Effects of sulfate on cadmium uptake in wheat grown in paddy soil - pot experiment

Lijuan Huang, Hans Chr. Bruun Hansen, Huihui Wang, Jing Mu, Zijian Xie, Lifang Zheng and Zhengyi Hu
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Lijuan Huang: College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, P.R. China
Hans Chr. Bruun Hansen: Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
Huihui Wang: Institute of Energy and Environmental Protection, Chinese Academy of Agricultural Engineering Planning and Design, Beijing, P.R. China
Jing Mu: College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, P.R. China
Zijian Xie: College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, P.R. China
Lifang Zheng: Institute of Soil and Water Conservation, Chinese Academy of Sciences, Shanxi, P.R. China
Zhengyi Hu: College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, P.R. China

Plant, Soil and Environment, 2019, vol. 65, issue 12, 602-608

Abstract: Rice-wheat rotation is common in China. Cadmium (Cd) and sulfur (S) are added to rice fields through various activities. The sulfur amendment has been recommended to control the uptake of Cd in rice. However, the effect of S on Cd uptake in winter wheat cultivated in paddy soil is rarely reported. A greenhouse pot experiment including two Cd levels (0, 10 mg Cd/kg, as CdCl2) combined with three S rates (0, 30, 60 mg S/kg, as Na2SO4) was performed to investigate the effect of S application on uptake and allocation of Cd in wheat cultivated in paddy soil. Cadmium concentrations in wheat grain significantly (P < 0.05) increased by 37% at 30 mg S/kg, and the percentage of Cd allocation to grain significantly (P < 0.05) increased by 7% at 60 mg S/kg compared with non-S addition treatment when wheat was grown in Cd-added soil. For the low Cd soil, a similar trend was seen, but Cd increases were insignificant for grain while significant (P < 0.05) for root at 60 mg S/kg. In conclusion, S fertiliser may promote Cd accumulation in wheat grain and should be considered when it is used for wheat in paddy soils.

Keywords: cadmium toxicity; Triticum aestivum L.; plant uptake; translocation; distribution (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:65:y:2019:i:12:id:558-2019-pse

DOI: 10.17221/558/2019-PSE

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