Abstract
SUMMARY In a study of the mineral nutrition of flooded gum E. grandis Hill ex Maiden in a controlled environment, it was noted that anthocyanin colouration of the upper leaf surface resulted from phosphorus deficiency. Increase in phosphorus supply with other nutrient elements supplied at constant levels resulted in (1) an increase in seedling dry-weight and stem-leaf ratio, and a decrease in root-shoot ratio, and (2) a general increase in tissue concentration of nitrogen, phosphorus and potassium, a general decrease in tissue concentration of calcium, but no change in tissue concentration of magnesium. A foliage phosphorus concentration of 0.11 per cent was found to be the critical level for near-optimal seedling dry-weight production. The levels of various nutrient elements, nitrogen, phosphorus, potassium, calcium and magnesium, differed with respect to the tissues (foliage, stem or roots) in which they were most concentrated.
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Claims 9
Claim · model-written summary
Phosphorus deficiency produced anthocyanin coloration on the upper leaf surface.
- Taxon
- E. grandis Hill ex Maidene0
- Organ / stage
- upper leaf surfacee0
- Treatment
- phosphorus deficiencye0
- Outcome
- anthocyanin colouratione0
- Setting
- controlled environmente0
Not reportedComparatorDirection
Verbatim
e0“In a study of the mineral nutrition of flooded gum E. grandis Hill ex Maiden in a controlled environment, it was noted that anthocyanin colouration of the upper leaf surface resulted from phosphorus deficiency.”
Claim · model-written summary
Increasing phosphorus supply increased seedling dry weight and stem-leaf ratio.
- Taxon
- E. grandis Hill ex Maidene1
- Treatment
- Increase in phosphorus supplye0
- Outcome
- seedling dry-weight and stem-leaf ratioe0
- Direction
- increasee0
- Qualifier
- other nutrient elements supplied at constant levelse0
- Setting
- controlled environmente1
Not reportedComparator
Verbatim
e0“Increase in phosphorus supply with other nutrient elements supplied at constant levels resulted in (1) an increase in seedling dry-weight and stem-leaf ratio, and a decrease in root-shoot ratio”
e1“flooded gum E. grandis Hill ex Maiden in a controlled environment”
Claim · model-written summary
Increasing phosphorus supply decreased root-shoot ratio.
- Taxon
- E. grandis Hill ex Maidene1
- Treatment
- Increase in phosphorus supplye0
- Outcome
- root-shoot ratioe0
- Direction
- decreasee0
- Setting
- controlled environmente1
Not reportedComparator
Verbatim
e0“Increase in phosphorus supply with other nutrient elements supplied at constant levels resulted in (1) an increase in seedling dry-weight and stem-leaf ratio, and a decrease in root-shoot ratio”
e1“flooded gum E. grandis Hill ex Maiden in a controlled environment”
Claim · model-written summary
Increasing phosphorus supply generally increased tissue nitrogen, phosphorus and potassium concentrations.
- Taxon
- E. grandis Hill ex Maidene2
- Treatment
- Increase in phosphorus supplye1
- Outcome
- tissue concentration of nitrogen, phosphorus and potassiume0
- Direction
- increasee0
- Qualifier
- generale0
- Setting
- controlled environmente2
Not reportedComparator
Verbatim
e0“a general increase in tissue concentration of nitrogen, phosphorus and potassium”
e1“Increase in phosphorus supply with other nutrient elements supplied at constant levels”
e2“flooded gum E. grandis Hill ex Maiden in a controlled environment”
Claim · model-written summary
Increasing phosphorus supply generally decreased tissue calcium concentration.
- Taxon
- E. grandis Hill ex Maidene2
- Treatment
- Increase in phosphorus supplye1
- Outcome
- tissue concentration of calciume0
- Direction
- decreasee0
- Setting
- controlled environmente2
Not reportedComparator
Verbatim
e0“a general decrease in tissue concentration of calcium”
e1“Increase in phosphorus supply with other nutrient elements supplied at constant levels”
e2“flooded gum E. grandis Hill ex Maiden in a controlled environment”
Claim · model-written summary
Increasing phosphorus supply did not change tissue magnesium concentration.
- Taxon
- E. grandis Hill ex Maidene2
- Treatment
- Increase in phosphorus supplye1
- Outcome
- tissue concentration of magnesiume0
- Direction
- no changee0
- Setting
- controlled environmente2
Not reportedComparator
Verbatim
e0“no change in tissue concentration of magnesium”
e1“Increase in phosphorus supply with other nutrient elements supplied at constant levels”
e2“flooded gum E. grandis Hill ex Maiden in a controlled environment”
Claim · model-written summary
Foliage phosphorus concentration of 0.11 per cent was critical for near-optimal seedling dry-weight production.
- Taxon
- E. grandis Hill ex Maidene1
- Outcome
- foliage phosphorus concentratione0
- Value
- 0.11 per cente0
- Qualifier
- critical level for near-optimal seedling dry-weight productione0
Not reportedDirection
Verbatim
e0“A foliage phosphorus concentration of 0.11 per cent was found to be the critical level for near-optimal seedling dry-weight production.”
e1“E. grandis Hill ex Maiden”
Claim · model-written summary
Nitrogen, phosphorus and potassium differed in the tissues where their concentrations were greatest.
Verbatim
e0“The levels of various nutrient elements, nitrogen, phosphorus, potassium, calcium and magnesium, differed with respect to the tissues (foliage, stem or roots) in which they were most concentrated.”
e1“E. grandis Hill ex Maiden”
Claim · model-written summary
Calcium and magnesium differed in the tissues where their concentrations were greatest.
Verbatim
e0“The levels of various nutrient elements, nitrogen, phosphorus, potassium, calcium and magnesium, differed with respect to the tissues (foliage, stem or roots) in which they were most concentrated.”
e1“E. grandis Hill ex Maiden”
The same questions in other papers
phosphorus · molecular: metabolites · Eucalyptus grandis (rose gum)Positive and negative results
1 in the opposite direction
- positive
phosphorus · growth · Eucalyptus grandis (rose gum)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.