Abstract
Subterranean clover plants of different phosphorus status, obtained from pastures or raised in the glass-house, were transferred to nutrient solutions. These included a complete solution, and others each lacking a different element. Subsequent response patterns were defined by leaf area changes. Plants raised at low phosphorus levels showed considerably smaller increases in leaf area in the solutions without phosphorus than in the other solutions. These differences were discernible as early as 2 days after transfer. There was little difference between the control treatments and treatments omitting elements other than phosphorus. Plants raised at a more adequate phosphorus level did not show differences between treatments till much later. The results are discussed, and their use as a basis for a simple method of determining the nutrient status of plants is indicated.
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Claims 5
Claim · model-written summary
Low-phosphorus clover had smaller leaf-area increases without phosphorus than in other solutions.
Verbatim
e0“Plants raised at low phosphorus levels showed considerably smaller increases in leaf area in the solutions without phosphorus than in the other solutions”
t0“plants”
Claim · model-written summary
The phosphorus omission difference was discernible two days after transfer.
- Taxon
- plantsViridiplantaet0
- Outcome
- differencese0
- Value
- 2 dayse0
Verbatim
e0“These differences were discernible as early as 2 days after transfer”
t0“plants”
Claim · model-written summary
Control treatments differed little from omissions of elements other than phosphorus.
Verbatim
e0“There was little difference between the control treatments and treatments omitting elements other than phosphorus”
t0“plants”
Claim · model-written summary
Plants raised with more adequate phosphorus showed treatment differences only much later.
- Taxon
- plantsViridiplantaet0
- Outcome
- did not show differences between treatments till much latere0
- Qualifier
- more adequate phosphorus levele0
Verbatim
e0“Plants raised at a more adequate phosphorus level did not show differences between treatments till much later”
t0“plants”
Claim · model-written summary
Leaf-area response to nutrient omission was proposed as a simple nutrient-status assessment method.
- Taxon
- plantsViridiplantaet0
- Outcome
- determining the nutrient status of plantse0
Not reportedComparatorValue
Verbatim
e0“their use as a basis for a simple method of determining the nutrient status of plants is indicated”
t0“plants”
The same questions in other papers
phosphorus · growth · Viridiplantae (plants)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- no effect
- positive
- positive
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.