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Acta Forestalia Fennica vol. 55 | 1947

Category: Article

article id 7391, category Article
V. Lihtonen. (1948). Tutkimuksia hakkuutoiminnan voimaperäisyyden tekijöistä ja tunnuksista pääasiallisesti valtion metsätaloudesta saadun aineiston valossa. Acta Forestalia Fennica vol. 55 no. 3 article id 7391. https://doi.org/10.14214/aff.7391
  • Lihtonen, ORCID ID:E-mail:
article id 7390, category Article
Onni Pohjakallio, Olli Vaartaja. (1948). Über Vorkommen und Sporenbildung von Coleosporium Melampyri Kleb. auf verschiedenen Standorten und Wirtspflanzen. Acta Forestalia Fennica vol. 55 no. 2 article id 7390. https://doi.org/10.14214/aff.7390
English title: Occurrence and spore production of Coleosporium melanpyri Kleb. (pine needle rust) on different sites and host plants.

Department of plant pathology of University of Helsinki conducted studies in the surrounding forests of Viikki test farm and on the Hyytiälä forest training station to find about occurrence and spore production of pine needle rust.

The damages have been minor. Most often the infection did not cause yellowing of the needles, only individual needles might have dried up. There were no dead young trees.

The spore production was strongest at the more fertile sites, with abundant occurrence of cow-wheat (Melanpyrum spp.). The infection caused more harm on the cow-wheat than on the pines. In many cases the foliage died prematurely. Melanpyrum spp. were more strongly infected on sites with more light. However, there was no difference found with the fertility of the site.

The PDF contains a summary in Finnish. 

  • Pohjakallio, ORCID ID:E-mail:
  • Vaartaja, ORCID ID:E-mail:
article id 7389, category Article
P. S. Tikka. (1947). Perä-Pohjolan kuusikoiden laadusta. Acta Forestalia Fennica vol. 55 no. 1 article id 7389. https://doi.org/10.14214/aff.7389
  • Tikka, ORCID ID:E-mail:

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