Current issue: 53(4)

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Silva Fennica 1926-1997
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1970-1979
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Acta Forestalia Fennica
1953-1968
1933-1952
1913-1932

Articles containing the keyword 'Wurzel'.

Category: Article

article id 7465, category Article
Leo Heikurainen. (1955). Ü̈ber Veränderungen in den Wurzelverhältnissen der Kiefernbestände auf Moorböden im Laufe des Jahres. Acta Forestalia Fennica vol. 65 no. 2 article id 7465. https://doi.org/10.14214/aff.7465
English title: On the seasonal changes of root system of a pine stands on the peatlands.
Original keywords: Kiefer; Moor; Wurzelverhältnis; Jahreszeit

The seasonal changes of the roots systems of a pine stand on the peatlands have been studied with samples collected during summers 1952-1954 and winter 1955. There are altogether seven sample areas that are located in the district of Korkeakoski.  

The amount of roots is at the smallest in the spring, increasing then rapidly and peaking at the end of July. After that the amount of roots decreases again against the winter to the same size than in the spring. Variations seem to be similar in every year and also similar to other studies on mineral soils.

The PDF contains a summary in Finnish. 

  • Heikurainen, ORCID ID:E-mail:
article id 7464, category Article
Erkki K. Kalela. (1956). Ü̈ber Veränderungen in den Wurzelverhältnissen der Kiefernbestände im Laufe der Vegetationsperiode. Acta Forestalia Fennica vol. 65 no. 1 article id 7464. https://doi.org/10.14214/aff.7464
English title: Variations of the root systems of a pine stand during the growing period.

The article presents the results of the studies about the horizontal root systems of pine. The results have been obtained with the method developed by the author.

The size of the root system varies very strongly during the growing period. The amount of roots is at the smallest in the spring, increasing then rapidly and peaking at the end of July. After that the amount of roots decreases again against the winter to the same size than in the spring. The differences are due the changes in the amount of the smallest roots. There seem to be no big differences in the amount of roots between stand of different ages.

After the thinning there is a drop in the amount of roots on the stand level, but after two growing periods then standing trees have taken over the unused land. However after selection felling the less vital trees are not capable of utilizing the vacant resource as effectively.     

The PDF contains a summary in Finnish. 

  • Kalela, ORCID ID:E-mail:
article id 7264, category Article
P. Kokkonen. (1931). Untersuchungen über die Wurzeln der Getreidepflanzen I: Die Wurzelformen, ihr Bau, ihre Aufgabe und Lage im Wurzelsystem. Acta Forestalia Fennica vol. 37 no. 2 article id 7264. https://doi.org/10.14214/aff.7264
English title: Studies on the root systems of cereals I: the Root form, their structure, function and position in root system.
English keywords: cereals; root systems; function; rye; oat; wheat; barley

Knowledge on the roots systems and their properties is needed when for example assessing the wintering properties of a plant. The article presents the studies on the roots and their functions made with rye, wheat, oat and barley.

The data has been collected during the whole growing season. The experiments took place in the green houses of the University of Helsinki and on the experiment field in Tikkurila, some kilometres north from Helsinki.

The roots of cultivable crop can be divided according their function, state of development, structure and position in the root system into four classes. The classes are sprouting roots, nutriment roots, nutriment-support roots and support roots.

The PDF contains a summary in Finnish. 

  • Kokkonen, ORCID ID:E-mail:
article id 7212, category Article
P. Kokkonen. (1927). Über das Verhältnis der Winterfestigkeit des Roggens zur Dehnbarkeit und Dehnungsfestigkeit seiner Wurzeln. Acta Forestalia Fennica vol. 33 no. 3 article id 7212. https://doi.org/10.14214/aff.7212
English title: On the relation between the hibernation of rye and the extensibility and the tensile strength of its roots.

In attempts to improve the autumn cereals, wheat and rye, hibernation plays an essential role. Those varieties that hibernate well should be marketed and others rejected. Concerning roots, it seems that varieties that hibernate well have more extent root system than those hibernating poorly.

Four varieties of rye were chosen for experiments, two that knowingly hibernate well and two that don’t. The experiments were grown in the Botanical gardens of the university and at the same time in experiment field in Tikkurila.

The results proof that plant hibernating well have more extensible roots than others and hence they survive better in frosting soil that extents.

The PDF contains a summary in English and in Finnish.

