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The paper presents the assessment of growth parameters and the impact of pure stands of Scots pine, European larch, common birch and black alder on the reaction and chemical properties of the initial soils developed on the reclaimed sand pit ‘Szczakowa’ (southern Poland). Pine, larch and birch stands were characterized by good growth parameters, which confirms high adaptability of these species to...
Forest tree breeding is principally concerned with the improvement of growth, wood quality and vitality of tree species of economic interest. In Poland, breeding programs started in the second half of the twentieth century with the choice of plus trees to establish seed orchards. At present, seed orchards are a predominant source for the production of genetically improved seeds of conifers. In our...
The seeds of forest trees usually transfer numerous fungi species, including pathogens, facultative parasites and saprotrophs. The aim of the present work was to determine qualitative and quantitative composition of fungi inhabiting the seeds of 10 trees species i.e.: birch (Betula pendula Roth.), beech (Fagus sylvatica L.), red oak (Quercus rubra L.), common oak (Quercus robur L.), sycamore maple...
Paper analyses relationships between radial growth and seven crown−related parameters (crown length, relative length, width, slenderness, projection area and volume as well as single tree space) for ten alien and native tree species growing in 'common garden' conditions in the WULS−SGGW Forest Experimental Station in Rogów (central Poland). Significant correlation was found between 10− and 15−years...
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