OBSERVATIONS ON CONE AND SEED PRODUCTION IN PLANTATIONS OF SCOTS PINE IN SCOTLAND

1 October 1954

journal article
Published by Oxford University Press (OUP) in Forestry: An International Journal of Forest Research

Vol. 27 (2) , 122-133
https://doi.org/10.1093/forestry/27.2.122

Abstract

THE results of investigations carried out over a period of five years (1948–52) in a typical stand of planted Scots pine ( Pinus sylvestris L.) in Aberdeenshire are presented. A marked fluctuation in cone production per tree during the period was observed. An examination of the meteorological data suggests a possible correlation between cone production and the temperature conditions at the time of flowering. The number of seeds per cone varies within wide limits. Marked variation in cone type was observed, but without a systematic classification of cone types for the species it is not possible to connect type with productivity. A significant relationship between dominance and both cone and seed production was established. A comparison between visual estimates and actual counts of cone crops revealed that a high degree of accuracy can be obtained by visual estimate.

Keywords

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