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V. T. Aaltonen (email)

Muutamia kasvukokeita puuntaimilla

Aaltonen V. T. (1942). Muutamia kasvukokeita puuntaimilla. Acta Forestalia Fennica vol. 50 no. 6 article id 7359. https://doi.org/10.14214/aff.7359

English title: Growth studies on tree seedlings

Abstract

The aim of the study was to investigate effect of growth conditions on germination and growth of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) Karst.) seedlings in greenhouse conditions. Germination of seeds becomes markedly slower as the soil temperature decreases. It seems that low temperatures affect more Norway spruce than Scots pine. When temperature rises, the fresh weight of the seedlings increases more in pine seedlings than in spruce seedlings. Accordingly, lower temperatures affect less the weight growth of spruce seedling than that of pine seedlings.

An experiment testing how root competition affect germination showed that adjacent seedlings decrease germination of seeds more than shading with branches. The effect was strongest on pine and spruce seedlings when the shading tree species was fast growing birch (Betula sp.). On the other hand, shading affected most height growth of birch seedlings. Growing space can vary in relatively large range without it affecting greatly tree growth.

The PDF includes a summary in German.

Original keywords
kuusi; mänty; taimikasvatus; koivu; kilpailu; itäminen; kasvututkimukset

English keywords
Pinus sylvestris; Norway spruce; birch; Picea abies; Scots pine; competition; Betula sp.; growth studies; germinatio

Published in 1942

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Available at https://doi.org/10.14214/aff.7359 | Download PDF

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