Current issue: 54(1)

Under compilation: 54(2)

Impact factor 1.683
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Silva Fennica 1926-1997
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Acta Forestalia Fennica
1953-1968
1933-1952
1913-1932

Articles containing the keyword 'Prunus padus'.

Category: Article

article id 7334, category Article
T. J. Hintikka. (1937). Über die Verbänderungen und Hexenbesen an der Traubenkirsche (Prunus Padus L.). Acta Forestalia Fennica vol. 45 no. 2 article id 7334. https://doi.org/10.14214/aff.7334
English title: On fasciations and witches‘ brooms on (European) bird cherry trees (Prunus padus L.).

The article presents six fasciations found in Finland on bird cherry trees. Based on the literature it seems that fasciations are the precondition for witches’ brooms. The witches’ brooms on bird cherry trees are rare, but they have been mentioned in literature. Some views on their occurrence and development are represented. Also the possible causes behind the developments are discussed based on literature.  

The PDF contains a summary in Finnish.  

  • Hintikka, ORCID ID:E-mail:
article id 7334, category Article
T. J. Hintikka. (1937). Über die Verbänderungen und Hexenbesen an der Traubenkirsche (Prunus Padus L.). Acta Forestalia Fennica vol. 45 no. 2 article id 7334. https://doi.org/10.14214/aff.7334
English title: On fasciations and witches‘ brooms on (European) bird cherry trees (Prunus padus L.).

The article presents six fasciations found in Finland on bird cherry trees. Based on the literature it seems that fasciations are the precondition for witches’ brooms. The witches’ brooms on bird cherry trees are rare, but they have been mentioned in literature. Some views on their occurrence and development are represented. Also the possible causes behind the developments are discussed based on literature.  

The PDF contains a summary in Finnish.  

  • Hintikka, ORCID ID:E-mail:
article id 4738, category Article
Sakari Lilja. (1967). Tuomen merkityksestä kuusen tuomiruostesienen, Pucciniastrum padi (Kunze & Schm.) Diet., esiintymiselle kuusessa. Silva Fennica vol. 1 no. 1 article id 4738. https://doi.org/10.14214/sf.a14448
English title: Significance of the bird-cherry (Prunus padus L.) for the occurrence of the rust, Puccinastrum padi (Kunze & Schm.) in spruce.

The present study deals with the occurrence of the rust, Pucciniastrum padi (Kunze & Schm.) Diet., in the shoots and cones of Norway spruce (Picea abies (L.) H. Karst.) in the forest area of the training and experimental farm of Helsinki University at Viikki (60’10’ N; 25’ E). The most important task was to clarify the correlation between the occurrences of the disease in spruce and the abundance of the alternative host of the disease, bird-sherry (Prunus padus L.).

Infected shoots were encountered in a 17-year-old planted seedling stand of spruce. In this stand 8.4% of the seedlings were infected. The density of bird-cherry trees was in the stand higher than in the surrounding areas. The number of infected shoots was the greatest in those places where the density of bird-cherries was highest and already at a distance of some ten metres form the bird-cherry stands the degree of infection decreased considerably. The portion of infected cones in the whole material of this study was 19.5%.

The dependence of the frequency of disease on the abundance of bird-cherries at different distances from the spruce stand was studied by means of regression analysis. For this reason, the percentage infected cones were determined by sample plots and the abundance of bird-cherry trees from six zones (0–50, 50–100, 100–150, 150–200, 200–300, and 300–500 m) around each sample plot. The results showed that the dependence between the degree of infection of cones and the abundance of bird-cherry in the surroundings only reached the closest zone. There were also infected cones at greater distance, for instance, 200–300 m from the bird-cherries about 10% of the cones could be infected. Both the infected cones and shoots were longer than the healthy ones.

The PDF includes a summary in English.

  • Lilja, ORCID ID:E-mail:

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