ZLV Online

The article documents the fertilization effects on the plantation of Grand fir in the area of the Czech-Moravian Highland (area the Žďárské vrchy Mts.), on typical poor sites (forest site group 5K – acid fir-beech site). The plantations were between 7 and 16 years old. The forest stands belong to the state lesy of Dr. Radslav Kinský, they are located in the altitude of 580 m a.s.l., the site is characterized by the forest type 5K8. As the amelioration matter, the slow-release fertilizer SILVAMIX was used in the tablets as well as in powdered form. Despite relatively low amount of nutrients applied, the plantations showed considerable increment effect in the case of both fertilizer forms. On these poor sites, the favourable fertilization effects can be expected introducing and re-introducing more site-demanding tree species, including the species studied.