Growth and Condition of Siberian Cedar Pine in Mixed Cultures during Introduction in the Moscow region

The growth and condition of Siberian cedar pine in mixed 27-year-old forest plantations with a planting density of 9 thousand pcs/ha were studied, with a row-byrow mixture of: 1 row of Siberian cedar pine, 2 rows of European spruce, 1 row of Siberian larch, 2 rows of European spruce. The studies showed that Siberian cedar pine in the plantations had a low safety rate – 17% (3.4 times less than spruce and 1.7 times less than larch), and of the surviving ones, only 19% were in good condition. It lagged far behind other species in trunk height and diameter and crown diameter. The study of the growth dynamics in trunk height and diameter on model trees showed that the negative impact of spruce on Siberian pine begins to manifest itself after 10 years of forest plantations. It is concluded that Siberian cedar pine is not competitive with European spruce in mixed cultures. It is recommended to create pure cultures of Siberian cedar pine.