Silva Fennica (Jan 1985)

The effect of large-scale nitrogen fertilization on growth and yield of mature Norway spruce stands in south-western Finland

  • Westman, Carl,
  • Leikola, Matti,
  • Nummi, Tapio

DOI
https://doi.org/10.14214/sf.a15432
Journal volume & issue
Vol. 19, no. 4

Abstract

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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 525–659 FIM/ha.Picea abiesOxalis-Myrtillus3