Abstract
Animal manure is widely used as organic fertilizer for crops.However, high concentrations of heavy metals in animal manure are of great concern.In this study, we found that chicken and pig manure compost contain high concentrations of arsenic (As), cadmium (Cd), copper (Cu) and zinc (Zn), and the concentrations of these heavy metals in the pig manure were higher than those in the chicken manure.Chicken or pig manure compost fertilization elevated the concentrations of these heavy metals in the paddy soil and polished rice grains.Silicon (Si) application at the tilling stage significantly mitigated the accumulation of As, Cd, Ni, Cu and Zn in polished rice grains.In the chicken manure-fertilized rice grains, Si application decreased As, Cd, Ni, Cu and Zn concentrations by 25.9%, 29.6%, 33.4%, 17.0% and 16.3%, respectively.In the pig manure fertilized rice grains, these parameters decreased by 23.2%, 29.8%, 30.8%, 18.7% and 16.4%, respectively.These results indicate that Si application could be a feasible and effective approach to mitigate heavy metal accumulation in the rice grains produced in animal manure-fertilized paddy fields.
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Claims 14
Claim · model-written summary
Pig manure compost contained higher heavy-metal concentrations than chicken manure compost.
- Taxon
- rice
Oryza sativat0 - Outcome
- concentrations of these heavy metals in the pig manuree0
- Direction
- highere0
- Comparator
- chicken manuree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chicken and pig manure compost contain high concentrations of arsenic (As), cadmium (Cd), copper (Cu) and zinc (Zn), and the concentrations of these heavy metals in the pig manure were higher than those in the chicken manure.”
t0“RICE”
Claim · model-written summary
Chicken or pig manure compost raised heavy-metal concentrations in paddy soil.
- Taxon
- riceOryza sativae0
- Treatment
- Chicken or pig manure compost fertilizatione0
- Outcome
- concentrations of these heavy metals in the paddy soile0
- Direction
- elevatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chicken or pig manure compost fertilization elevated the concentrations of these heavy metals in the paddy soil and polished rice grains.”
t0“RICE”
Claim · model-written summary
Chicken or pig manure compost raised heavy-metal concentrations in polished rice grains.
- Taxon
- riceOryza sativae0
- Treatment
- Chicken or pig manure compost fertilizatione0
- Outcome
- concentrations of these heavy metals in the paddy soil and polished rice grainse0
- Direction
- elevatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chicken or pig manure compost fertilization elevated the concentrations of these heavy metals in the paddy soil and polished rice grains.”
t0“RICE”
Claim · model-written summary
Silicon application significantly reduced As accumulation in chicken-manure-fertilized rice grains by 25.9%.
- Taxon
- riceOryza sativae0
- Organ / stage
- rice grainse0
- Treatment
- Si applicatione0
- Outcome
- Ase0
- Direction
- decreasede0
- Value
- 25.9%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the chicken manure-fertilized rice grains, Si application decreased As, Cd, Ni, Cu and Zn concentrations by 25.9%, 29.6%, 33.4%, 17.0% and 16.3%, respectively.”
Claim · model-written summary
Silicon application reduced Cd accumulation in chicken-manure-fertilized rice grains by 29.6%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the chicken manure-fertilized rice grains, Si application decreased As, Cd, Ni, Cu and Zn concentrations by 25.9%, 29.6%, 33.4%, 17.0% and 16.3%, respectively.”
Claim · model-written summary
Silicon application reduced Ni accumulation in chicken-manure-fertilized rice grains by 33.4%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the chicken manure-fertilized rice grains, Si application decreased As, Cd, Ni, Cu and Zn concentrations by 25.9%, 29.6%, 33.4%, 17.0% and 16.3%, respectively.”
Claim · model-written summary
Silicon application reduced Cu accumulation in chicken-manure-fertilized rice grains by 17.0%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the chicken manure-fertilized rice grains, Si application decreased As, Cd, Ni, Cu and Zn concentrations by 25.9%, 29.6%, 33.4%, 17.0% and 16.3%, respectively.”
Claim · model-written summary
Silicon application reduced Zn accumulation in chicken-manure-fertilized rice grains by 16.3%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the chicken manure-fertilized rice grains, Si application decreased As, Cd, Ni, Cu and Zn concentrations by 25.9%, 29.6%, 33.4%, 17.0% and 16.3%, respectively.”
Claim · model-written summary
Silicon application reduced As accumulation in pig-manure-fertilized rice grains by 23.2%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the pig manure fertilized rice grains, these parameters decreased by 23.2%, 29.8%, 30.8%, 18.7% and 16.4%, respectively.”
t0“Si application decreased As, Cd, Ni, Cu and Zn concentrations”
Claim · model-written summary
Silicon application reduced Cd accumulation in pig-manure-fertilized rice grains by 29.8%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the pig manure fertilized rice grains, these parameters decreased by 23.2%, 29.8%, 30.8%, 18.7% and 16.4%, respectively.”
t0“Si application decreased As, Cd, Ni, Cu and Zn concentrations”
Claim · model-written summary
Silicon application reduced Ni accumulation in pig-manure-fertilized rice grains by 30.8%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the pig manure fertilized rice grains, these parameters decreased by 23.2%, 29.8%, 30.8%, 18.7% and 16.4%, respectively.”
t0“Si application decreased As, Cd, Ni, Cu and Zn concentrations”
Claim · model-written summary
Silicon application reduced Cu accumulation in pig-manure-fertilized rice grains by 18.7%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the pig manure fertilized rice grains, these parameters decreased by 23.2%, 29.8%, 30.8%, 18.7% and 16.4%, respectively.”
t0“Si application decreased As, Cd, Ni, Cu and Zn concentrations”
Claim · model-written summary
Silicon application reduced Zn accumulation in pig-manure-fertilized rice grains by 16.4%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the pig manure fertilized rice grains, these parameters decreased by 23.2%, 29.8%, 30.8%, 18.7% and 16.4%, respectively.”
t0“Si application decreased As, Cd, Ni, Cu and Zn concentrations”
Claim · model-written summary
The authors propose silicon application to mitigate rice grain heavy-metal accumulation in manure-fertilized fields.
- Taxon
- riceOryza sativae0
- Treatment
- Si applicatione0
- Outcome
- mitigate heavy metal accumulation in the rice grainse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si application could be a feasible and effective approach to mitigate heavy metal accumulation in the rice grains produced in animal manure-fertilized paddy fields.”
The same questions in other papers
silicon atom · nutrient: content · Oryza sativa (rice)Results differ
163 papers in the same direction as this paper · 13 in the opposite direction
- no effect
- no effect
- no effect
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See all 177 papers →fertilization · organism · Oryza sativa (rice)Positive and negative results
21 papers in the same direction as this paper · 113 in the opposite direction
- positive
- positive
- positive
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See all 135 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.