Tags

Type your tag names separated by a space and hit enter

Contrasting effects of alkaline amendments on the bioavailability and uptake of Cd in rice plants in a Cd-contaminated acid paddy soil.
Environ Sci Pollut Res Int. 2018 Mar; 25(9):8827-8835.ES

Abstract

Reducing cadmium (Cd) concentrations in rice grains is important for food safety, particularly in acid paddy fields in South China where the soils have been previously contaminated with Cd. A field experiment was conducted to evaluate the effects of four alkaline amendments, i.e., lime, compost, biochar, and carbide slag on soil bioavailability and uptake of Cd in plants of two rice cultivars (Oryza sativa L.) in a Cd-contaminated acid paddy soil. The addition of these amendments significantly decreased the concentrations of CaCl2-extractable Cd by 13-41%. Cd in the acid-soluble fraction was decreased in these amended soils while it increased in the residual fraction. The amendments also decreased the uptake of Cd in the plants at the tillering and mature growth stages. The concentrations of Cd in plant tissues at maturity were in the order: root > shoot > bran > polished rice > husk. The amendment of carbide slag decreased Cd concentration in rice grains the most, followed by lime, biochar, and compost. The increases in soil pH and the decreases in the acid-soluble fraction of Cd (F1-Cd) indicated that these amendments can directly transform the highly availability fraction of Cd to a more stable fraction (residual Cd fraction) in soils. Furthermore, the Cd concentrations in polished rice grains of the two rice cultivars used were reduced by 66-67% by treatment with carbide slag. Our study suggests that carbide slag has a great potential to reduce the bioavailability and uptake of Cd in rice plants in Cd-contaminated acid paddy field soils.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Meng J
Institute of Soil and Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China.
Zhong L
Institute of Soil and Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China.
Wang L
Institute of Soil and Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China.
Liu X
Institute of Soil and Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China.
Tang C
Department of Animal, Plant and Soil Sciences, La Trobe University, Melbourne Campus, Bundoora, VIC, 3086, Australia.
Chen H
Zhejiang Province Agriculture Department, Hangzhou, 310028, China.
Xu J
Institute of Soil and Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China. jmxu@zju.edu.cn.

MeSH

AcidsBiological AvailabilityCadmiumCalcium CompoundsCharcoalChinaEnvironmental PollutionOryzaOxidesSoil Pollutants

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29330814

Citation

Meng, Jun, et al. "Contrasting Effects of Alkaline Amendments On the Bioavailability and Uptake of Cd in Rice Plants in a Cd-contaminated Acid Paddy Soil." Environmental Science and Pollution Research International, vol. 25, no. 9, 2018, pp. 8827-8835.
Meng J, Zhong L, Wang L, et al. Contrasting effects of alkaline amendments on the bioavailability and uptake of Cd in rice plants in a Cd-contaminated acid paddy soil. Environ Sci Pollut Res Int. 2018;25(9):8827-8835.
Meng, J., Zhong, L., Wang, L., Liu, X., Tang, C., Chen, H., & Xu, J. (2018). Contrasting effects of alkaline amendments on the bioavailability and uptake of Cd in rice plants in a Cd-contaminated acid paddy soil. Environmental Science and Pollution Research International, 25(9), 8827-8835. https://doi.org/10.1007/s11356-017-1148-y
Meng J, et al. Contrasting Effects of Alkaline Amendments On the Bioavailability and Uptake of Cd in Rice Plants in a Cd-contaminated Acid Paddy Soil. Environ Sci Pollut Res Int. 2018;25(9):8827-8835. PubMed PMID: 29330814.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Contrasting effects of alkaline amendments on the bioavailability and uptake of Cd in rice plants in a Cd-contaminated acid paddy soil. AU - Meng,Jun, AU - Zhong,Libin, AU - Wang,Lu, AU - Liu,Xingmei, AU - Tang,Caixian, AU - Chen,Hongjin, AU - Xu,Jianming, Y1 - 2018/01/12/ PY - 2017/06/01/received PY - 2017/12/26/accepted PY - 2018/1/14/pubmed PY - 2019/1/24/medline PY - 2018/1/14/entrez KW - Biochar KW - Cadmium KW - Carbide slag KW - Fraction KW - Paddy soil SP - 8827 EP - 8835 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 25 IS - 9 N2 - Reducing cadmium (Cd) concentrations in rice grains is important for food safety, particularly in acid paddy fields in South China where the soils have been previously contaminated with Cd. A field experiment was conducted to evaluate the effects of four alkaline amendments, i.e., lime, compost, biochar, and carbide slag on soil bioavailability and uptake of Cd in plants of two rice cultivars (Oryza sativa L.) in a Cd-contaminated acid paddy soil. The addition of these amendments significantly decreased the concentrations of CaCl2-extractable Cd by 13-41%. Cd in the acid-soluble fraction was decreased in these amended soils while it increased in the residual fraction. The amendments also decreased the uptake of Cd in the plants at the tillering and mature growth stages. The concentrations of Cd in plant tissues at maturity were in the order: root > shoot > bran > polished rice > husk. The amendment of carbide slag decreased Cd concentration in rice grains the most, followed by lime, biochar, and compost. The increases in soil pH and the decreases in the acid-soluble fraction of Cd (F1-Cd) indicated that these amendments can directly transform the highly availability fraction of Cd to a more stable fraction (residual Cd fraction) in soils. Furthermore, the Cd concentrations in polished rice grains of the two rice cultivars used were reduced by 66-67% by treatment with carbide slag. Our study suggests that carbide slag has a great potential to reduce the bioavailability and uptake of Cd in rice plants in Cd-contaminated acid paddy field soils. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/29330814/Contrasting_effects_of_alkaline_amendments_on_the_bioavailability_and_uptake_of_Cd_in_rice_plants_in_a_Cd_contaminated_acid_paddy_soil_ DB - PRIME DP - Unbound Medicine ER -