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Silva Fennica 1926-1997
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Articles by Risto Jalkanen

Category : Article

article id 5402, category Article
Risto Jalkanen, Juha Kaitera. (1994). Gremmeniella abietina produces pycnidia in cankers of living shoots with green needles on Scots pine. Silva Fennica vol. 28 no. 2 article id 5402. https://doi.org/10.14214/sf.a9168
Keywords: Pinus sylvestris; Gremmeniella abietina; disease resistance; lifecycle; pycnidia
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article id 5397, category Article
Juha Kaitera, Risto Jalkanen. (1984). Old and fresh Gremmeniella abietina damage on Scots pine in eastern Lapland in 1992. Silva Fennica vol. 28 no. 2 article id 5397. https://doi.org/10.14214/sf.a9166
Keywords: Pinus sylvestris; Gremmeniella abietina; shoots; fungal damage; assessment; plant diseases
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article id 5211, category Article
Risto Jalkanen, Esko Jalkanen, Jyrki Jalkanen, Marja Jalkanen. (1984). Maanpinnan rikkomisen 10-vuotisvaikutus korvasienisatoon. Silva Fennica vol. 18 no. 2 article id 5211. https://doi.org/10.14214/sf.a15390
English title: Ten-year effects of breaking the soil surface on the yield of Gyromitra esculenta.
Original keywords: korvasieni; sienisato; maankäsittely; kivennäismaa
English keywords: yield; soil preparation; mushrooms; Gyromitra esculenta; false morel; fruit bodies
Abstract | View details | Full text in PDF | Author Info
article id 5131, category Article
Risto Jalkanen, Satu Huttunen, Teija Väisänen. (1981). The wax structure of the developing needles of Pinus sylvestris progenies infected by Lophodermella sulcigena. Silva Fennica vol. 15 no. 4 article id 5131. https://doi.org/10.14214/sf.a15188
Keywords: Pinus sylvestris; Scots pine; disease resistance; pathogens; Lophodermella sulcigena; progenies; needle structure; stomatal cavity
Abstract | View details | Full text in PDF | Author Info

Category : Research article

article id 10420, category Research article
Eeva-Liisa Terhonen, Jumoke Babalola, Risto Kasanen, Risto Jalkanen, Kathrin Blumenstein. (2021). Sphaeropsis sapinea found as symptomless endophyte in Finland. Silva Fennica vol. 55 no. 1 article id 10420. https://doi.org/10.14214/sf.10420
Keywords: Pinus sylvestris; Scots pine; Diplodia sapinea; Diplodia tip blight
Highlights: Sphaeropsis sapinea was found for the first time as an endophyte in healthy Scots pine in Finland; This finding confirms that S. sapinea can proliferate in a symptomless stage in Scots pine in Finland.
Abstract | Full text in HTML | Full text in PDF | Author Info
article id 104, category Research article
Eeva Terhonen, Teresa Marco, Hui Sun, Risto Jalkanen, Risto Kasanen, Martti Vuorinen, Fred Asiegbu. (2011). The effect of latitude, season and needle-age on the mycota of Scots pine (Pinus sylvestris) in Finland. Silva Fennica vol. 45 no. 3 article id 104. https://doi.org/10.14214/sf.104
Keywords: Pinus sylvestris; needles; harsh environment; mycota; needle age; cryptic lifecycle; Hormonema dematioides
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article id 169, category Research article
Susanne von Bargen, Elise Grubits, Risto Jalkanen, Carmen Büttner. (2009). Cherry leaf roll virus – an emerging virus in Finland? Silva Fennica vol. 43 no. 5 article id 169. https://doi.org/10.14214/sf.169
Keywords: Betula pendula; Betula pubescens; Betula nana; IC-RT-PCR; 3' non-coding region; CLRV; phylogenetic relationship
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article id 235, category Research article
Ari Nikula, Ville Hallikainen, Risto Jalkanen, Mikko Hyppönen, Kari Mäkitalo. (2008). Modelling the factors predisposing Scots pine to moose damage in artificially regenerated sapling stands in Finnish Lapland. Silva Fennica vol. 42 no. 4 article id 235. https://doi.org/10.14214/sf.235
Keywords: Pinus sylvestris; boreal forest; forestry; Alces alces; damage; modelling
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article id 230, category Research article
Risto Jalkanen, Sheila Hicks, Tarmo Aalto, Hannu Salminen. (2008). Past pollen production reconstructed from needle production in Pinus sylvestris at the northern timberline: a tool for evaluating palaeoclimate reconstructions. Silva Fennica vol. 42 no. 4 article id 230. https://doi.org/10.14214/sf.230
Keywords: Scots pine; age-depth chronology; annual resolution; needle trace method; NTM; pollen accumulation rate; temperature reconstruction; tree line
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article id 271, category Research article
Patrick Insinna, Risto Jalkanen, Bernhard Götz. (2007). Climate impact on 100-year foliage chronologies of Scots pine and Ponderosa pine in the northeast lowlands of Brandenburg, Germany. Silva Fennica vol. 41 no. 4 article id 271. https://doi.org/10.14214/sf.271
Keywords: Scots pine; needle trace method; climate impact; foliage parameters; Ponderosa pine
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article id 337, category Research article
Hannu Salminen, Risto Jalkanen. (2006). Modelling variation of needle density of Scots pine at high latitudes. Silva Fennica vol. 40 no. 2 article id 337. https://doi.org/10.14214/sf.337
Keywords: Pinus sylvestris; needles; dendroclimatology; NTM; precipitation; temperature; fascicles
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article id 362, category Research article
Hannu Salminen, Risto Jalkanen. (2005). Modelling the effect of temperature on height increment of Scots pine at high latitudes. Silva Fennica vol. 39 no. 4 article id 362. https://doi.org/10.14214/sf.362
Keywords: Pinus sylvestris; height growth; dendroclimatology; precipitation; temperature
Abstract | View details | Full text in PDF | Author Info
article id 360, category Research article
Timo Kurkela, Tarmo Aalto, Martti Varama, Risto Jalkanen. (2005). Defoliation by the common pine sawfly (Diprion pini) and subsequent growth reduction in Scots pine: a retrospective approach. Silva Fennica vol. 39 no. 4 article id 360. https://doi.org/10.14214/sf.360
Keywords: height growth; NTM; defoliation; insect attack; needle density; needle production; needle retention; radial growth; herbivory
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article id 426, category Research article
Uwe Schmitt, Risto Jalkanen, Dieter Eckstein. (2004). Cambium dynamics of Pinus sylvestris and Betula spp. in the northern boreal forest in Finland. Silva Fennica vol. 38 no. 2 article id 426. https://doi.org/10.14214/sf.426
Keywords: birch; boreal forest; Scots pine; cambium dynamics; wood formation; pinning technique; light microscopy
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article id 654, category Research article
Margus Pensa, Risto Jalkanen. (1999). Needle chronologies on Pinus sylvestris in northern Estonia and southern Finland. Silva Fennica vol. 33 no. 3 article id 654. https://doi.org/10.14214/sf.654
Keywords: needle age; needle trace method; needle retention; crown thinning; needle loss; shedding
Abstract | View details | Full text in PDF | Author Info

Category : Research note

article id 927, category Research note
Risto Jalkanen, Carmen Büttner, Susanne von Bargen. (2007). Cherry leaf roll virus abundant on Betula pubescens in Finland. Silva Fennica vol. 41 no. 4 article id 927. https://doi.org/10.14214/sf.927
Keywords: Betula pendula; Betula nana; Betula pubescens subsp. czerepanovii; virology
Abstract | View details | Full text in PDF | Author Info

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