Summary
The authors present the Periodic mean Increment of the diameter at breast height (D.B.H.) of twenty rose-wood trees (Aniba duckei Kostermans) during the period of 12.5 years In primary tropical rain forest of Ducke Forest Reserve (Manaus-Central Amazon Region-Brasil). The mean increment was 0,38 cm/year, the minimum value 0,16 cm/year and the maximum 0,74 cm/ year. The authors consider growth rates adequate for forest management of this species by means of natural regeneration, particularly as growth will be accelerated by silvicultural treatment.