Harvesting of short rotation coppice - harvesting trials with a cut and storage system in Germany
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Short rotation coppice (SRC) harvesting techniques are available in Germany, but broad experience and knowledge about machine performance and the related effective costs of harvesting operations are still missing. This information is crucial, as harvesting costs strongly influence the economic performance of the overall supply chain. Therefore, it was the aim of this study to collect and analyze productivity data of different harvesting systems for SRC. The combined cut and chip system on the one hand and the cut and storage system on the other hand were studied by literature review. Several studies analyze the combined cut and chip systems and the reported machine productivities showed great variations. The average was 30 green tons per scheduled machine hour (gt smh). Few studies are analysing the cut and storage system. They report that machines still are under development and that further research is needed. Therefore, time studies of harvesting operations using the cut and storage system were carried out. Five trials were performed with the harvesting machine “Stemster MK III” developed by Nordic Biomass. The share of productive working time was 85% and the average productivity was 21 gt smh. These results were compared with values from the literature. Resulting harvesting costs were calculated per oven dry ton (euros odt). The advantages and disadvantages of both harvesting systems are highlighted.–1–1–1
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Mainly two harvesting approaches have been developed for short rotation woody crops: the harvest-and-chip system and the harvest-and-storage system.
“Although different harvesting machines have already been developed, mainly two different harvesting approaches have been developed for short rotation woody crops (SRWCs), i.e. the harvest-and-chip system [14] and the harvest-and-storage system [15] (Fig. 1).”
Post-harvest chipping costs vary between 15 and 20 € odt−1 according to recent literature.
“According to recent literature [15,24], post-harvest chipping costs vary between 15 and 20 V odt À1”
Expected productivity is 35.6 Mg of fresh biomass per scheduled machine hour for the self-propelled cut-and-chip front harvester and 19 Mg for the harvest-and-storage system, with similar operational costs.
“The expected productivity is 35.6 Mg of fresh biomass per scheduled machine hour for the self-propelled cut-and-chip front harvester, and 19 Mg for the harvest-and-storage system, but with similar operational costs [14,15].”
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Sorted by citations
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- Authors
- Schweier, J., & Becker, G.
- Affiliations
- University of Freiburg (DE)
- ORCID
- Schweier, Janine
- Venue
- Silva Fennica
- Publisher
- Finnish Society of Forest Science
- Published
- 2012
- Volume
- 46
- Issue
- 2
- ISSN
- 0037-5330 (ISSN-L)
- 2242-4075
- OpenAlex
- W2031238599
- Cited by
- 52
- References
- 22
- Citations by year
- 2024: 3 · 2023: 1 · 2021: 4 · 2020: 3 · 2019: 3 · 2018: 2 · 2017: 8 · 2016: 4 · 2015: 10 · 2014: 8 · 2013: 5 · 2012: 1
- FWCI
- 10.14
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Silva Fennica (publishedVersion, cc-by-sa)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Bundesministerium für Bildung und Forschung
- Topics
- Physical Sciences › Engineering › Mechanics of Materials › Forest Biomass Utilization and Management
- Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Bioenergy crop production and management
- Physical Sciences › Engineering › Mechanical Engineering › Agricultural Engineering and Mechanization
- Keywords
- short rotation coppice, harvesting systems, harvesting productivity, harvesting costs, time study
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