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Production of genetically improved silver birch plantations in southern and central Sweden

Liziniewicz, Mateusz and Barbeito, Ignacio and Zvirgzdins, Andis and Stener, Lars-Goran and Niemisto, Pentti and Fahlvik, Nils and Johansson, Ulf and Karlsson, Bo and Nilsson, Urban (2022). Production of genetically improved silver birch plantations in southern and central Sweden. Silva Fennica. 56 :1 , 10512
[Research article]

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Abstract

Investing in planting genetically unproved silver birch (Betula pendula Roth) in Swedish plantations requires understanding how birch stands will develop over their entire rotation. Previous studies have indicated relatively low production of birch compared to Norway spruce (Picea abies (L.) Karst.) and Scots pine (Pinus sylvestris L.). This could result from using unrepresentative basic data, collected from unimproved, naturally-regenerated birch (Betula spp.) growing on inventory plots often located in coniferous stands. The objective of this study was to develop a basal area development function of improved silver birch and evaluate production over a full rotation period. We used data from 52 experiments including planted silver birch of different genetic breeding levels in southern and central Sweden. The experimental plots were established on fertile forest sites and on former agricultural lands, and were managed with different numbers of thinnings and basal area removal regimes. The model best describing total stand basal area development was a dynamic equation derived from the Korf base model. The analysis of the realized gain trial for birch showed a good stability of the early calculated relative differences in basal area between tested genotypes over time. Thus, the relative difference in basal area might be with cautious used as representation of the realized genetic gain. On average forest sites in southern Sweden, improved and planted silver birch could produce between 6-10.5 m(3) ha(-1) year(-1), while on fertile agriculture land the average productivity might be higher, especially with material coming from the improvement program. The performed analysis provided a first step toward predicting the effects of genetic improvement on total volume production and profitability of silver birch. However, more experiments arc needed to set up the relative differences between different improved material.

Authors/Creators:Liziniewicz, Mateusz and Barbeito, Ignacio and Zvirgzdins, Andis and Stener, Lars-Goran and Niemisto, Pentti and Fahlvik, Nils and Johansson, Ulf and Karlsson, Bo and Nilsson, Urban
Title:Production of genetically improved silver birch plantations in southern and central Sweden
Series Name/Journal:Silva Fennica
Year of publishing :2022
Volume:56
Number:1
Article number:10512
Number of Pages:20
Publisher:FINNISH SOC FOREST SCIENCE-NATURAL RESOURCES INST FINLAND
ISSN:0037-5330
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Share Alike 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Keywords:Betula pendula, generalized algebraic difference approach, genetic gain, planting, stand basal area starting function
URN:NBN:urn:nbn:se:slu:epsilon-p-116245
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-116245
Additional ID:
Type of IDID
DOI10.14214/sf.10512
Web of Science (WoS)000751462300006
ID Code:27248
Faculty:S - Faculty of Forest Sciences
Department:(S) > Southern Swedish Forest Research Centre
(S) > Unit for Field-based Forest Research
Deposited By: SLUpub Connector
Deposited On:03 Mar 2022 18:25
Metadata Last Modified:16 May 2022 15:05

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