Helmer Belbo
Research Scientist
(+47) 970 78 239
helmer.belbo@nibio.no
Place
Steinkjer
Visiting address
Ogndalsveien 2, 7713 Steinkjer
Biography
Research interests cover forest operations and wood supply from stump to industry. Technical education in natural science disciplines; M.Sc. at NMBU (Ås, Norway), then a PhD in forest operations, more specifically forest biomass supply systems, at NIBIO / Linaeus University in Växjö.
Authors
Ishita Ahuja Arne Steffenrem Irena Fundova Helmer Belbo Torstein Myhre Inger Sundheim FløistadAbstract
When regenerating clearcut areas in Norway and several other countries, tree seedlings are planted adjacent to stumps of harvested trees to reduce snow load and provide shading, despite limited scientific evidence supporting this practice. This study investigated the role of tree-stumps as planting microsites in the establishment of Norway spruce (Picea abies (L.) Karst.) seedlings. We assessed the growth and survival of seedlings from two provenances: Undesløs seed orchard (60.7°, 140 m), consisting of tested parents from the lowland around 63–65°N, and seed collected from forests in the M4 provenance (64–65°N, 350–449 m), at two microsite types in Trøndelag County, Norway: beside stumps (Microsites-B) and at a distance from stumps (Microsites-D). Undesløs seedlings exhibited 100% survival at Microsites-B, whereas M4 seedlings showed higher survival at Microsites-D. Provenance had a significant effect on seedling height and diameter, while microsite type had no significant effect on these parameters. In 2022, significant differences in height and diameter were observed between provenances at Microsites-B. Phenotypic variations, including chlorotic, green, and brown needles, occurred in seedlings of both provenances across both microsite types. Overall, this single-site experiment provided no evidence that planting beside stumps improves growth/survival compared with planting at a distance away.
Abstract
Artikkelen tar for seg det økende problemet med rotråte i norsk granskog og spør om det er mulig å avle fram gran med bedre motstandskraft. Gjennom forskningsprosjektet Frisk Skog kombineres genetiske analyser, feltforsøk og data fra hogstmaskiner for å forstå variasjonen i råteresistens og utvikle mer presise verktøy for skogplanteforedling. Samtidig løftes praktiske råd for skogeiere, som bruk av Rotstop, skånsom drift og mer målrettet planting, som viktige tiltak for å redusere tap her og nå.
Authors
Helmer BelboAbstract
No abstract has been registered