Provenances of mangium (Acacia mangium Willd.) from Queensland (Australia),
Papua New Guinea and Indonesia were planted under three site conditions
of Ilocos Norte, Masbate and Bukidnon regions in the Philippines which are
edaphically, climatically and topographically different from each other.
Highly significant (P<0.01) variations in diameter, height and merchantable height growth performances of 18 provenances at Ilocos Norte, 12 provenances at Masbate and 12 provenances at Bukidnon at5.5 years after planting were observed. The best growth was observed in Bukidnon site, and the provenance 13240 (Ellerbeck Rd. Qld.) of the species exhibited the best growth performance at that site which could be selected for pilot plantation trials in the Philippines.