The variability of wood treatability of Brosimum rubescens Taub. Moraceae (pau-rainha) was evaluated. The tests were carried out on three different positions of the trunk (lower end, middle and upper end) and two parts (heartwood and sapwood) .The process used was the Full-Cell, also known as "Bethell" process, with CCA-A, at 2% concentration. The analysis of variability was based on retention (kg/m³). Retention data from the different positions and parts of the trunk were compared. The data showed that the sapwood is moderately difficult to preserve, whereas the heartwood is refractory. Retention on different positions in the trunk did not present significant differences, but there is a significant difference in retention between heartwood and sapwood. Microdistribution analysis of wood preservative by means of wood anatomy is used as an auxiliary tool for the interpretation of the results.
Amazon wood; preservation; absorption; retention; treatability
