The use of composted sewage sludge and forest ectohumus for enrichment of soils in the one-year production cycle of scots pine seedlings

The use of forest humus for revitalization of soil in the one-year production cycle for white birch seedlings

The use of forest humus for revitalization of soil in the one-year production cycle for scots pine seedlings

USE OF COMPOSTED SLUDGE AND FOREST ECTOHUMUS TO ENRICH SOIL IN TWO- AND THREE-YEAR CULTIVATION OF SCOTS PINE IN A FOREST NURSERY