Table 1. Treatments and amount of nutrients applied in the treatments.
Treatment Nutrients kg ha–1
N P K Ca Mg B Zn
Control 0 0 0 0 0 0 0
Granulated ash 0 73 190 836 134 1.6 18
Loose ash 0 82 202 969 155 1.6 22
PK fertiliser 0 45 80 110 0 1.5 0
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Fig. 1. Dominant height (A) and DBH (B) at Kannus experiment and dominant height at Sievi experiment (C). View larger in new window/tab.

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Fig. 2. Development of stand volume (A) in the Kannus and in the Sievi experiment (B) at time points 10 and 15 years after fertilisation. Bars show standard deviation.

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Fig. 3. Foliar nutrient concentrations at Kannus experiment. Dotted horizontal straight lines indicate deficiency limits for N, P, K and B (Paarlahti et al. 1971; Reinikainen et al. 1998). F and p values for treatment (Ftreat), year (Fyear) and treatment and year interaction (Ft*y) shown in the figures. View larger in new window/tab.

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Fig. 4. Foliar nutrient concentrations in the Sievi experiment. Dotted horizontal straight lines indicate deficiency limits for N, P, K and B (Paarlahti et al. 1971; Reinikainen et al. 1998). F and p values for treatment (Ftreat), year (Fyear) and treatment and year interaction (Ft*y) shown in the figures. View larger in new window/tab.