The objective of the investigations was to determine the effects of different methods of soil preparation and utilization of logging residues on the aboveground biomass of pine seedlings in a three year old artificially established culture. The statistical analyses showed a strong influence of the soil preparation methods on the biomass. The ways in which the logging residues were utilized on different sample plots did not significantly affect the biomass. The interaction between different methods of soil preparation and utilization of logging residues did not prove significant, either. The highest biomass values were found on plots where elevated rows had been established with a plow and where the soil had been prepared by plowing with a PLZ-75 plow, regardless of the way the logging residues were utilized. The lowest biomass values were found on all plots where the soil had been handled with a forest soil cutter, regardless of the logging residue utilization method.

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