  • Kokkonen, ORCID ID:E-mail:
article id 7211, category Article
Erkki Laitakari. (1929). Die Wurzelforschung in ihrer Beziehung zur praktischen Forstwirtschaft. Acta Forestalia Fennica vol. 33 no. 2 article id 7211. https://doi.org/10.14214/aff.7211
English title: Research on roots on their relationship to practical forestry.

The growth of a tree or a forest stand can be only fully understood when the form, encroachment and development of the root s in different environments are known. Research on roots has already yielded in practical silvicultural improvements and the purpose of this study is to discuss different factors about the roots.  

The literature review deals with the depth of root system, extent of it, the relation between root system and the soil structure, the form and volume of roots and the phenomenon where roots from several tree individuals grow together.

The PDF contains the article also in Finnish.   

  • Laitakari, ORCID ID:E-mail:
article id 7211, category Article
Erkki Laitakari. (1929). Die Wurzelforschung in ihrer Beziehung zur praktischen Forstwirtschaft. Acta Forestalia Fennica vol. 33 no. 2 article id 7211. https://doi.org/10.14214/aff.7211
English title: Research on roots on their relationship to practical forestry.

The growth of a tree or a forest stand can be only fully understood when the form, encroachment and development of the root s in different environments are known. Research on roots has already yielded in practical silvicultural improvements and the purpose of this study is to discuss different factors about the roots.  

The literature review deals with the depth of root system, extent of it, the relation between root system and the soil structure, the form and volume of roots and the phenomenon where roots from several tree individuals grow together.

The PDF contains the article also in Finnish.   

  • Laitakari, ORCID ID:E-mail:
article id 7086, category Article
P. Kokkonen. (1923). Beobachtungen über das Wurzelsystem der Kiefer im Moorböden. Acta Forestalia Fennica vol. 25 no. 11 article id 7086. https://doi.org/10.14214/aff.7086
English title: Observations on the root system of pine on marshy soils.
English keywords: peatlands; root system; root growth; pine

The data has been collected during 1919 and 1920 in different region of Finland. The studied peatlands varied from fuscum pine swamps to pine swamps and partly to better sedge pine swamps.

The study presents five different forms of root systems. The root growth of pine on peatlands seems to vary strongly from the root form on mineral soils. On the peatlands, where the ground water near to soil cover is, can the roots grow only near the soil surface where the conditions are suitable. For the pine typical tap root is in most cases absent or grows along the soil surface. Also the frost heaving, snow and characteristics of peat affect the root system.   

  • Kokkonen, ORCID ID:E-mail:
article id 7086, category Article
P. Kokkonen. (1923). Beobachtungen über das Wurzelsystem der Kiefer im Moorböden. Acta Forestalia Fennica vol. 25 no. 11 article id 7086. https://doi.org/10.14214/aff.7086
English title: Observations on the root system of pine on marshy soils.
English keywords: peatlands; root system; root growth; pine

The data has been collected during 1919 and 1920 in different region of Finland. The studied peatlands varied from fuscum pine swamps to pine swamps and partly to better sedge pine swamps.

The study presents five different forms of root systems. The root growth of pine on peatlands seems to vary strongly from the root form on mineral soils. On the peatlands, where the ground water near to soil cover is, can the roots grow only near the soil surface where the conditions are suitable. For the pine typical tap root is in most cases absent or grows along the soil surface. Also the frost heaving, snow and characteristics of peat affect the root system.   

  • Kokkonen, ORCID ID:E-mail:
article id 7081, category Article
V. T. Aaltonen. (1923). Über die räumliche Ordnung der Pflanzen auf dem Felde und im Walde. Acta Forestalia Fennica vol. 25 no. 6 article id 7081. https://doi.org/10.14214/aff.7081
English title: On the spatial order of plants on fields and in forests.
Original keywords: Wurzeln; Feldversuche; Mais; Waldtypen; Boden

The article contains a literature review about the spatial order of plants and a description of the small-scale experiments with corn. The literature is primarily of German origin. The question of the spatial conditions of trees in forest is important for practice of silviculture. The first part of the article illustrates based on the literature the importance of roots and root concurrence for the development of plants or forest stands. The second and third part deepens the methodological knowledge on root research. Fourth part is the field experiments with corn. There are no clear relation to be found between yield and the number of plants.  

  • Aaltonen, ORCID ID:E-mail:
article id 7034, category Article
V. T. Aaltonen. (1920). Über die Ausbreitung und den Reichtum der Baumwurzeln in den Heidewäldern Lapplands. Acta Forestalia Fennica vol. 14 no. 1 article id 7034. https://doi.org/10.14214/aff.7034
English title: The distribution and abundance of the tree roots in the heathy forests on Lapland.

