International Trials of Acacia and Prosopis: Overview of results

bullet1 India
bullet2 Site: Phaltan

bullet3 Trial 19: Provenance trial of Acacia aneura

This trial was made up of nine provenances of the Australian tree Acacia aneura. Three provenances of Acacia holosericea (Australia) Acacia nilotica (India), Albizia lebbeck (India) were included as well. The trial was established in 1987 at a spacing of 3 x 3 metres and tended intensively. It was assessed after 5 years in 1992, and different growth parameters were measured and subjected to analyses of variance and multivariate analyses.

Even though survival was high for some provenances of Acacia aneura, the growth of this species was clearly inferior to the local Acacia nilotica and Albizia lebbeck. The local species were superior in all variables except number of stems, where Acacia aneura had the largest values.

Albizia lebbeck had the fastest growth, corresponding to an increment in basal area of 1.6 m2 ha-1 y-1, followed by Acacia nilotica with 1.2 m2 ha-1 y-1. The dry weight of Acacia nilotica was estimated to 3.9 t ha-1 y-1. The basal area of the fastest growing provenance of Acacia aneura was less than one tenth of the basal area of Albizia lebbeck. Too few trees of Acacia holosericea were included in the trial to say anything decisive on the performance of this species.

Even though there was a considerable variation between the provenances of Acacia aneura, the trial did not give firm statistical evidence of significant differences. The best provenances were found among the provenances from the Northern Territory in Australia.