Scots pine seedlings inoculated with 11 strains Rhizopogon roseolus were planted out on sylviculture area in March 2007. After 2 and 3 vegetation seasons height, stem diameter, number of buds and lateral shoot, length of the lateral shoots last season and seedlings survival were studied. The highest were seedlings inoculated with strain A, C, D, G, J and K (after 2 and 3 years). However the most thickness were seedlings inoculated with strain J (after 2 year) and D, E, J (after 3 year). Survival of seedlings was higher than 85%, without seedlings inoculated strain H.