The experience of growing planting material with closed root system in the Belarusian forestries

Abstract

Studies on the cultivation of planting material with closed root system were carried out in connection with large-scale plans of the Ministry of Forestry to introduce it in reforestation and afforestation according to the developed document “Sectoral program for growing seed lings with closed root system in the organizations of the Ministry of Forestry of the Republic of Belarus for the period up to 2020 year”. To study the experience of growing seedlings with closed root system, studi es were carried out an-nual seedlings age of Scots pine, Norway spruce and European larch in different forest enterprises in Belarus. Measured their biometric parameters, made comparisons between different rotations and calculates statistics. Perform chemical analysis of s ubstrate for growing seedlings. Revealed differences in the properties of the substrate on receipt of standard seedlings and seedlings have not reached the standard param-eters, due to the fact that the di fferentiation by size of seedlings observed indicators intact containers. In containers with seedlings standard parameters marked higher acidity, lower content of exchangeable bases and higher security nutrients. Significant differences in biometrics seedlings among the forestry enterprises is also confirmed by the properties of the substrate. This leads to the the need to prepare an optimal substrate for the cultivation of planting material with closed root system.