The development of the root system in mixed species silviculture of Scots pine (Pinus sylvestris L.)

Kocjan, H.

Sylwan 141(2): 23-30


ISSN/ISBN: 0039-7660
Accession: 003300007

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A mixed plantation experiment was established on 2 plots in 1975 and 1980 in the area of the Regional Directorate of State Forests at Pia, Poland, in Wronki Forest District, under dry coniferous forest site conditions. The species mixed with Pinus sylvestris were European larch (Larix europaea [L. decidua]), sessile oak (Quercus sessilis [Q. petraea]), red oak (Q. rubra), grey alder (Alnus incana), common birch (Betula verrucosa [B. pendula]) and American bird cherry (Padus serotina [Prunus serotina]). Observations on root development in the mixtures were carried out the third, fifth, and eighth years of the plantations. Alder and birch were characterized by a widely spreading root system. The root systems of the oak species developed the least, and some of these species died. Mineral fertilizer applied did not have a marked impact on growth and development of the root systems in individual mixtures.