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Influence of N, P, and K application on Zea mays L. growth and Cu and Pb accumulation

Author

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  • W.J. Xie

    (Shandong Key Laboratory of Eco-Environmental Science for the Yellow River Delta, Binzhou University, Binzhou, P.R. China
    State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, P.R. China)

  • H.Y. Wang

    (State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, P.R. China)

  • J.B. Xia

    (Shandong Key Laboratory of Eco-Environmental Science for the Yellow River Delta, Binzhou University, Binzhou, P.R. China)

  • Z.G. Yao

    (Shandong Key Laboratory of Eco-Environmental Science for the Yellow River Delta, Binzhou University, Binzhou, P.R. China)

Abstract

Fertilization affects soil processes in many ways that remain unclear. The effects of N, P, and K application on plant growth and Cu and Pb accumulation were thus evaluated in a soil-maize system using five treatments: N, P, and K application; N and P application; N and K application; P and K application; and control (no fertilization). Compared to the control, fertilizer application treatments, especially N application, significantly increased maize photosynthetic rate, which further improved shoot biomass production. Root growth, root and shoot Cu and Pb concentrations, and Cu and Pb mobility also significantly altered with fertilizer application. Shoot Cu contents, root Cu uptake and translocation factors were significantly increased in the N-fertilized treatments. The significant decrease of shoot Pb concentration and root Pb uptake and increase of Cu and Pb immobilization were observed in theP-fertilized treatments. No significant correlation was observed between K application and Cu and Pb accumulation in maize. Our results show that an increase in P application and decrease in N application is recommended to reduce agro-ecological risks associated with Cu and Pb in soil-maize systems. However, the mechanisms governing the relationship between nutrients and heavy metal transformation in soil-plant systems needs further research.

Suggested Citation

  • W.J. Xie & H.Y. Wang & J.B. Xia & Z.G. Yao, 2011. "Influence of N, P, and K application on Zea mays L. growth and Cu and Pb accumulation," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 57(3), pages 128-134.
    • Handle: RePEc:caa:jnlpse:v:57:y:2011:i:3:id:225-2010-pse
    DOI: 10.17221/225/2010-PSE
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    References listed on IDEAS

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    1. Salah, Sharif A. & Barrington, Suzelle F., 2006. "Effect of soil fertility and transpiration rate on young wheat plants (Triticum aestivum) Cd/Zn uptake and yield," Agricultural Water Management, Elsevier, vol. 82(1-2), pages 177-192, April.
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