Growth and form variations among seed sources of Acacia Decurrens willd. planted at Holetta, Central Ethiopia.
2003
Tesfaye Hunde and Belachew Gizachew(Researcher)
Five seed sources of Acacia decurrens (four from Australia and a local collection) were established at Holetta, central Ethiopia, in a randomized complete block design, the objective was to examine growth and from characteristics to identify suitable seed sources for future afforestation and tree improvement programmes at Holetta and in areas of similar agro-ecology. Parameters measured at age 10 (years) were tree height, diameter at breast height over bark, survival, stem form, branch diameter, number of branches and number of forks. Results of the analysis based on plot means revealed that significant seed source related variations were evident for survival and tree height. Local seed sources demonstrated the highest average height (15.34 m) and survival (85.5%). However, differences among seed sources in all other parameters were not important. All the seed sources revealed comparable growth performances. Trees from local collection adapted better and survived the conditions at Holetta. It would thus seem that there is a possibility of incorporating A. decurrents into fuel wood, construction wood, timber, agro-forestry system and tree improvement programs of the area following further studies for the suitability of the species to the respective uses and services.
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