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Effect of low-molecular-weight organic acids on phosphorus soil activation: A laboratory study of the soils from Wangbeng section of the Huaihe River Basin, China

Author

Listed:
  • Jinxin Zhang

    (School of Earth and Environment, Anhui University of Science and Technology, Huainan, Anhui, P.R. China)

  • Liangmin Gao

    (School of Earth and Environment, Anhui University of Science and Technology, Huainan, Anhui, P.R. China)

  • Zhendong Pang

    (Environmental Protection Monitoring Station of Huainan city, Huainan, Anhui, P.R. China)

  • Linghan Liu

    (Zhejiang Wangneng Ecological Technology Co., Ltd., Huzhou, Zhejiang, P.R. China)

  • Xiaoqing Chen

    (School of Earth and Environment, Anhui University of Science and Technology, Huainan, Anhui, P.R. China)

  • Shuo Wang

    (School of Earth and Environment, Anhui University of Science and Technology, Huainan, Anhui, P.R. China)

  • Hui Wang

    (School of Earth and Environment, Anhui University of Science and Technology, Huainan, Anhui, P.R. China)

  • Rongrong Tong

    (School of Earth and Environment, Anhui University of Science and Technology, Huainan, Anhui, P.R. China)

  • Chuang Shi

    (School of Earth and Environment, Anhui University of Science and Technology, Huainan, Anhui, P.R. China)

  • Xudong Chen

    (School of Earth and Environment, Anhui University of Science and Technology, Huainan, Anhui, P.R. China)

Abstract

Farmland soil samples from the northern and southern banks of the Wangbeng section of the Huaihe River Basin, China, were collected and treated with three different low-molecular-weight organic acids (LMWOAs) (malic acid, citric acid, oxalic acid). This study aimed to determine how these acids affect soil phosphorus activation. The results showed that the average activation rate of total phosphorus, inorganic phosphorus, Fe/Al-P and Ca-P in soil samples from the southern bank treated with malic and citric acid was above 162%, except for organic phosphorus, with the highest at 192.04%. The three organic acids displayed significantly greater phosphorus activation in the northern bank soil samples than those of the southern bank. However, the overall average activation rate in the northern bank soils was lower than that of the southern bank. The four factors of phosphorus species, acid species, acid concentration, and treatment time had significant effects on phosphorus activation in the soils from both banks. This study showed that the three organic acids significantly activated inert phosphorus in the soil. Among them, malic acid and citric acid had a stronger effect on activating soil phosphorus and increased the available soil phosphorus utilisation rate.

Suggested Citation

  • Jinxin Zhang & Liangmin Gao & Zhendong Pang & Linghan Liu & Xiaoqing Chen & Shuo Wang & Hui Wang & Rongrong Tong & Chuang Shi & Xudong Chen, 2021. "Effect of low-molecular-weight organic acids on phosphorus soil activation: A laboratory study of the soils from Wangbeng section of the Huaihe River Basin, China," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 67(11), pages 660-667.
    • Handle: RePEc:caa:jnlpse:v:67:y:2021:i:11:id:379-2021-pse
    DOI: 10.17221/379/2021-PSE
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