Arid zone results webpage (Anders Rebild)
International Trials of Acacia and Prosopis: Overview of results.
Pinus kesiya webpage (Lars Graudal)
International Provenance Trials Overview
International Provenance Trials of Gmelina arborea Linn. Roxb.
In the mid-seventies a joint effort between 20 countries established more than 60 Gmelina arborea provenance trials, mainly outside the natural distribution areas of Gmelina.