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dc.contributor.author
Fang, Xu
dc.contributor.author
Wang, Jing
dc.contributor.author
Chen, Hongping
dc.contributor.author
Christl, Iso
dc.contributor.author
Wang, Peng
dc.contributor.author
Kretzschmar, Ruben
dc.contributor.author
Zhao, Fang-Jie
dc.date.accessioned
2021-08-27T15:18:01Z
dc.date.available
2021-08-26T10:53:19Z
dc.date.available
2021-08-27T15:18:01Z
dc.date.issued
2021-11-15
dc.identifier.issn
0269-7491
dc.identifier.issn
1878-2450
dc.identifier.issn
1873-6424
dc.identifier.other
10.1016/j.envpol.2021.117918
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/502303
dc.identifier.doi
10.3929/ethz-b-000502303
dc.description.abstract
Representing the staple crop for half of the world population, rice can accumulate high levels of cadmium (Cd) in its grain, posing concerns on food safety. Different soil amendments have been proposed to decrease Cd accumulation in rice grain by either decreasing soil Cd availability, introducing competitive ions on Cd uptake, or down-regulating the expression of transporters for Cd uptake. However, the effectiveness of soil amendments applied alone or in combinations needs to be tested under field conditions. Here, we present results of field trials with two rice cultivars differing in Cd accumulation grown at three field sites in southern China in two years, to investigate the effects of two Mn-containing soil amendments (MnO2, Mn-loaded biochar (MB)), Si fertilizer (Si), limestone, and K2SO4, as well as interactions among MnO2, Si, and limestone on decreasing Cd accumulation in rice grain. We found that single applications of MnO2 or MB to acidic soils low in Mn decreased grain Cd concentrations by 44–53 % or 78–82 %, respectively, over two years without decrease in performance. These effects were comparable to or greater than those induced by limestone liming alone (45–62 %). Strong interactions between MnO2 and limestone resulting from their influence on soil extractable Cd and Mn led to non-additive effects on lowering grain Cd. MB addition minimized grain Cd concentrations, primarily by increasing extractable and dissolved Mn concentrations, but also by decreasing Cd extractability in soil. In comparison, Si and K2SO4 amendments affected grain Cd levels only weakly. We conclude that the amendments that decrease labile Cd and increase labile Mn in soils are most effective at reducing Cd accumulation in rice grain, thus contributing to food safety.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Manganese
en_US
dc.subject
Liming
en_US
dc.subject
Biochar
en_US
dc.subject
Competition
en_US
dc.subject
Phytoavailability
en_US
dc.subject
Rice
en_US
dc.subject
Cadmium
en_US
dc.title
Two-year and multi-site field trials to evaluate soil amendments for controlling cadmium accumulation in rice grain
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2021-08-08
ethz.journal.title
Environmental Pollution
ethz.journal.volume
289
en_US
ethz.journal.abbreviated
Environ Pollut
ethz.pages.start
117918
en_US
ethz.size
11 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.grant
Reducing Cd and As uptake by rice in contaminated paddy soils: From biogeochemical processes to improved paddy management
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
London
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02721 - Inst. f. Biogeochemie u. Schadstoffdyn. / Inst. Biogeochem. and Pollutant Dynamics::03541 - Kretzschmar, Ruben / Kretzschmar, Ruben
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02721 - Inst. f. Biogeochemie u. Schadstoffdyn. / Inst. Biogeochem. and Pollutant Dynamics::03541 - Kretzschmar, Ruben / Kretzschmar, Ruben
ethz.grant.agreementno
170120
ethz.grant.fundername
SNF
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.program
Sino-Swiss Science and Technology Cooperation (SSSTC)
ethz.date.deposited
2021-08-26T10:53:28Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2021-08-27T15:18:12Z
ethz.rosetta.lastUpdated
2024-02-02T14:34:18Z
ethz.rosetta.versionExported
true
ethz.COinS
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