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European mistletoe (Viscum album L.) is a semi−parasitic plant attacking selected tree species. It adversely affects the functioning of its hosts especially at water management level. Scots pine infestation by mistletoe subspecies Viscum album ssp. austriacum becomes more and more common. Mistletoe has been proven to have a negative impact on Scots pine cones, seedlings and seeds quality. Thus, we...
The paper describes a case study of thinning experiment established in 1976 with a use of random block design in 21−year−old Scots pine stand in Janów Lubelski Forest District (south−eastern Poland). The stand was subjected to no thinning (control variant K), weak thinning with removal of 10% of basal area (variant S1), strong thinning with removal of 30% of basal area (variant S3) and extreme thinning,...
Comparative cultivation experiment was carried out in the greenhouse to verify the assumption that increased air CO2 concentration (up to 1000 ppm) stimulates the infection intensity and mortality rate of Scots pine and Norway spruce seedlings subjected to the artificial inoculation with Armillaria ostoyae (Romagn.) Herink. It was found that increased air CO2 concentration reduces the intensity of...
Mechanical site preparation is recommended to create optimum conditions for seed germination and seedling growth in a clear−cut area. Lack of soil scarification or less−intense methods may be more suitable from an environmental point of view, but can result in a failure to obtain natural regeneration. This study compared the effects of three mechanical site preparation methods (SPM) characterized...
The aim of the study was to compare growth and survival of plug and bare−root seedlings planted at different dates. The experiment was established in 2003 in the Oleśnica Forest District (south−western Poland). Seedlings were planted at four dates: the end of August, September and October 2003 and the beginning of April 2004. The two−factorial experiment comprised eight treatments. It was established...
Different methods of logging slash management (LSM) and methods of soil preparation (MSP) can create different conditions for the growth of forest trees. This occurs through variation in soil aeration, tree nutrition or microbial conditions. These factors are modified by climate, soil fertility, treats from insects or fungal pathogens and renewed species. The aim of this study was to compare effects...
The aim of the study was to determine the impact of land relief on site index and growth parameters (height, diameter, slenderness) of Scots pine (Pinus sylvestris) stands on inland dunes in the Toruń Basin (N Poland). The study was conducted on 150 plots situated on north− and south−facing dune slopes (54 pairs of twin plots) as well as in intra−dune depressions (42 plots). Height and diameter of...
This paper describes the variability of Scots pine (Pinus sylvestris L.) provenances in the IUFRO experiment located in Rogów (central Poland). The silvicultural quality and growth of 17 European provenances at the age of 28 years were examined, including height, diameter at breast height, standing volume, straightness of stem and health status. Populations from Poland (Spała, Miłomłyn, Rychtal),...
The paper was aimed at determination of the effect of different tree density in the naturally regenerated monotypic and even aged young Scots pine stands growing in the fresh coniferous or mixed fresh coniferous forest sites on their further development. Research was carried out in Nowa Dęba Forest District (south−eastern Poland). A total of 12 research plots (160×40 m) were established in the selected...
In the situation of limited number of pesticides being approved for use in forest nurseries it is necessary to examine new products available on European market that stimulate growth and improve resilience and vitality of seedlings as a part of intgrated plant protection program. Paper presents test of fertilizer Actifos used in seven Polish nurseries in order to stimulate the growth of seedlings...
The aim of the study was to assess the effect of the application of Sincocin AL and inoculation with the fungi Hebeloma crustuliniforme or Laccaria bicolor on the growth and level of mycorrhizal colonization of Scots pine seedlings. Sincocin had no effect on the development of biometric parameters of pine seedlings inoculated with L. bicolor, it limited the growth of non−inoculated seedlings and stimulated...
Celem badań było porównanie wzrostu brzozy brodawkowatej (Betula pendula Roth) i sosny zwyczajnej (Pinus sylvestris L.) oraz stanu akarofauny (Acari) glebowej w 2-letnich uprawach na rekultywowanym terenie popoligonowym w Nadleśnictwie Żołędowo. Do zalesień wykorzystano 2-letnie sadzonki brzozy i sosny wyprodukowane w szkółkach polowych z zastosowaniem ściółkowania oraz metodą tradycyjną. Badania...
Badania prowadzono w 2012 r. w szkółce kontenerowej Bielawy (Nadleśnictwo Dobrzejewice) w cyklu produkcyjnym sadzonek sosny zwyczajnej (Pinus sylvestris L.). Sadzonki miały wysokość w zakresie 8,9-11,9 cm i średnicę w szyi korzeniowej od 2,8 do 3,7 mm. Na korzeniach sadzonek dominowały ektomikoryzy pojedyncze, stanowiąc od 45 do 64% wszystkich ektomikoryz, a ogólny stan zmikoryzowania zbadanych korzeni...
The study evaluated the effect of inoculation with Hebeloma crustuliniforme and application of Biochikol 020 PC to the soil in three doses (single, double and triple) on the growth of Scots pine in the nursery and plantation. Both treatments stimulated the growth of seedlings. The effect of Biochikol was found only in the nursery irrespective of the used doses of the preparation. The effect of mycorrhization...
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