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Wood macrostructure of Norway spruce (Picea abies [L.] Karst) coming from an experimental site in the Siemianice Forest Experimental Station. The paper presents results of studies concerning the effect of provenance on the share of latewood in annual rings. Analyses were conducted on seven provenances grown on an experimental site located in the Siemianice Forest Experimental Station. It was established...
Proportion of sapwood and heartwood in stems of European Larch (Larix decidua Mill.) origin from provenances experimental plot. The aim of this work was to statě wether the wood from different provenances of European Larch (Larix decidua Mili.) show differences in proportion of sapwood and heartwood in stems. Research were carried out on 56 trees erepresenting 6 provenances of larch: Bliżyn (10),...
Von den organischen Körpern, ihrer Ernährung, ihrem Wachsthum und den Holzringen (Nach Hirsch 1762, v. Werneck 1791, Jester 1815, Kollmann 1961, Lexikon der Technik 196). Im Artikel wird ein kurzer Überblick über die Ansichten verschiedener Autoren zwischen 1762 und 1967 zu Ernährung, Wachstum und Jahresringen des Holzes gegeben.
The effect of the annual growth and the late wood share upon density of the Polish pine wood as a function of its origin. In the paper the variations of density of Polish pine (Pinus sylvestris L.) in a function of the late wood share in the annual growth with regard to the wood origin are presented. The measurement of density of wood was performed by using the stereometric method described in the...
In connection with the decline of spruce stands on the Krynica plots of IPTNS-IUFRO 1964/68, observed in the last decade and attributed to the so-called spiral disease, an attempt was made to determine whether the current health condition of trees is influenced by genotype (provenance). As shown by preliminary observations, the spruces differed in the degree of survival depending on provenance. The...
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