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Olli Heikinheimo (email)

Taimitarhan maantieteellinen sijainti, siemenen alkuperä ja istutuskaudet

Heikinheimo O. (1954). Taimitarhan maantieteellinen sijainti, siemenen alkuperä ja istutuskaudet. Acta Forestalia Fennica vol. 61 no. 9 article id 7421. https://doi.org/10.14214/aff.7421

English title: Geographical location of a tree nursery, seed origin and planting seasons

Abstract

Planning of large central tree nurseries, which has become topical in Finland, means that the seedlings will be used in a wide geographical area. The nursery must decide which proveniences of seeds of the different tree species it will use. This concerns also the customer that buys the seedlings. The planting and lifting of the seedlings in the nursery have to be timed so that the seedlings are in a right state of growth at the time of planting.

The growth of the seedlings can, under certain conditions, be promoted by using a slightly southerly seed provenience, and large-sized seeds. There are, however, limitations to how much the seeds can be transferred northwards. If the nursery lies much south of the planting site, the seedlings have started height growth at the time of planting. This applies especially larch (Larix sp.), Scots pine (Pinus sylvestris L.) and birch (Betula sp.), but affects less Norway spruce (Picea abies (L.) Karst.). The problem can be handled by using a cool storage space for the seedlings waiting for a delivery in the nursery.

According to an international study, seedlings grown from seeds collected in countries south from Finland usually die already during the first two years in the nursery. Within Finland the seeds can be transferred at least by two latitudes. Spruce seems to tolerate longer transfer. Seed orchards should be planted south of the seed’s origin to ensure better yield and better quality seeds.

The Silva Fennica issue 61 was published in honour of professor Eino Saari‘s 60th birthday.
The PDF includes a summary in German.

Original keywords
taimitarha; taimituotanto; istutus; alkuperä; istutusaika; siemenet; siemenen alkuperä; istutuskausi

English keywords
planting; seedling production; seeds; provenience; tree nursery; planting time

Published in 1954

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Available at https://doi.org/10.14214/aff.7421 | Download PDF

Creative Commons License CC BY-SA 4.0

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