This trial was made up of the two species Prosopis cineraria and P. pallida, established in 1985 with a spacing of 4 x 4 metres. The assessment took place 8 years later in 1993. The provenances of P. cineraria were from India, Pakistan and Yemen, whereas the provenances of P. pallida were from Peru. A local provenance of Acacia senegal was included as a control.
The growth of P. cineraria was very poor, and only survival was registered. For the other species, a number of growth parameters were measured. There were no significant differences between the provenances, but from the raw data it seemed that the provenance of A. senegal had a considerably larger basal area of the mean tree as well as dry weight of the mean tree than had the rest of the provenances. The lack of significance is in part due to the poor survival and the low number of replicates. Planting of P. cineraria can thus not be recommended, and before commencing plantations of P. pallida, a larger number of provenances should be tested. The dry weight production of the best provenance was approximately 0.8 t ha-1 y-1.