Abstract
Abstract Plant growth was inhibited owing to excess or luxury consumption of nitrogen with relatively lower protein accumulation by continuous nitrate supply. However, nitrogen was the dominant nutrient, if the amount of nitrate supply was adequate. The uptake of cations, especially potassium, was dependent on that of nitrate. There was a close correlation between anions and cations uptake. Although the optimum ratio of sulfate ions to total anions was approximately 15%, the application at higher sulfate levels was effective for the control of plant growth. It seems that a nutrimental period corresponds with the developmental stage of plants. The requirement of phosphate ions was nearly the same as that of sulfate ions. However, phosphate promoted the functional transition from sink to source leaf at successive leaf position, whereas sulfate retarded such the transition. Phosphate or sulfate supply at higher levels inhibited the dry matter production in plants. From these results, the optimum ratio of nitrate:phosphate: Sulfate in nutrient solution was estimated to be 70:15:15% of total anions in chemical equivalent for vegetative growth. Key words: Nitrogen statusdevelopmental stageoptimal ratio of anionsmethod of systematic variation
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Claims 12
Claim · model-written summary
Continuous nitrate supply inhibited plant growth and yielded relatively lower protein accumulation.
Not reportedComparator
Verbatim
e0“Plant growth was inhibited owing to excess or luxury consumption of nitrogen with relatively lower protein accumulation by continuous nitrate supply”
Claim · model-written summary
Continuous nitrate supply produced relatively lower protein accumulation.
- Taxon
- Plante0
- Treatment
- continuous nitrate supplye0
- Outcome
- protein accumulatione0
- Direction
- relatively lowere0
Not reportedComparator
Verbatim
e0“Plant growth was inhibited owing to excess or luxury consumption of nitrogen with relatively lower protein accumulation by continuous nitrate supply”
Claim · model-written summary
Adequate nitrate supply made nitrogen the dominant nutrient.
Verbatim
e0“nitrogen was the dominant nutrient, if the amount of nitrate supply was adequate”
e1“Plant growth was inhibited”
Claim · model-written summary
Cation uptake depended on nitrate uptake, especially potassium.
Not reportedDirection
Verbatim
e0“The uptake of cations, especially potassium, was dependent on that of nitrate”
e1“Plant growth was inhibited”
Claim · model-written summary
Anion and cation uptake correlated closely.
Not reportedDirection
Verbatim
e0“There was a close correlation between anions and cations uptake”
e1“Plant growth was inhibited”
Claim · model-written summary
The optimum sulfate-to-total-anion ratio was approximately 15%.
Verbatim
e0“the optimum ratio of sulfate ions to total anions was approximately 15%”
e1“Plant growth was inhibited”
Claim · model-written summary
Higher sulfate application controlled plant growth.
Not reportedComparator
Verbatim
e0“the application at higher sulfate levels was effective for the control of plant growth”
e1“Plant growth was inhibited”
Claim · model-written summary
Plant nutritional period appeared to correspond with developmental stage.
- Taxon
- plantsViridiplantaee0
- Organ / stage
- developmental stagee0
- Outcome
- nutrimental periode0
Not reportedDirection
Verbatim
e0“It seems that a nutrimental period corresponds with the developmental stage of plants”
Claim · model-written summary
Phosphate requirement was nearly the same as sulfate requirement.
Verbatim
e0“The requirement of phosphate ions was nearly the same as that of sulfate ions”
e1“Plant growth was inhibited”
Claim · model-written summary
Phosphate promoted leaf transition from sink to source.
- Taxon
- Plante1
- Treatment
- phosphatee0
- Outcome
- functional transition from sink to source leafe0
- Direction
- promotede0
Not reportedComparator
Verbatim
e0“phosphate promoted the functional transition from sink to source leaf at successive leaf position”
e1“Plant growth was inhibited”
Claim · model-written summary
High phosphate or sulfate inhibited plant dry-matter production.
- Taxon
- plantsViridiplantaee0
- Treatment
- Phosphate or sulfate supply at higher levelse0
- Outcome
- dry matter productione0
- Direction
- inhibitede0
Not reportedComparator
Verbatim
e0“Phosphate or sulfate supply at higher levels inhibited the dry matter production in plants”
Claim · model-written summary
The estimated optimal nitrate:phosphate:sulfate ratio was 70:15:15% of total anions.
Verbatim
e0“the optimum ratio of nitrate:phosphate: Sulfate in nutrient solution was estimated to be 70:15:15% of total anions in chemical equivalent for vegetative growth”
e1“Plant growth was inhibited”
The same questions in other papers
sulfate · yield · Viridiplantae (plants)Positive and negative results
1 in the opposite direction
- positive
phosphorus · yield · Viridiplantae (plants)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.