Rational forest management requires an adequately large and properly managed seed base which would provide a sufficient amount of highquality seed.For silver fir (Abies alba Mill.), stands the Beskid Sądecki Niski mountain ranges Carpathians, belonging to most valuable provenances this species in Poland, make such base.They are high genetic silvicultural value, their progeny is characterized by good growth survival as well plasticity, i.e. weak response variable climatic soil conditions,...

In the past, entire region of Poland was overgrown by forests. Due to economic changes, forest cover reduced 40% in 18th century and 21% after Second World War. After war, Polish foresters undertook considerable efforts increase 30.8% 2015. forests are characterized dominance oligo- mesotrophic coniferous species (68.7%). This include pioneer species, Scots pine. It covers approximately 60% area. The composition determined artificial regenerations. However, currently prevailing direction...

Abstract The effectiveness of different peat-based substrates was compared for the propagation two mountain tree species (silver fir and European beech). experiment set up in spring 2006, seedlings were grown polystyrene multipots 2 years. Four types substrate applied: (1) a newly prepared 1:1 peat-sawdust mixture; (2) mixture which had already been used five production periods; (3) peat produced ‘Nędza’ container nursery (Rudy Raciborskie Forest District), consisting perlite; (4) substrate,...

Abstract This research was carried out on two experimental plots located in the Rymanów and Nawojowa forest districts. In second fifth year after planting, at three six years of age respectively, survival height 25 beech progenies selected seed stands were measured. Furthermore, we show effect origin growth environment (significant ‘provenance × block’ test plot’ interactions). Beeches from both differed significantly this difference increased with tree age. The highest provenance...

Abstract This study was focused on the evaluation of beech adaptation test plots in Góra Śląska and Świebodzin Forest Districts. For this purpose, we examined offspring from seed stands growing Regional Directorates State Forests Szczecin, Szczecinek, Piła, Zielona Poznań, which were brought to both plots. The aim determine adaptive response these after five years growth with respect changed environmental conditions compared site origin. Our analysis revealed a relatively low survival rate,...

The study uses data from 2288 sample plots established in forest stands with limited human interference the Carpathian National Parks (the Bieszczady, Magura, Gorce, and Babia Góra Parks).The research area is characterised by a full habitat spectrum of lower montane zone western arc Carpathians.The aim was to verify hypothesis that among trees forming stand, species have positive or negative impact on number natural young seedlings firs, beeches, spruces sycamores can be separated.A basal...

The aim of the study was to analyse viability and differentiation degree low temperature resistance one-year-old Scots pine (Pinus sylvestris L.) seedlings after wintering in field.Nursery material grown from seeds collected 4 seed objects growing following forest districts: Kędzierzyn (P1), Chrzanów (P2), Rudy Raciborskie (P3) as well orchard Miechów Forest District (P0).In addition, a sample showing signs damage (P4) also analysed (Table 1).The electrical conductivity electrolytes released...

The aim of the study was to compare growth parameters and indicators seedlings’ breeding usefulness assessment depending on their quality class, which determined basis requirements Polish standard PN-R-67025 (1999). research material consisted European beech seedlings grown in controlled conditions, were divided into three classes (“class I”, “class II”, “classless”). seed lings belonging individual differed significantly parameters, with exception length root system, highest values...