Abstract
A greenhouse experiment was conducted to investigate the effects of intercropping 7 kinds of crops on the Cd uptake by maize (Zea mays L.). The results showed that most intercrops had no significant effects on the growth of maize, only with purple haricot reduced the maize biomass by 32.2% of the control. Legume crops enhanced the total quantity of Cd in maize in a great magnitude, and chickpea worked most efficiently, which doubled the Cd quantity in maize. The 7 intercrops showed different capability of Cd uptake, among which, rape and amaranth absorbed larger amount of Cd, with a Cd level of 53.9 mg x kg(-1) and 51.0 mg x kg(-1) in their aboveground parts, respectively, and of 91.8 mg x kg(-1) in amaranth root when the soil Cd content was 3 mg x kg(-1) soil. There was an interaction between maize and intercrops in Cd uptake. Legumes absorbed smaller amount of Cd but significantly increased the Cd uptake by maize, while amaranth was in adverse. Rape had a higher level of Cd concentration in its shoot, but reduced the Cd in aboveground part of maize. It was indicated that if maize was used for phytoremediation of Cd-contaminated soil, a higher efficiency of Cd removal could be achieved by intercropping it with legumes. Rape and amaranth could be the two promising plants for phytoremediation because of their high Cd accumulation.
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Claims 15
Claim · model-written summary
Most intercrops did not significantly change maize growth.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“most intercrops had no significant effects on the growth of maize”
e1“growth of maize”
Claim · model-written summary
Purple haricot reduced maize biomass by 32.2% of control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“purple haricot reduced the maize biomass by 32.2% of the control”
e1“growth of maize”
Claim · model-written summary
Legume crops enhanced total maize Cd quantity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Legume crops enhanced the total quantity of Cd in maize in a great magnitude”
e1“growth of maize”
Claim · model-written summary
Chickpea doubled maize Cd quantity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chickpea worked most efficiently, which doubled the Cd quantity in maize”
e1“growth of maize”
Claim · model-written summary
Rape accumulated 53.9 mg x kg(-1) Cd aboveground.
- Taxon
- rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse0 - Organ / stage
- aboveground partse0
- Outcome
- Cd levele0
- Direction
- largere0
- Value
- 53.9 mg x kg(-1)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“rape and amaranth absorbed larger amount of Cd, with a Cd level of 53.9 mg x kg(-1) and 51.0 mg x kg(-1) in their aboveground parts”
Claim · model-written summary
Amaranth accumulated 51.0 mg x kg(-1) Cd aboveground.
- Taxon
- amaranth
.JPG?width=60)
Amaranthus caudatuse0 - Organ / stage
- aboveground partse0
- Outcome
- Cd levele0
- Direction
- largere0
- Value
- 51.0 mg x kg(-1)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“amaranth absorbed larger amount of Cd, with a Cd level of 53.9 mg x kg(-1) and 51.0 mg x kg(-1) in their aboveground parts”
Claim · model-written summary
Amaranth roots accumulated 91.8 mg x kg(-1) Cd at the specified soil concentration.
- Taxon
- amaranthAmaranthus caudatuse0
- Organ / stage
- roote0
- Outcome
- Cde0
- Value
- 91.8 mg x kg(-1)e0
- Qualifier
- soil Cd content was 3 mg x kg(-1) soile0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“91.8 mg x kg(-1) in amaranth root when the soil Cd content was 3 mg x kg(-1) soil”
Claim · model-written summary
Legumes absorbed less Cd.
Verbatim
e0“Legumes absorbed smaller amount of Cd”
Claim · model-written summary
Legumes significantly increased maize Cd uptake.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Legumes absorbed smaller amount of Cd but significantly increased the Cd uptake by maize”
e1“growth of maize”
Claim · model-written summary
Amaranth had the adverse effect on maize Cd uptake.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while amaranth was in adverse”
e1“growth of maize”
Claim · model-written summary
Rape had a higher shoot Cd concentration.
- Taxon
- RapeBrassica napuse0
- Organ / stage
- shoote0
- Outcome
- Cd concentratione0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rape had a higher level of Cd concentration in its shoot”
Claim · model-written summary
Rape reduced Cd in the aboveground maize portion.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rape had a higher level of Cd concentration in its shoot, but reduced the Cd in aboveground part of maize”
e1“growth of maize”
Claim · model-written summary
Legume intercropping was recommended to improve Cd removal by maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a higher efficiency of Cd removal could be achieved by intercropping it with legumes”
e1“growth of maize”
Claim · model-written summary
Rape was identified as promising for Cd phytoremediation.
- Taxon
- RapeBrassica napuse0
- Outcome
- promising plants for phytoremediatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rape and amaranth could be the two promising plants for phytoremediation because of their high Cd accumulation”
Claim · model-written summary
Amaranth was identified as promising for Cd phytoremediation.
- Taxon
- amaranthAmaranthus caudatuse0
- Outcome
- promising plants for phytoremediatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rape and amaranth could be the two promising plants for phytoremediation because of their high Cd accumulation”
The same questions in other papers
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Cicer arietinum · nutrient: content · Zea mays (maize)Results agree
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intercropping · growth · Zea mays (maize)Results differ
45 papers in the same direction as this paper · 138 in the opposite direction
- positive
- positive
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180 papers more in this group
See all 184 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.