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Immobilization of Cd in paddy soil using moisture management and amendment.
Environ Sci Pollut Res Int. 2015 Apr; 22(7):5580-6.ES

Abstract

To offer scientific data support for remediation of Cd-contaminated paddy soils under reasonable water condition, pot experiment was conducted to study the effects of moisture management and amendments on Cd immobilization in a paddy soil. Application of biochar combined with organic fertilizer reduced the exchangeable Cd by 20.4, 15.7, and 13.0% and brown rice Cd by 43.8, 35.5, and 42.1% under continuous flooding, conventional irrigation, and wetting irrigation, respectively, compared to the controls. Under no amendments, the content of Fe(II) in root coating in the continuous flooding treatment was 2.3 and 3.6 times of that in the conventional and wetting irrigation treatments, but Cd in root coating in the continuous flooding treatment was only 82.6 and 73.8% of that in the conventional and wetting irrigation treatments. Applying amendments increased the Fe(II) in root coating by 27.3, 59.1, and 65.0% but reduced the Cd in root coating by 33.6, 26.5, and 25.1% under continuous flooding, conventional irrigation, and wetting irrigation, respectively. The lower bioavailability of Cd in paddy soil and the competition for adsorption sites in root coating of rice plant between Cd(2+) and Fe(2+) reduced from bivalent ions jointly caused the lower brown rice Cd in amended soils.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Li J
Ministry of Agriculture, Institute of Agro-Environmental Protection, Tianjin, 300191, China.
Xu Y
No affiliation info available

MeSH

AdsorptionAgricultural IrrigationAgricultureBiological AvailabilityCadmiumCharcoalEnvironmental Restoration and RemediationFertilizersHydrogen-Ion ConcentrationIronOryzaPlant RootsSoil Pollutants

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25388557

Citation

Li, Jianrui, and Yingming Xu. "Immobilization of Cd in Paddy Soil Using Moisture Management and Amendment." Environmental Science and Pollution Research International, vol. 22, no. 7, 2015, pp. 5580-6.
Li J, Xu Y. Immobilization of Cd in paddy soil using moisture management and amendment. Environ Sci Pollut Res Int. 2015;22(7):5580-6.
Li, J., & Xu, Y. (2015). Immobilization of Cd in paddy soil using moisture management and amendment. Environmental Science and Pollution Research International, 22(7), 5580-6. https://doi.org/10.1007/s11356-014-3788-5
Li J, Xu Y. Immobilization of Cd in Paddy Soil Using Moisture Management and Amendment. Environ Sci Pollut Res Int. 2015;22(7):5580-6. PubMed PMID: 25388557.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Immobilization of Cd in paddy soil using moisture management and amendment. AU - Li,Jianrui, AU - Xu,Yingming, Y1 - 2014/11/13/ PY - 2014/09/17/received PY - 2014/10/28/accepted PY - 2014/11/13/entrez PY - 2014/11/13/pubmed PY - 2015/7/15/medline SP - 5580 EP - 6 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 22 IS - 7 N2 - To offer scientific data support for remediation of Cd-contaminated paddy soils under reasonable water condition, pot experiment was conducted to study the effects of moisture management and amendments on Cd immobilization in a paddy soil. Application of biochar combined with organic fertilizer reduced the exchangeable Cd by 20.4, 15.7, and 13.0% and brown rice Cd by 43.8, 35.5, and 42.1% under continuous flooding, conventional irrigation, and wetting irrigation, respectively, compared to the controls. Under no amendments, the content of Fe(II) in root coating in the continuous flooding treatment was 2.3 and 3.6 times of that in the conventional and wetting irrigation treatments, but Cd in root coating in the continuous flooding treatment was only 82.6 and 73.8% of that in the conventional and wetting irrigation treatments. Applying amendments increased the Fe(II) in root coating by 27.3, 59.1, and 65.0% but reduced the Cd in root coating by 33.6, 26.5, and 25.1% under continuous flooding, conventional irrigation, and wetting irrigation, respectively. The lower bioavailability of Cd in paddy soil and the competition for adsorption sites in root coating of rice plant between Cd(2+) and Fe(2+) reduced from bivalent ions jointly caused the lower brown rice Cd in amended soils. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/25388557/Immobilization_of_Cd_in_paddy_soil_using_moisture_management_and_amendment_ DB - PRIME DP - Unbound Medicine ER -