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Effect of deployment-type on stem growth, biomass partitioning and crown characteristics of juvenile Sitka spruce clones
Author(s)
Date Issued
2017-01-31
Date Available
2017-04-28T12:10:04Z
Abstract
Competitive interactions in clonal forestry are not well understood and this needs to be addressed to develop better deployment strategies. Eight juvenile Sitka spruce (Picea sitchensis (Bong.) Carriére) clones were grown in monoclonal and clonal mixtures in a field experiment for three years to assess the effects of genetic diversity on shoot growth, above- and below-ground biomass partitioning and crown characteristics. Shoot elongation was measured throughout the growing season, while diameter was measured twice annually in May and December. After the third year, crown silhouette area was estimated from digitised images for one ramet per plot and ramets were then destructively harvested. Deployment × clone interactions were observed for tree height and diameter with reductions observed in mixed plots. Mixed plots had significantly greater height and diameter heterogeneity and more asymmetrical competition than monoclonal plots. Results from this study demonstrate that stem growth can be significantly altered when clones are planted in multi-clonal mixtures but for most clones, deployment-type will not significantly reduce their productivity.
Sponsorship
Department of Agriculture, Food and the Marine
Type of Material
Journal Article
Publisher
The Finnish Society of Forest Science
Journal
Silva Fennica
Volume
51
Issue
1
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
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Donnelly_et_al._deployment_Silva_Fennica_2017.pdf
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1.16 MB
Format
Owning collection
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0
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