Influence of preseeding treatment of seeds of Scots pine and Norway spruce on their viability and energy of germination

This work aims to study of the effectiveness of growth regulator s for pre-emergence treatment of seeds (Scots pine and Norway spruce) and their influence on viability and energy of germination of seeds and establishment of optimum duration of soaking seeds in solutions of the preparation and identify their most effective concentratio ns in depending on tree species. For this approach, we used preparations of Stimpo and Zircon. To study the efficiency of growth regulator Stimpo were prepared solutions with concen tration of 1.5; 2.0; 2.5 ml/l the Samples of seeds, which were treated with different concentrations, were left on soaking for 8, 14 and 20 h. To study the action of the preparation Zircon prepared solutions with concentration of 0.5; 1.0; 1.5 ml/10 l. Seed soaking was carried out for 12, 24 and 36 h. Comparison of the effectiveness of growth regulators was carried out with the control of samples of seeds, which were soaked in water. It is revealed that the best concentration for s eeds of Norway spruce, whic h were treated with the preparation Stimpo is 2.0 ml/l with soaking time for 14 h, and for Zircon – 1.0 ml/10 l with soaking for 24 h. For seeds of Scots pine the best concentration when applying growth regulator, Stimpo is 2.5 ml/l when soaking time for 14 h, and Zircon – 1.5 ml/10 l with soaking time for 24 h