Summary
Througt the silvicultural manegment in native rubber in the micro-region of Alto Purus-Acre-Brazil, it was attained an increase in density of rubber plants by "estrada" in "Pirã de Rã" native rubber situated at Boca do Acre old road, in Senador Guiomard county 31 km from Rio Branco city, in such increase it would be possible to reduce the high cost of rubber production in native rubber plants which is mainly due to the low density of mature trees for tapping.