4In Europe, farmers prefer the very Short Rotation Coppice (vSRC) cultivation model, with a 5 very high plant density (5500-14000 p ha -1 ) and a harvesting cycle of 1-4 years; while in Italy, 6 recently, the farmers prefer the Short Rotation Coppice (SRC) method, with a high plant 7 density (1000-2000 p ha -1 ) and a harvesting cycle of 5-7 years. This is because the most recent 8 poplar hybrids have enhanced productivity and improved the biomass quality (calorific 9 value), as a result of a better wood/bark ratio.
10In order to evaluate, from the energy and economic point of view, a poplar SRC, in the river 11 Po Valley, an ad hoc study was made and a specific model was developed.
12On the basis of this cultivation technique, an energy and economic evaluation of a poplar SRC