Abstract
There is an urgent requirement for selecting appropriate technologies to solve food safety problems due to soil contamination. In this study, the hyperaccumulator Noccaea caerulescens and a high Cd accumulator pakchoi cultivar (Brassica rapa L. spp. Chinenesis cv.) were grown in a moderately Cd-contaminated soil with three planting systems (monocrop, inter-crop, and crop-rotation) and three growing durations (25, 50, and 75 days) to study the role of rhizosphere interaction of both species on the uptake of Cd. The Cd accumulations in the shoot of pakchoi were significantly reduced in the inter-crop treatment, also the decreased percentage increased with rhizosphere interaction between the two species. In the inter-crop systems of 75 days, the Cd concentration and amount in the shoot of pakchoi represented 54% and 83% reduction, respectively, while the total depletion of Cd decreased by approximate 19%. Although the Cd concentration and amount in the shoot of pakchoi were significantly reduced by 52% and 44%, respectively, in the crop-rotation treatment, the decreased percentage were markedly lower than in the inter-crop treatment. Therefore, the rhizosphere interaction of hyperaccumulator with non-hyperaccumulator may reduce the risk of vegetable contamination during making full use of or remediating the contaminated soil.
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Claims 9
Claim · model-written summary
Intercropping significantly reduced shoot cadmium accumulation in pakchoi.
- Taxon
- pakchoie0
- Organ / stage
- shoote0
- Treatment
- inter-crop treatmente0
- Outcome
- Cd accumulations in the shoot of pakchoie0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“The Cd accumulations in the shoot of pakchoi were significantly reduced in the inter-crop treatment”
Claim · model-written summary
The percentage reduction increased with rhizosphere interaction between the species.
Verbatim
e0“the decreased percentage increased with rhizosphere interaction between the two species”
e7“a high Cd accumulator pakchoi cultivar”
Claim · model-written summary
At 75 days of intercropping, pakchoi shoot cadmium concentration fell 54%.
- Taxon
- pakchoie0
- Organ / stage
- shoote0
- Treatment
- inter-crop systems of 75 dayse0
- Outcome
- Cd concentratione0
- Direction
- reductione0
- Value
- 54%e0
Not reportedComparator
Verbatim
e0“In the inter-crop systems of 75 days, the Cd concentration and amount in the shoot of pakchoi represented 54% and 83% reduction, respectively”
Claim · model-written summary
At 75 days of intercropping, pakchoi shoot cadmium amount fell 83%.
- Taxon
- pakchoie0
- Treatment
- inter-crop systems of 75 dayse0
- Outcome
- amount in the shoot of pakchoie0
- Direction
- reductione0
- Value
- 83%e0
Not reportedComparator
Verbatim
e0“In the inter-crop systems of 75 days, the Cd concentration and amount in the shoot of pakchoi represented 54% and 83% reduction, respectively”
Claim · model-written summary
Total cadmium depletion fell approximately 19% in the 75-day intercropping system.
- Taxon
- pakchoie0
- Treatment
- inter-crop systems of 75 dayse0
- Outcome
- total depletion of Cde0
- Direction
- decreasede0
- Value
- approximate 19%e0
Not reportedComparator
Verbatim
e0“In the inter-crop systems of 75 days, the Cd concentration and amount in the shoot of pakchoi represented 54% and 83% reduction, respectively, while the total depletion of Cd decreased by approximate 19%”
Claim · model-written summary
Crop rotation reduced pakchoi shoot cadmium concentration significantly by 52%.
- Taxon
- pakchoie0
- Treatment
- crop-rotation treatmente0
- Outcome
- Cd concentratione0
- Direction
- reducede0
- Value
- 52%e0
Not reportedComparator
Verbatim
e0“the Cd concentration and amount in the shoot of pakchoi were significantly reduced by 52% and 44%, respectively, in the crop-rotation treatment”
Claim · model-written summary
Crop rotation reduced pakchoi shoot cadmium amount significantly by 44%.
- Taxon
- pakchoie0
- Treatment
- crop-rotation treatmente0
- Outcome
- amount in the shoot of pakchoie0
- Direction
- reducede0
- Value
- 44%e0
Not reportedComparator
Verbatim
e0“the Cd concentration and amount in the shoot of pakchoi were significantly reduced by 52% and 44%, respectively, in the crop-rotation treatment”
Claim · model-written summary
The percentage decrease under crop rotation was lower than under intercropping.
Verbatim
e0“Although the Cd concentration and amount in the shoot of pakchoi were significantly reduced by 52% and 44%, respectively, in the crop-rotation treatment, the decreased percentage were markedly lower than in the inter-crop treatment”
Claim · model-written summary
The authors conclude that rhizosphere interaction may reduce vegetable contamination risk.
Verbatim
e0“the rhizosphere interaction of hyperaccumulator with non-hyperaccumulator may reduce the risk of vegetable contamination”
e7“a high Cd accumulator pakchoi cultivar”
The same questions in other papers
intercropping · nutrient: content · Brassica rapa (field mustard)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- negative
- 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.