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Using iron fertilizer to control Cd accumulation in rice plants: A new promising technology

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Abstract

Effects of two kinds of iron fertilizer, FeSO4 and EDTA·Na2Fe were studied on cadmium accumulation in rice plants with two rice genotypes, Zhongzao 22 and Zhongjiazao 02, with soil culture systems. The results showed that application of iron fertilizers could hardly make adverse effects on plant growth and rice grain yield. Soil application of EDTA·Na2Fe significantly reduced the Cd accumulation in rice roots, shoots and rice grain. Cd concentration in white rice of both rice genotypes in the treatment of soil application of EDTA·Na2Fe was much lower than 0.2 mg/kg, the maximal Cd permission concentration in cereal crop foods in State standard. However, soil application of FeSO4 or foliar application of FeSO4 or EDTA·Na2Fe resulted in the significant increase of Cd accumulation in rice plants including rice grain compared with the control. The results also showed iron fertilizers increased the concentration of iron, copper and manganese element in rice grain and also affected zinc concentration in plants. It may be a new promising way to regulate Cd accumulation in rice grain in rice production through soil application of EDTA·Na2Fe fertilizers to maintain higher content of available iron and ferrous iron in soils.

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Authors and Affiliations

  1. China National Rice Research Institute, Hangzhou, 31006, China

    Shao GuoSheng, Chen MingXue, Wang DanYing, Xu ChunMei, Mou RenXiang, Cao ZhaoYun & Zhang XiuFu

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  1. Shao GuoSheng
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  2. Chen MingXue
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  3. Wang DanYing
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  4. Xu ChunMei
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  5. Mou RenXiang
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  6. Cao ZhaoYun
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  7. Zhang XiuFu
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Correspondence to Zhang XiuFu.

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Contributed equally to this work

Supported by the National Natural Science Foundation of China (Grant No. 30600379) and the Research Funds for National Nonprofit Research Institution (Grant No. CNRRI 10023)

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Shao, G., Chen, M., Wang, D. et al. Using iron fertilizer to control Cd accumulation in rice plants: A new promising technology. Sci. China Ser. C-Life Sci. 51, 245–253 (2008). https://doi.org/10.1007/s11427-008-0031-y

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  • DOI: https://doi.org/10.1007/s11427-008-0031-y

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