Abstract
Summary Production of Vaccinium corymbosum L. is limited to acidic soils with high organic matter content. This specific soil requirement is limiting the possibilities to cultivate V. corymbosum L. in many regions of Central Europe. The aim of this study was to overcome the limiting production factors occurring under the soil and climate conditions of Switzerland: (1) evaluation of natural growing substrates without peat as required for organic production; (2) adjustment of the optimal pH in the growing substrate; (3) regulation of water issues (water quality and mulching) and (4) development of a suited planting system. Pine sawdust was evaluated to be the best alternative growing substrate compared to peat moss. Optimal pH adjustment in pine sawdust substrate was found to be 3.8 (CaCl 2 ) and 4.2 (H 2 O). In field cultivation, an amount of 30 g S year -1 plant -1 to lower the pH of the pine sawdust ditches was sufficient for good plant and yield development. This acidification resulted in better growth (+48%) and higher yield (+55%) when alkaline ground water (357 mg L -1 CaC0 3 ) was used for irrigation. Acidification with citric acid gave poor results. A mulch of pine bark on the sawdust ridge increased growth by 59% and yield by 25%. The newly developed flat ditch system with low sawdust ditches buried partly into the ground was as suitable as the standard planting system with deep ditches lined with plastic film. By integration and application of these new findings, a system for commercial organic blueberry production under Swiss conditions and on alkaline soils was developed.
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Claims 10
Claim · model-written summary
Pine sawdust was the best alternative growing substrate compared with peat moss for blueberry.
- Taxon
- Vaccinium corymbosum
Vaccinium corymbosume0 - Treatment
- Pine sawduste1
- Outcome
- alternative growing substratee1
- Direction
- beste1
- Comparator
- peat mosse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Production of Vaccinium corymbosum L. is limited to acidic soils with high organic matter content”
e1“Pine sawdust was evaluated to be the best alternative growing substrate compared to peat moss”
Claim · model-written summary
Optimal pH in pine sawdust substrate was 3.8 (CaCl 2) and 4.2 (H 2O).
- Taxon
- Vaccinium corymbosumVaccinium corymbosume0
- Outcome
- Optimal pH adjustment in pine sawdust substratee2
- Value
- 3.8 (CaCl 2 ) and 4.2 (H 2 O)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Production of Vaccinium corymbosum L. is limited to acidic soils with high organic matter content”
e2“Optimal pH adjustment in pine sawdust substrate was found to be 3.8 (CaCl 2 ) and 4.2 (H 2 O)”
Claim · model-written summary
An amount of 30 g S per plant per year lowering the pH of pine sawdust ditches was sufficient for good plant and yield development.
- Taxon
- Vaccinium corymbosumVaccinium corymbosume0
- Treatment
- an amount of 30 g S year -1 plant -1e3
- Outcome
- plant and yield developmente3
- Direction
- sufficiente3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Production of Vaccinium corymbosum L. is limited to acidic soils with high organic matter content”
e3“In field cultivation, an amount of 30 g S year -1 plant -1 to lower the pH of the pine sawdust ditches was sufficient for good plant and yield development”
Claim · model-written summary
Acidification with alkaline irrigation water increased blueberry growth by 48%.
- Taxon
- Vaccinium corymbosumVaccinium corymbosume0
- Treatment
- acidificatione4
- Outcome
- growthe4
- Direction
- bettere4
- Value
- +48%e4
- Qualifier
- alkaline ground water (357 mg L -1 CaC0 3 )e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Production of Vaccinium corymbosum L. is limited to acidic soils with high organic matter content”
e4“This acidification resulted in better growth (+48%) and higher yield (+55%) when alkaline ground water (357 mg L -1 CaC0 3 ) was used for irrigation”
Claim · model-written summary
Acidification with alkaline irrigation water increased blueberry yield by 55%.
- Taxon
- Vaccinium corymbosumVaccinium corymbosume0
- Treatment
- acidificatione4
- Outcome
- yielde4
- Direction
- highere4
- Value
- +55%e4
- Qualifier
- alkaline ground water (357 mg L -1 CaC0 3 )e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Production of Vaccinium corymbosum L. is limited to acidic soils with high organic matter content”
e4“This acidification resulted in better growth (+48%) and higher yield (+55%) when alkaline ground water (357 mg L -1 CaC0 3 ) was used for irrigation”
Claim · model-written summary
Acidification with citric acid gave poor results for blueberry.
- Taxon
- Vaccinium corymbosumVaccinium corymbosume0
- Treatment
- Acidification with citric acide5
- Outcome
- resultse5
- Direction
- poore5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Production of Vaccinium corymbosum L. is limited to acidic soils with high organic matter content”
e5“Acidification with citric acid gave poor results”
Claim · model-written summary
A pine bark mulch on the sawdust ridge increased blueberry growth by 59%.
- Taxon
- Vaccinium corymbosumVaccinium corymbosume0
- Treatment
- A mulch of pine bark on the sawdust ridgee6
- Outcome
- growthe6
- Direction
- increasede6
- Value
- 59%e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Production of Vaccinium corymbosum L. is limited to acidic soils with high organic matter content”
e6“A mulch of pine bark on the sawdust ridge increased growth by 59% and yield by 25%”
Claim · model-written summary
A pine bark mulch on the sawdust ridge increased blueberry yield by 25%.
- Taxon
- Vaccinium corymbosumVaccinium corymbosume0
- Treatment
- A mulch of pine bark on the sawdust ridgee6
- Outcome
- yielde6
- Direction
- increasede6
- Value
- 25%e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Production of Vaccinium corymbosum L. is limited to acidic soils with high organic matter content”
e6“A mulch of pine bark on the sawdust ridge increased growth by 59% and yield by 25%”
Claim · model-written summary
The flat ditch system with low sawdust ditches was as suitable for blueberry as the standard deep-ditch planting system.
- Taxon
- Vaccinium corymbosumVaccinium corymbosume0
- Treatment
- flat ditch system with low sawdust ditches buried partly into the grounde7
- Outcome
- suitablee7
- Direction
- as suitablee7
- Comparator
- standard planting system with deep ditches lined with plastic filme7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Production of Vaccinium corymbosum L. is limited to acidic soils with high organic matter content”
e7“The newly developed flat ditch system with low sawdust ditches buried partly into the ground was as suitable as the standard planting system with deep ditches lined with plastic film”
Claim · model-written summary
A system for commercial organic blueberry production under Swiss conditions and on alkaline soils was developed.
- Taxon
- Vaccinium corymbosumVaccinium corymbosume0
- Outcome
- a system for commercial organic blueberry productione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Production of Vaccinium corymbosum L. is limited to acidic soils with high organic matter content”
e2“a system for commercial organic blueberry production under Swiss conditions and on alkaline soils was developed”
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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.