Silva Fennica (Jan 1985)
The effect of large-scale nitrogen fertilization on growth and yield of mature Norway spruce stands in south-western Finland
Abstract
A method for calculation of the effect of practical fertilization for economic evaluation is presented and discussed. 55 Norway spruce ( (L.) H. Karst.) dominated stands on type sites were surveyed five to eight years after fertilization with nitrogen (90-170 kg/ha). The relationships between the fertilization effect and various stand characteristics were discussed. Fertilization increased the growth of the stands on an average by 2.2 m/ha/year. In total the increase of tree growth during the research period was 17.5 m3/ha. This corresponds to a yield of 525â659 FIM/ha.Picea abiesOxalis-Myrtillus3