Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2012
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Panu Oulasvirta Paul Eric Aspholm Marko Kangas Bjørn Mejdell Larsen Pirko-Lisa Luhta Patric Olofsson Jouni TaskinenAbstract
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Sydowia polyspora is a pathogenic, seed borne fungus on conifers [1]. It is especially troublesome in the Christmas tree industry, where it causes current season needle necrosis (CSNN) on fir (Abies spp.). Needles get chlorotic spots or bands and in severe cases the entire needles turn necrotic and shed. The fungus also commonly kills current year shoots (Sclerophoma shoot dieback) on both fir and spruce (Picea spp.). The latter we proved on subalpine fir (A. lasiocarpa) inoculated by S. polyspora from noble fir (Abies procera) seeds. Two conifer seed lots known from previous tests to contain a high percentage of S. polyspora were selected for a treatment experiment; alpine pine (Pinus mugo var. rotundata) and Noble fir. Both seed lots received the following five treatments; surface sterilized (10 sec. in 70 % ethanol plus 90 sec. in 0,5 % NaOCl), dipped in 15 % acidic acid, mixed with 0,36 gram Signum (boskalid and pyraklostrobin) per 100 gram seeds, mixed with 0,8 gram Mycostop (Streptomyces griseovirides) per 100 gram seeds, dipped in different concentrations of thyme oil (extracted from Thymus vulgaris), and control (no treatment). Based on the results we recommend Signum for conifer seed treatment. This fungicide controlled S. polyspora well and did not influence on the germination ability. Agricultural
Authors
Randi Berland Frøseth Anne Kjersti Bakken Marina Azzaroli Bleken Hugh Riley Kristian Thorup-Kristensen Sissel HansenAbstract
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Greet Ruysschaert Victoria Nelissen Romke Postma Markus J. Roedger Jim Hammond Henrik Hauggaard-Nielsen Adam O´Toole Pascal Boeckx W. Cornelis Rob Van HarenAbstract
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Margarita Novoa-Garrido Celine Rebours Ingunn Øvsthus Marte Meland Christian Guido Bruckner Pierrick Stevant Christian Uhlig Åsbjørn KarlsenAbstract
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Authors
Christian Guido Bruckner Charlotte Rehm Hans-Peter Grossart Peter, G. KrothAbstract
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