Abstract
□ Data on combined effects of elevated carbon dioxide concentration (CO2) and phosphorus fertilization (P) on potato are scarce. Growth chamber studies (E1 and E2) that used three P and two CO2 levels were conducted. Leaf, stem, tuber, and stolon dry matter increased with P. Lateral-stem production was sensitive to P with a minimum 2.5-fold increase in mass. Leaf length increased an average 20.2% in E1 and 38.2% in E2 and leaf area increased an average 336% in E1 and 470% in E2 across CO2 levels. Tuber dry mass increased 22% in E1 and 38.2% in E2 in response to elevated CO2 and total dry mass by 14.1 and 15.4%. Tissue P contents increased with P but were unaffected by CO2. Effects of P on canopy branching were associated with plant N status. The studies suggest elevated CO2 levels are unlikely to alter potato P requirements on a unit mass basis.
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Claims 15
Claim · model-written summary
Phosphorus increased leaf, stem and stolon dry matter in potato.
- Taxon
- POTATO
Solanum tuberosumt0 - Treatment
- Pe0
- Outcome
- Leaf, steme0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf, stem, tuber, and stolon dry matter increased with P.”
t0“POTATO”
Claim · model-written summary
Phosphorus increased potato tuber dry matter.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- Pe0
- Outcome
- tubere0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf, stem, tuber, and stolon dry matter increased with P.”
t0“POTATO”
Claim · model-written summary
Phosphorus increased lateral stem mass at least 2.5 fold.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- Pe0
- Outcome
- Lateral-stem productione0
- Direction
- increasee0
- Value
- 2.5-folde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lateral-stem production was sensitive to P with a minimum 2.5-fold increase in mass.”
t0“POTATO”
Claim · model-written summary
Leaf length increased 20.2% in E1.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- CO2 levelse0
- Outcome
- Leaf lengthe0
- Direction
- increasede0
- Value
- 20.2%e0
- Qualifier
- E1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf length increased an average 20.2% in E1 and 38.2% in E2 and leaf area increased an average 336% in E1 and 470% in E2 across CO2 levels.”
t0“POTATO”
Claim · model-written summary
Leaf length increased 38.2% in E2.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- CO2 levelse0
- Outcome
- Leaf lengthe0
- Direction
- increasede0
- Value
- 38.2%e0
- Qualifier
- E2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf length increased an average 20.2% in E1 and 38.2% in E2 and leaf area increased an average 336% in E1 and 470% in E2 across CO2 levels.”
t0“POTATO”
Claim · model-written summary
Leaf area increased 336% in E1.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- CO2 levelse0
- Outcome
- leaf areae0
- Direction
- increasede0
- Value
- 336%e0
- Qualifier
- E1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf area increased an average 336% in E1 and 470% in E2 across CO2 levels.”
t0“POTATO”
Claim · model-written summary
Leaf area increased 470% in E2.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- CO2 levelse0
- Outcome
- leaf areae0
- Direction
- increasede0
- Value
- 470%e0
- Qualifier
- E2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf area increased an average 336% in E1 and 470% in E2 across CO2 levels.”
t0“POTATO”
Claim · model-written summary
Elevated carbon dioxide increased tuber dry mass 22% in E1.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- elevated CO2e0
- Outcome
- Tuber dry masse0
- Direction
- increasede0
- Value
- 22%e0
- Qualifier
- E1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tuber dry mass increased 22% in E1 and 38.2% in E2 in response to elevated CO2”
t0“POTATO”
Claim · model-written summary
Elevated carbon dioxide increased tuber dry mass 38.2% in E2.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- elevated CO2e0
- Outcome
- Tuber dry masse0
- Direction
- increasede0
- Value
- 38.2%e0
- Qualifier
- E2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tuber dry mass increased 22% in E1 and 38.2% in E2 in response to elevated CO2”
t0“POTATO”
Claim · model-written summary
Elevated carbon dioxide increased total dry mass 14.1% in E1.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- elevated CO2e0
- Outcome
- total dry masse0
- Direction
- increasede0
- Value
- 14.1e0
- Qualifier
- E1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tuber dry mass increased 22% in E1 and 38.2% in E2 in response to elevated CO2 and total dry mass by 14.1 and 15.4%.”
t0“POTATO”
Claim · model-written summary
Elevated carbon dioxide increased total dry mass 15.4% in E2.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- elevated CO2e0
- Outcome
- total dry masse0
- Direction
- increasede0
- Value
- 15.4%e0
- Qualifier
- E2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tuber dry mass increased 22% in E1 and 38.2% in E2 in response to elevated CO2 and total dry mass by 14.1 and 15.4%.”
t0“POTATO”
Claim · model-written summary
Tissue phosphorus content increased with phosphorus supply.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- Pe0
- Outcome
- Tissue P contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tissue P contents increased with P but were unaffected by CO2.”
t0“POTATO”
Claim · model-written summary
Carbon dioxide did not affect tissue phosphorus content.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- CO2e0
- Outcome
- Tissue P contentse0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tissue P contents increased with P but were unaffected by CO2.”
t0“POTATO”
Claim · model-written summary
The effect of phosphorus on canopy branching was associated with plant nitrogen status.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- Pe0
- Outcome
- canopy branchinge0
- Qualifier
- plant N statuse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effects of P on canopy branching were associated with plant N status.”
t0“POTATO”
Claim · model-written summary
The authors infer elevated carbon dioxide is unlikely to change potato phosphorus requirements per unit mass.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- elevated CO2 levelse0
- Outcome
- potato P requirements on a unit mass basise0
- Direction
- unlikely to altere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The studies suggest elevated CO2 levels are unlikely to alter potato P requirements on a unit mass basis.”
t0“POTATO”
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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.