Abstract
Biomass from forestry is one of the largest components of Sweden's renewable resources. Poplars are currently the highest producing tree species available and are therefore natural choices for biomass-oriented production. Growing poplars has been of most interest on agricultural land, but the knowledge and experience about their cultivation is still limited. Factors that have a large impact on the regeneration results are plant material, competing vegetation, browsing and damage caused by voles or climatic factors. Due to large establishment costs, there is a need to find methods to secure the establishment both biologically and economically. In this study the effect of plastic mulch in combination with three different plant types (short cuttings, long cuttings and rooted plants) were tested at three different sites. Five years after planting, the overall effect of mulch was an improved plant survival and growth. In most cases, long cuttings outperformed short cuttings and rooted plants. Clonal differences were present, indicating the importance of using plant material adapted to site conditions. All sites were heavily affected by browsing and during the experimental period 100% of the plants were damaged at some point. Planting poplars without fencing is therefore doubtful. Results from this study conclude that poplars can be established with success on agricultural land if proper measures are used depending on the site to be planted.
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Claims 6
Claim · model-written summary
Mulch improved poplar survival and growth after five years.
- Treatment
- mulche0
- Outcome
- plant survival and growthe0
- Direction
- improvede0
- Qualifier
- Five years after plantinge0
PopulusNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“poplars”
e0“Five years after planting, the overall effect of mulch was an improved plant survival and growth.”
Claim · model-written summary
Long cuttings usually outperformed short cuttings and rooted plants.
- Treatment
- long cuttingse0
- Outcome
- outperformede0
- Direction
- outperformede0
- Comparator
- short cuttings and rooted plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“poplars”
e0“In most cases, long cuttings outperformed short cuttings and rooted plants.”
Claim · model-written summary
Poplar clones differed in establishment performance.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“poplars”
e0“Clonal differences were present, indicating the importance of using plant material adapted to site conditions.”
Claim · model-written summary
All experimental sites experienced browsing, and all plants were damaged at some point.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“poplars”
e0“All sites were heavily affected by browsing and during the experimental period 100% of the plants were damaged at some point.”
Claim · model-written summary
The authors question planting poplars without fencing.
- Outcome
- Planting poplars without fencinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“poplars”
e0“Planting poplars without fencing is therefore doubtful.”
Claim · model-written summary
Poplars can be established on agricultural land with site-appropriate measures.
- Outcome
- proper measures are used depending on the site to be plantede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“poplars can be established with success on agricultural land if proper measures are used depending on the site to be planted”
The same questions in other papers
mulching · growth · Populus (poplar)Positive and negative results
4 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
3 papers more in this group
See all 7 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.