Features of winter transplanting technology for successful survival and adaptation of large-sized softwood seedlings in urban landscapes

The article analyzes the factors affecting the death of seedlings of Common pine (Pinus sylvestris L.) with a formed root system, after a winter transplant. The survival rate of large seedlings was evaluated under conditions of urban landscapes, with winter transplant technology. It has been proved that protection of the root coma from the effects of negative temperatures (from -5 °C and below) in the technology for planting and storing large-sized coniferous planting material can reduce plant death by up to 10 %. Based on experimental data, the optimal ratio of coma parameters and the height of young plants for the transplantation of large-sized seedlings of Scotspine in the winter is proposed.