Abstract
contents and the superoxide radical production rate in the leaves of pakchoi were decreased, with the highest reduction occurred in ammonium and urea treatments. Cd concentrations in the leaves of pakchoi fertilized with ammonium, ammonium/nitrate, and urea were lowered by 58.3%, 34.0%, and 44.5% and those in the petioles were lowered by 61.8%, 29.4%, and 55.6%, respectively. Cd concentration in the leaves and petioles of pakchoi in the nitrate treatment did not differ significantly from control. These changes could be attributable to the reduction in the acidification of rhizosphere soil in response to the combined application of N fertilizer and DCD. Accordingly, in Cd-contaminated soils with a low buffering capacity, the application of DCD combined with ammonium, ammonium/nitrate, or urea N fertili-zers could alleviate Cd-induced growth stress and inhibit photosynthesis in pakchoi plants and effectively minimize the Cd accumulation.
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Claims 8
Claim · model-written summary
Dicyandiamide with ammonium or urea decreased the superoxide radical production rate in pakchoi leaves, with the highest reduction in ammonium and urea treatments.
- Taxon
- pakchoie1
- Treatment
- ammonium and urea treatmentse1
- Outcome
- superoxide radical production ratee1
- Direction
- decreasede1
Not reportedComparator
Verbatim
e1“contents and the superoxide radical production rate in the leaves of pakchoi were decreased, with the highest reduction occurred in ammonium and urea treatments”
Claim · model-written summary
Ammonium fertilization lowered Cd concentration in pakchoi leaves by 58.3%.
- Taxon
- pakchoie2
- Organ / stage
- leavese2
- Treatment
- ammoniume2
- Outcome
- Cd concentrationse2
- Direction
- lowerede2
- Value
- 58.3%e2
Not reportedComparator
Verbatim
e2“Cd concentrations in the leaves of pakchoi fertilized with ammonium, ammonium/nitrate, and urea were lowered by 58.3%, 34.0%, and 44.5% and those in the petioles were lowered by 61.8%, 29.4%, and 55.6%, respectively”
Claim · model-written summary
Ammonium/nitrate fertilization lowered Cd concentration in pakchoi leaves by 34.0%.
- Taxon
- pakchoie2
- Organ / stage
- leavese2
- Treatment
- ammonium/nitratee2
- Outcome
- Cd concentrationse2
- Direction
- lowerede2
- Value
- 34.0%e2
Not reportedComparator
Verbatim
e2“Cd concentrations in the leaves of pakchoi fertilized with ammonium, ammonium/nitrate, and urea were lowered by 58.3%, 34.0%, and 44.5% and those in the petioles were lowered by 61.8%, 29.4%, and 55.6%, respectively”
Claim · model-written summary
Urea fertilization lowered Cd concentration in pakchoi leaves by 44.5%.
- Taxon
- pakchoie2
- Organ / stage
- leavese2
- Treatment
- ureae2
- Outcome
- Cd concentrationse2
- Direction
- lowerede2
- Value
- 44.5%e2
Not reportedComparator
Verbatim
e2“Cd concentrations in the leaves of pakchoi fertilized with ammonium, ammonium/nitrate, and urea were lowered by 58.3%, 34.0%, and 44.5% and those in the petioles were lowered by 61.8%, 29.4%, and 55.6%, respectively”
Claim · model-written summary
Ammonium fertilization lowered Cd concentration in pakchoi petioles by 61.8%.
- Taxon
- pakchoie2
- Organ / stage
- petiolese2
- Treatment
- ammoniume2
- Outcome
- Cd concentrationse2
- Direction
- lowerede2
- Value
- 61.8%e2
Not reportedComparator
Verbatim
e2“Cd concentrations in the leaves of pakchoi fertilized with ammonium, ammonium/nitrate, and urea were lowered by 58.3%, 34.0%, and 44.5% and those in the petioles were lowered by 61.8%, 29.4%, and 55.6%, respectively”
Claim · model-written summary
Ammonium/nitrate fertilization lowered Cd concentration in pakchoi petioles by 29.4%.
- Taxon
- pakchoie2
- Organ / stage
- petiolese2
- Treatment
- ammonium/nitratee2
- Outcome
- Cd concentrationse2
- Direction
- lowerede2
- Value
- 29.4%e2
Not reportedComparator
Verbatim
e2“Cd concentrations in the leaves of pakchoi fertilized with ammonium, ammonium/nitrate, and urea were lowered by 58.3%, 34.0%, and 44.5% and those in the petioles were lowered by 61.8%, 29.4%, and 55.6%, respectively”
Claim · model-written summary
Urea fertilization lowered Cd concentration in pakchoi petioles by 55.6%.
- Taxon
- pakchoie2
- Organ / stage
- petiolese2
- Treatment
- ureae2
- Outcome
- Cd concentrationse2
- Direction
- lowerede2
- Value
- 55.6%e2
Not reportedComparator
Verbatim
e2“Cd concentrations in the leaves of pakchoi fertilized with ammonium, ammonium/nitrate, and urea were lowered by 58.3%, 34.0%, and 44.5% and those in the petioles were lowered by 61.8%, 29.4%, and 55.6%, respectively”
Claim · model-written summary
Nitrate fertilization did not significantly change Cd concentration in pakchoi leaves and petioles compared with control.
Verbatim
e3“Cd concentration in the leaves and petioles of pakchoi in the nitrate treatment did not differ significantly from control”
The same questions in other papers
ammonium nitrate · nutrient: content · Brassica rapa (field mustard)Results agree
1 paper in the same direction as this paper
- positive
nitrogen · nutrient: content · Brassica rapa (field mustard)Positive and negative results
19 papers in the same direction as this paper · 6 in the opposite direction
- no effect
- negative
- negative
22 papers more in this group
See all 26 papers →nitrogen · physiology: oxidative · Brassica rapa (field mustard)Results agree
1 paper in the same direction as this paper
- 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.