Abstract
Cadmium (Cd) contamination in soil is an increasingly serious problem. Management of plant nutrients has been proposed as a potentially promising strategy for minimizing Cd accumulation in crops grown in contaminated soil. This study investigated the effects of split applications of nitrogen (N) fertilizers on the Cd concentration in Chinese cabbage (Brassica chinensis L.) plants grown in Cd-contaminated soil. Compared with single applications, split applications of ammonium or urea resulted in significantly lower Cd concentrations, and higher biomass production and antioxidant-associated nutritional quality in the edible plant parts. However, when nitrate was used as the N fertilizer, there were no significant differences between the split and single applications for the same parameters. We conclude that a split application could be more beneficial than a single application method when ammonium or urea is used as the N fertilizer for vegetable cultivation in Cd-contaminated soil.
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Claims 6
Claim · model-written summary
Split ammonium applications significantly lowered cadmium concentration in edible Chinese cabbage relative to single applications.
- Taxon
- Chinese cabbage
Brassica rapa subsp. pekinensist0 - Organ / stage
- edible plant partse0
- Treatment
- split applications of ammoniume0
- Outcome
- Cd concentrationse0
- Direction
- lowere0
- Comparator
- single applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with single applications, split applications of ammonium or urea resulted in significantly lower Cd concentrations, and higher biomass production and antioxidant-associated nutritional quality in the edible plant parts”
t0“Chinese cabbage”
Claim · model-written summary
Split urea applications significantly lowered cadmium concentration in edible Chinese cabbage relative to single applications.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensist0
- Organ / stage
- edible plant partse0
- Treatment
- ureae0
- Outcome
- Cd concentrationse0
- Direction
- lowere0
- Comparator
- single applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with single applications, split applications of ammonium or urea resulted in significantly lower Cd concentrations, and higher biomass production and antioxidant-associated nutritional quality in the edible plant parts”
t0“Chinese cabbage”
Claim · model-written summary
Split ammonium applications increased cabbage biomass production and antioxidant-associated nutritional quality relative to single applications.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensist0
- Organ / stage
- edible plant partse0
- Treatment
- split applications of ammoniume0
- Outcome
- biomass production and antioxidant-associated nutritional qualitye0
- Direction
- highere0
- Comparator
- single applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with single applications, split applications of ammonium or urea resulted in significantly lower Cd concentrations, and higher biomass production and antioxidant-associated nutritional quality in the edible plant parts”
t0“Chinese cabbage”
Claim · model-written summary
Split urea applications increased cabbage biomass production and antioxidant-associated nutritional quality relative to single applications.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensist0
- Organ / stage
- edible plant partse0
- Treatment
- ureae0
- Outcome
- biomass production and antioxidant-associated nutritional qualitye0
- Direction
- highere0
- Comparator
- single applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with single applications, split applications of ammonium or urea resulted in significantly lower Cd concentrations, and higher biomass production and antioxidant-associated nutritional quality in the edible plant parts”
t0“Chinese cabbage”
Claim · model-written summary
Split and single nitrate applications did not differ significantly for the measured cadmium, biomass and quality parameters.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensist0
- Treatment
- splite0
- Outcome
- same parameterse0
- Direction
- no significant differencese0
- Qualifier
- nitrate was used as the N fertilizere0
- Comparator
- single applicationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when nitrate was used as the N fertilizer, there were no significant differences between the split and single applications for the same parameters”
t0“Chinese cabbage”
Claim · model-written summary
The authors favor split over single applications when ammonium or urea fertilizes vegetables in cadmium-contaminated soil.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensist0
- Treatment
- ammonium or ureae0
- Outcome
- a split application could be more beneficial than a single application methode0
- Qualifier
- Cd-contaminated soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a split application could be more beneficial than a single application method when ammonium or urea is used as the N fertilizer for vegetable cultivation in Cd-contaminated soil”
t0“Chinese cabbage”
The same questions in other papers
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 · quality: grain · 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.