The only commercial harvester on the market is a corn chopper with SRF head whose operative and mechanical characteristic did not allowed to harvest plants which basal diameter superior the 60 mm. This dimension is reached in one year age crops. As the industry request a product with low percentage of bark, it is preferable harvest poplar when it has almost two years age. The needs to develop a machine able to harvest 2 years old poplar arisen. A prototype, for two-years old poplar harvesting, has been constructed from the Spapperi Company Mechanical Constructions S.r.l. with scientific collaboration of the Panacea group.