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Ukko Rummukainen (email)

Männyn ja kuusen käpysadosta ja sen arvioinnista vuosina 1950-1953

Rummukainen U. (1954). Männyn ja kuusen käpysadosta ja sen arvioinnista vuosina 1950-1953. Acta Forestalia Fennica vol. 61 no. 20 article id 7432. https://doi.org/10.14214/aff.7432

English title: Estimation of Scots pine and Norway spruce cone crop in 1950-1953

Abstract

The cone crop of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) Karst.) has been assessed in Finland since 1930 annually by sending a questionnaire to forest professionals around the country. Based on the result it is decided if the crop is good enough for collection of the cones next winter. This article presents the results of cone surveys in 1950-1953, and suggest improvements in the method of the investigation.

According to the survey, Scots pine crop was best in 1952, when the crop was intermediate in the whole country, and relatively abundant in the county of Lapland. Norway spruce crop was best in 1951, when the crop was better than in average in the whole country. The evaluators had variable opinions whether the crop was good enough for cone collection or not. They assessed the pine cone collection more often as profitable than the spruce cone collection. Usual reasons to regard spruce cone collection as unprofitable were seed damages and the sites being too far away. To make the results more uniform and accurate, a suggestion to change the evaluation method is presented. The evaluation should be focused on the cone crop of mature stands.

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

Original keywords
kuusi; mänty; käpysato; siemenkeräys; käpykeräys; arviointimenetelmä

English keywords
Pinus sylvestris; Norway spruce; Picea abies; Scots pine; seed collection; cone crop; cone collection; assessment method

Published in 1954

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Available at https://doi.org/10.14214/aff.7432 | Download PDF

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