Abstract
The effects of altered moisture conditions on seedling emergence and establishment after direct seeding of Pinus sylvestris L. were studied for two seed‐lots in a field experiment. Seedling emergence and establishment were expressed as a percentage of seeded germinable seeds. Moisture conditions were altered by using rain shelters in combination with different site preparation methods with and without microsite preparation. When removal of the organic mat was used as a site preparation method, seedling emergence was 42.3% without rain shelters and 34.1% with rain shelters. For the same site preparation method, seedling emergence was 55.3% with microsite preparation and 21.4% without. When the ground organic mat was left on the soil the average seedling emergence was 29.4%. Grinding of the organic mat resulted in seedling emergence as good as removal of the organic mat, only in the absence of rain shelters and with microsite preparation. Irrespective of rain shelter or microsite preparation treatment, the site preparation method with the organic mat inverted in the seedbed resulted in almost no seedling emergence. Germination of wintering seeds during the second growing season was evident mainly in spots with ground organic material. In conclusion it seems that seedling emergence is dependent on the availability of capillary soil water.
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Claims 9
Claim · model-written summary
With removal of the organic mat and no rain shelters, Pinus sylvestris seedling emergence was 42.3%.
- Taxon
- Pinus sylvestris
Pinus sylvestrist0 - Treatment
- removal of the organic mate0
- Outcome
- seedling emergencee0
- Value
- 42.3%e0
- Qualifier
- without rain shelterse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When removal of the organic mat was used as a site preparation method, seedling emergence was 42.3% without rain shelters and 34.1% with rain shelters”
t0“Pinus sylvestris”
Claim · model-written summary
With removal of the organic mat, rain shelters were associated with lower Pinus sylvestris seedling emergence (34.1%) than no rain shelters.
- Taxon
- Pinus sylvestrisPinus sylvestrist0
- Treatment
- with rain shelterse0
- Outcome
- seedling emergencee0
- Direction
- lowerinferrede0
- Value
- 34.1%e0
- Comparator
- without rain shelterse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When removal of the organic mat was used as a site preparation method, seedling emergence was 42.3% without rain shelters and 34.1% with rain shelters”
t0“Pinus sylvestris”
Claim · model-written summary
With the same site preparation, microsite preparation gave higher seedling emergence (55.3%) than none.
- Taxon
- Pinus sylvestrisPinus sylvestrist0
- Treatment
- with microsite preparatione0
- Outcome
- seedling emergencee0
- Direction
- higherinferrede0
- Value
- 55.3%e0
- Comparator
- withoute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For the same site preparation method, seedling emergence was 55.3% with microsite preparation and 21.4% without”
t0“Pinus sylvestris”
Claim · model-written summary
Without microsite preparation, seedling emergence was 21.4%.
- Taxon
- Pinus sylvestrisPinus sylvestrist0
- Outcome
- seedling emergencee0
- Value
- 21.4%e0
- Qualifier
- withoute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For the same site preparation method, seedling emergence was 55.3% with microsite preparation and 21.4% without”
t0“Pinus sylvestris”
Claim · model-written summary
When the ground organic mat was left on the soil, average seedling emergence was 29.4%.
- Taxon
- Pinus sylvestrisPinus sylvestrist0
- Treatment
- ground organic mat was left on the soile0
- Outcome
- average seedling emergencee0
- Value
- 29.4%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the ground organic mat was left on the soil the average seedling emergence was 29.4%”
t0“Pinus sylvestris”
Claim · model-written summary
Grinding of the organic mat gave seedling emergence as good as removal of the mat only in the absence of rain shelters and with microsite preparation.
- Taxon
- Pinus sylvestrisPinus sylvestrist0
- Treatment
- Grinding of the organic mate0
- Outcome
- seedling emergencee0
- Direction
- as good ase0
- Qualifier
- only in the absence of rain shelters and with microsite preparatione0
- Comparator
- removal of the organic mate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grinding of the organic mat resulted in seedling emergence as good as removal of the organic mat, only in the absence of rain shelters and with microsite preparation”
t0“Pinus sylvestris”
Claim · model-written summary
Site preparation with the organic mat inverted in the seedbed resulted in almost no seedling emergence.
- Taxon
- Pinus sylvestrisPinus sylvestrist0
- Treatment
- organic mat inverted in the seedbede0
- Outcome
- seedling emergencee0
- Direction
- almost noe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the site preparation method with the organic mat inverted in the seedbed resulted in almost no seedling emergence”
t0“Pinus sylvestris”
Claim · model-written summary
Germination of wintering seeds during the second growing season was mainly in spots with ground organic material.
- Taxon
- Pinus sylvestrisPinus sylvestrist0
- Outcome
- Germination of wintering seedse0
- Setting
- spots with ground organic materiale0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Germination of wintering seeds during the second growing season was evident mainly in spots with ground organic material”
t0“Pinus sylvestris”
Claim · model-written summary
The authors conclude that seedling emergence depends on the availability of capillary soil water.
- Taxon
- Pinus sylvestrisPinus sylvestrist0
- Outcome
- seedling emergencee0
- Qualifier
- availability of capillary soil watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedling emergence is dependent on the availability of capillary soil water”
t0“Pinus sylvestris”
The same questions in other papers
rainfall · growth · Pinus sylvestris (Scots pine)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
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.