planted successfully in mixed plantations, e.

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.