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High soil redox potential contributes to iron deficiency in drip-irrigated rice grown in calcareous Fluvisol

Author

Listed:
  • Xinjiang Zhang

    (Key Lab of Oasis Ecology Agriculture of Xinjiang Production and Construction Group, Shihezi University, Shihezi, P.R. China)

  • Jianwei Hou

    (Key Lab of Oasis Ecology Agriculture of Xinjiang Production and Construction Group, Shihezi University, Shihezi, P.R. China
    Zhaosu Agricultural Science and Technology Park, Yili, Xinjiang, P.R. China)

  • Xiaojuan Wang

    (Tianye Agriculture Research Institute, Tianye Group Ltd. of Xinjiang, Shihezi, P.R. China)

  • Zhiyang Zhang

    (Key Lab of Oasis Ecology Agriculture of Xinjiang Production and Construction Group, Shihezi University, Shihezi, P.R. China)

  • Fei Dai

    (Key Lab of Oasis Ecology Agriculture of Xinjiang Production and Construction Group, Shihezi University, Shihezi, P.R. China)

  • Juan Wang

    (Key Lab of Oasis Ecology Agriculture of Xinjiang Production and Construction Group, Shihezi University, Shihezi, P.R. China)

  • Changzhou Wei

    (Key Lab of Oasis Ecology Agriculture of Xinjiang Production and Construction Group, Shihezi University, Shihezi, P.R. China)

Abstract

Drip-irrigated rice (Oryza sativa L.) is susceptible to iron (Fe) deficiency. The major possible cause of Fe deficiency is the changes in the water regime, which mainly affects the redox potential (Eh) of the soil dictating the solubility of Fe. However, how high soil Eh affects soil available Fe and rice Fe uptake is unclear. In this paper, we investigated the effect of soil Eh on rice Fe uptake under different water management strategies (drip irrigation (DI), flood irrigation (FI) and forced aeration of soil in flooding irrigation (FIO)). The results showed that the diethylenetriaminepentaacetic acid (DTPA)-extractable Fe and Fe(II) concentration in the soil, Fe concentration and chlorophyll contents of leaves and biomass of rice in FIO were greater than those in DI but significantly less than those in FI. The Fe uptake of the plant in DI was the lowest, but which in FI was the highest. Overall, FIO resulted in a significant reduction in Fe uptake of rice, but greater than that in DI. We concluded that both the decreased soil water content and the increased soil Eh were important factors that caused Fe deficiency of drip-irrigated rice.

Suggested Citation

  • Xinjiang Zhang & Jianwei Hou & Xiaojuan Wang & Zhiyang Zhang & Fei Dai & Juan Wang & Changzhou Wei, 2019. "High soil redox potential contributes to iron deficiency in drip-irrigated rice grown in calcareous Fluvisol," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 65(7), pages 337-342.
    • Handle: RePEc:caa:jnlpse:v:65:y:2019:i:7:id:178-2019-pse
    DOI: 10.17221/178/2019-PSE
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    References listed on IDEAS

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    1. Felipe Macías & Marta Camps Arbestain, 2010. "Soil carbon sequestration in a changing global environment," Mitigation and Adaptation Strategies for Global Change, Springer, vol. 15(6), pages 511-529, August.
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