This trial was made up of four provenances of Prosopis juliflora, coming from Brazil, Honduras, Mexico and Senegal. The trial was established in 1988 with a spacing of 6 x 6 metres and assessed after 5 years in 1992.
The fastest growing provenances had increment rates in basal area of 0.3 m2 ha-1 y-1, corresponding to a dry weight production of approximately 1.1 t ha-1 y-1. Though having a moderate survival, the Brazilian provenance had the fastest growth together with the provenance from Senegal. The provenance from Honduras had a creeping growth habit, and in the multivariate analysis, the provenances from Honduras and Mexico were clearly separated from the land-races from Brazil and Senegal, as well as from each other. The differences between the provenances were significant for all the analysed variables.