Production d'Eucalyptus camaldulensis dans quelques placettes permanentes a Sidi Yahia du Rharb

الملخص EN

Production of Eucalyptus oamaldulens'Cs coppice stands was surveyed during several rotations in a few permanent plots situated in the South of the Rharb region (Morocco).

As concerns the studied cases, it was observed that : - mean annual increment is fairly constant till the age of 14 to 16 years during every rotation ; - yield loss is 10 to 40 % in the third rotation, in comparison with the production of the second rotation ; - increment goes on decreasing during the fourth rotation.

For these reasons, yield capacity of the given sites is not used completely if clear cut is practiced every 10 to 12 years .

Time of rotation should be extended to 14-16 years in order to produce a maximum quantity of pulpwood having the sizes required by the factory concerned in Sidi Yahia du Rharb.

Owing to the absence of replications, the conclusions are not final .