Replication Data for: Effects of biochar and nitrogen-enriched biochar on tree growth in Scots pine standsdoi:10.18710/6TUE9UDataverseNO2026-05-261Hanssen, Kjersti Holt, 2026, "Replication Data for: Effects of biochar and nitrogen-enriched biochar on tree growth in Scots pine stands", https://doi.org/10.18710/6TUE9U, DataverseNO, V1Replication Data for: Effects of biochar and nitrogen-enriched biochar on tree growth in Scots pine standsdoi:10.18710/6TUE9UHanssen, Kjersti HoltNorwegian Institute of Bioeconomy Research (NIBIO)South-East Norway302158DataverseNONorwegian Institute of Bioeconomy Research (NIBIO)Hanssen, Kjersti HoltHanssen, Kjersti Holt2026-05-19Agricultural Sciencesbiocharforestryfertilizationforest growth and yieldThese datasets were used in our study of the effects of adding biochar and nitrogen-enriched biochar on the growth of two middle-aged pine forest sites in SE Norway. In replicated field experiments, we applied four treatments consisting of an unfertilized control, and addition of biochar (2.5 t ha-1), nitrogen fertilizer (150 kg N ha-1), or biochar loaded with nitrogen (2.5 t biochar + 150 kg N ha-1). Height and diameter of trees were measured before and five growing seasons after treatment, and increment cores were taken at the end of the study period. The dataset “Annual_rings_10years” contains data for annual rings from each tree five years before treatment (2015-2019) and five years after treatment (2020-2024). Units are 1/100 mm. The dataset “Plot_data” contains the plot wise data on average diameter (cm), height (m), trees per ha, basal area (BA, m2 ha-1) and standing volume (VOL, m3 ha-1) for autumn 2019 (before treatment) and autumn 2024 (five years after treatment).2015-10-012024-10-302020-05-012024-08-31NorwayNorwayAkershus countyInnlandet countycounty11.4512.0960.0260.20Survey data<a href="http://creativecommons.org/publicdomain/zero/1.0">CC0 1.0</a>Effects of biochar and nitrogen-enriched biochar on tree growth in Scots pine stands (submitted for review)Effects of biochar and nitrogen-enriched biochar on tree growth in Scots pine stands (submitted for review)00_Readme.txttext/plainAnnual_rings_10years.csvtext/comma-separated-valuesPlot_data.csvtext/comma-separated-values