Effect of timber trees residues and its compost application on growth of some local trees grown in Egypt.

Includes references.

The main objective of this study was to find out the best way for using disposal wood wastes in organic manure (compost) for increasing the economical return. Two experiments were designed to study the effect of different soil treatments containing timer trees residues as wastes of sawdust, leaves and bark directly in cultivation (Experiment No.1), as well as using wastes with addition of nitrogen and using compost of different wastes (Experiment No.2). The results of the first experiment revealed that the utilization of eucalypt leaves after mixing with either sand or clay as a source of medium soil without any treatment is recommended for Eucalyptus camaldulensis, Casuarina cunninghamiana and Acacia saligna plantations. On the other hand, the results of the second experiment showed that the utilization of a compost of sawdust, bark and leaves after mixing with sandy and clay soil is recommended for the same species plantation as a growing medium than that of sawdust, bark and leaves supplied directly with nitrogen (ammonium sulfate).

Summary in Arabic.

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