Abstract
Silver birch seedlings were grown in two types of trays differing incell volume. For each kind of tray, three different spacings were achieved bygrowing seedlings in all, half or one quarter of the cells. The planting-stockso produced was out-planted at two forest sites and growth followed for fiveyears. Container size had a large effect on seedling morphology and on fieldperformance. Density also had a large effect on seedling morphology, but littleinfluence on performance. The tightest relationship of field performance was tothe mean dry weight of the stems of the planting stock (R2 = 0.94).Mean height and ‘sturdiness’ index, defined as diameter ÷height, were not correlated with performance. Of the non-destructivemeasurements, mean root-collar diameter was the most closely correlated withperformance.
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Aphalo, P., Rikala, R. Field performance of silver-birch planting-stock grown at different spacing and in containers of different volume. New Forests 25, 93–108 (2003). https://doi.org/10.1023/A:1022618810937
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DOI: https://doi.org/10.1023/A:1022618810937