Abstract
A study was begun in 1980 in a 4-year-old planting of P. nigra var. betulifolia x P. trichocarpa to identify the effects of harvesting season on-coppice production. Parts of the plantation were harvested monthly from October 1980 to September 1981. The trees were cut leaving 10 and 30 cm (4 and 12 in) stumps. Coppice measurements were taken 1 year after harvest. Harvesting during the leafless season (October to mid May) positively affected (a) stump survival, (b) height and d.b.h, growth of dominant sprouts, and (c) number of live sprouts/stump taller than 1.37m. Harvesting during the growing season discouraged coppicing. Stump height had no effect on stump survival or growth of dominant sprouts. However, stump height positively affected number of sprouts/stump. Therefore, to concentrate growth on a few sprouts, the stumps should be kept short. The 10 cm (4 in) stumps proved adequate.
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Claims 7
Claim · model-written summary
Leafless-season harvest improved stump survival.
- Treatment
- Harvesting during the leafless season (October to mid May)e0
- Outcome
- stump survivale0
- Direction
- positively affectede0
PopulusNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Harvesting during the leafless season (October to mid May) positively affected (a) stump survival”
t0“hybrid poplar coppicing”
Claim · model-written summary
Leafless-season harvest improved dominant sprout height and diameter growth.
- Treatment
- Harvesting during the leafless season (October to mid May)e0
- Outcome
- height and d.b.h, growth of dominant sproutse0
- Direction
- positively affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Harvesting during the leafless season (October to mid May) positively affected (a) stump survival, (b) height and d.b.h, growth of dominant sprouts”
t0“hybrid poplar coppicing”
Claim · model-written summary
Leafless-season harvest increased the number of live sprouts per stump taller than 1.37m.
- Treatment
- Harvesting during the leafless season (October to mid May)e0
- Outcome
- number of live sprouts/stump taller than 1.37me0
- Direction
- positively affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Harvesting during the leafless season (October to mid May) positively affected (a) stump survival, (b) height and d.b.h, growth of dominant sprouts, and (c) number of live sprouts/stump taller than 1.37m”
t0“hybrid poplar coppicing”
Claim · model-written summary
Growing-season harvest discouraged coppicing.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Harvesting during the growing season discouraged coppicing.”
t0“hybrid poplar coppicing”
Claim · model-written summary
Stump height did not affect stump survival or dominant sprout growth.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stump height had no effect on stump survival or growth of dominant sprouts.”
t0“hybrid poplar coppicing”
Claim · model-written summary
Stump height increased the number of sprouts per stump.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stump height positively affected number of sprouts/stump.”
t0“hybrid poplar coppicing”
Claim · model-written summary
The authors recommend short stumps to concentrate growth on a few sprouts.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to concentrate growth on a few sprouts, the stumps should be kept short. The 10 cm (4 in) stumps proved adequate.”
t0“hybrid poplar coppicing”
The same questions in other papers
climate site · growth · Populus (poplar)Positive and negative results
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- negative
- positive
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1 paper more in this group
See all 5 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.