Possibility the use biopreparations from coniferous raw materials in artificial reforestation of Scots pine

Ecologically safe biopreparations for agriculture are obtained from the waste of natural raw materials - greenery (needles), which remains after large-scale logging operations. These products (fir extract and spruce extract) contain natural triterpene acids, plant phenolic compounds and flavonoids. Although the growth regulators with similar characteristics are used in forest nurseries, there is still no data about the seedlings growth that were obtained under the influence of these preparations and then planted in the forest. The goal was to study the effect of biological preparations on the Scotch pine growth when it grown in a forest nursery, and then, in the forest culture. The experiments with pre-sowing treatment of pine seeds and its planting were conducted in the forest nursery. Seeds were soaked in preparation solutions (doses of 0.1 and 0.25 ml/kg of seeds) for 6 h. After growing of pine trees in the nursery, plot with cultures from these seedlings was created in the forest. Before planting in the forest, the seedlings were measured (stem height, root collar diameter). Measurements of pine trees were also taken three years in a row in the forest plot (stem height, root collar diameter, increment). Shown that a once seeds treatment by biostimulants ensured high survival and adaptation of pine when it was transplanted into the forest. The biometric characteristics of young trees were higher in the third year than in the ones from the control variant. Concluded that biostimulants obtained from coniferous raw materials are recommended for Scots pine growing in nurseries and increasing the forest cultures sustainability.

biopreparation, Pinus sylvestris, coniferous raw, forest cultures, plant biostimulants, pine seedlings