The survival rate of acacia hybrid in this clonal test was excellent, exceeding 93% based on the result of 1 year height growth evaluation. While the averages of 4 controls of pure A. mangium and A. auriculiformis was 90%. This result indicated that the tested acacia hybrid clones well
adapted in the poor soil condition which is composed of acid (pH of 4.9) and clay texture with lack of N and P.