International Trials of Acacia and Prosopis: Overview of results

bullet1 India
bullet2 Site: Mettupalayam

bullet3 Trial 18: Provenance trial of Acacia tortilis and Prosopis chilensis

This trial was made up of 13 provenances of the species Acacia tortilis and Prosopis chilensis. Two provenances of A. difficilis and A. planifrons were included as well. Geographically the provenances span widely, being from Sudan, Israel, Yemen, Honduras, Australia and India. The trial was established with a spacing of 2 x 2 metres between 1985 and 1987, and was assessed after 5 years in 1992. Being a trial without replications and with provenances planted in different years, it has more the character of a demonstration trial, and it is difficult to give recommendations on the choice of provenance.

Survival was high, varying between 60 and 100 %. A provenance of P. juliflora had the fastest growth, corresponding to 11 t ha-1 y-1. The identity of this provenance is not known. The other provenances had a considerably lower production. A. difficilis and A. planifrons were at the high end, whereas within A. tortilis and P. juliflora there was a large variation between provenances. Data indicated that A. tortilis subsp. raddiana had a better performance at the site than had A. tortilis subsp. spirocarpa.