Duration of influence of planting materials’ parameters on growth of forest cultures

The effectiveness of artificial forest recovery is largely determined by the quality of planting material under equal conditions. To determine the duration of the influence of planting material on the survival and growth of forest crops forest plantations of pine and spruce have been studied and analyzed. The studied plantations grew on fresh clearings of spruce forests, fresh and humid bilberry areas in the North-taiga region. Analysis of the performed research allows us to conclude that the impact of the quality of planting material on the condition and growth of forest crops of pine and spruce affects forest cultures until they reach the age of at least 28 years old. This is particularly evident when using selected seedlings and saplings. These cultures have stable growth and are more resistant to adverse environmental factors.