The study presents and describes the abundance and distribution of tree roots in specific stands of heathy forest types in Lapland. The data was collected in the Sodankylä commune.  

Due to the shortcomings in the data, conclusions can be drawn only regarding pine forests. The result of study states that the root competition plays an important role in the development of the forests, and most of the other observed phenomena are linked with root competition. The more infertile the soil the vertically and horizontally wider and more abundant the root system. It seems that the abundance of the root system is similar in forest of same fertility class and same density and age.      

  • Aaltonen, ORCID ID:E-mail:
article id 7034, category Article
V. T. Aaltonen. (1920). Über die Ausbreitung und den Reichtum der Baumwurzeln in den Heidewäldern Lapplands. Acta Forestalia Fennica vol. 14 no. 1 article id 7034. https://doi.org/10.14214/aff.7034
English title: The distribution and abundance of the tree roots in the heathy forests on Lapland.

The study presents and describes the abundance and distribution of tree roots in specific stands of heathy forest types in Lapland. The data was collected in the Sodankylä commune.  

Due to the shortcomings in the data, conclusions can be drawn only regarding pine forests. The result of study states that the root competition plays an important role in the development of the forests, and most of the other observed phenomena are linked with root competition. The more infertile the soil the vertically and horizontally wider and more abundant the root system. It seems that the abundance of the root system is similar in forest of same fertility class and same density and age.      

  • Aaltonen, ORCID ID:E-mail:
article id 7034, category Article
V. T. Aaltonen. (1920). Über die Ausbreitung und den Reichtum der Baumwurzeln in den Heidewäldern Lapplands. Acta Forestalia Fennica vol. 14 no. 1 article id 7034. https://doi.org/10.14214/aff.7034
English title: The distribution and abundance of the tree roots in the heathy forests on Lapland.

The study presents and describes the abundance and distribution of tree roots in specific stands of heathy forest types in Lapland. The data was collected in the Sodankylä commune.  

Due to the shortcomings in the data, conclusions can be drawn only regarding pine forests. The result of study states that the root competition plays an important role in the development of the forests, and most of the other observed phenomena are linked with root competition. The more infertile the soil the vertically and horizontally wider and more abundant the root system. It seems that the abundance of the root system is similar in forest of same fertility class and same density and age.      

  • Aaltonen, ORCID ID:E-mail:
article id 7034, category Article
V. T. Aaltonen. (1920). Über die Ausbreitung und den Reichtum der Baumwurzeln in den Heidewäldern Lapplands. Acta Forestalia Fennica vol. 14 no. 1 article id 7034. https://doi.org/10.14214/aff.7034
English title: The distribution and abundance of the tree roots in the heathy forests on Lapland.

The study presents and describes the abundance and distribution of tree roots in specific stands of heathy forest types in Lapland. The data was collected in the Sodankylä commune.  

Due to the shortcomings in the data, conclusions can be drawn only regarding pine forests. The result of study states that the root competition plays an important role in the development of the forests, and most of the other observed phenomena are linked with root competition. The more infertile the soil the vertically and horizontally wider and more abundant the root system. It seems that the abundance of the root system is similar in forest of same fertility class and same density and age.      

  • Aaltonen, ORCID ID:E-mail:
article id 7545, category Article
Lalli Laine, Matti Nuorteva. (1970). Über die antagonistische Einwirkung der insektenpathogenen Pilze Beauveria bassiana (Bals.) Vuill. und B. tenella (Delacr.) Siem. auf den Wurzelschwamm (Fomes annosus (Fr.) Cooke). Acta Forestalia Fennica no. 111 article id 7545. https://doi.org/10.14214/aff.7545
English title: On the antagonistic influence of insect pathogenic fungi Beauveria bassiana (Bals.) Vuill. and B. tenella (Delacr.) Siem. on root rot disease spongy saprot (Fomes annosus (Fr.) Cooke).

The article presents the studies about antagonistic influence of insect pathogenic fungi Beauveria bassiana (Bals.) Vuill. and B. tenella (Delacr.) Siem. against root rot diseases. The experiments were conducted in laboratory where the fungi were grown in Petri dishes. The results show that these fungi are antagonistic with each other. The used stem of B. bassiana was proved as strongest antagonist against all studied F.annosus.

The PDF contains a summary in German. 

  • Laine, ORCID ID:E-mail:
  • Nuorteva, ORCID ID:E-mail:

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