Studies on poplar cultivating methods in short rotation period for papermaking timber.
The effects of the poplar hybrid, density, cutting length, manuring and stumping on the biomass production of shoot and stock were studied. Hybrids included clones of Populus euramericana [P. canadensis], P. deltoides and P. × popularis. It was shown that hybrid, stumping and manuring had a significant effect on biomass production, and the density affected the biomass only during rotation periods of 1-2 years. The cutting length did not have a significant impact. The biomass and economic income for pulping were enhanced significantly as the rotation periods were extended from 1 to 3 years.