The growth of scots pine provenances in 85-year-olds provenance trials in State Enterprise "Trostyanetske FE"
Journal Title: Лісівництво і агролісомеліорація - Year 2013, Vol 123, Issue
Abstract
Growth and qualitative characteristics of Scots pine provenance trials in SE "Trostyanetske FE" of Sumy region are analyzed. The dynamics of provenances growth in height and diameter within 85 years period is investigated. It is revealed that the growth deceleration of fast-growing provenances and the growth acceleration of slow-growing ones take place with age. For 55 years (from 30 to 85) the difference on the height between the fast- and slow-growing provenances has decreased in 2,6 times, on the diameter in 1,3 times, the volume of the provenance average tree in 1,9 times. Мost of all the difference diminished on the height between a tree-leader and middle tree into slow-growing provenances. It is found that only on the average height of provenance the age-related correlations for the observation period are credible and strong (r = 0,70–0,95). The power of influence of 85-year-old provenance origin factor on the average height (32,5 %) and the mean diameter (9,6 %) was determined. The best origins on both quantitative and quality signs in the conditions of test are pine-trees of local and Minsk (Belarus) provenances.
Authors and Affiliations
L. Tereshchenko, V. Samoday
Keywords
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