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How application of agricultural waste can enhance soil health in soils acidified by tea cultivation: a review

Abstract

Tea is one of the world’s most consumed beverages and an important crop of many developing countries. Intensive tea cultivation has negative impacts on soil health properties and the environment. While soil acidification in tea plantations is a known severe issue, there is a lack of literature analysis of the ways in which soil acidification affects soil health, tea productivity and the environment, and suitable methods to control this issue. Here, we review the mechanisms of tea soil acidification and consequences, the potential of common agricultural wastes for ameliorating soil acidity and enhancing soil health and crop productivity, as well as reducing environmental pollution under tea cultivation. We show that intensive application of mineral nitrogen is the main cause of soil acidification in tea plantations, while tea plants also play a part in accelerating tea soil acidity. Agricultural waste and byproducts have a great potential to correct soil acidity, and to enhance soil health, tea productivity and quality. These soil amendments also have drawbacks such as metal and pathogen pollution, and supplementary costs.

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Adapted from Lin et al. (2019), Cai et al. (2015), Ji et al. (2018) Gu et al. (2019), Qiu et al. (2014), He et al. (2019). (*) the data for non-fertilizer management practice not available

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Funding

This work was supported by Deakin University and Alliance of Bioversity International and International Center for Tropical Agriculture (CIAT), Asia Hub, Common Microbial Biotechnology Platform (CMBP), Hanoi, Vietnam.

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Correspondence to Viet San Le or Didier Lesueur.

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The authors declare no conflict of interest.

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Le, V.S., Herrmann, L., Hudek, L. et al. How application of agricultural waste can enhance soil health in soils acidified by tea cultivation: a review. Environ Chem Lett 20, 813–839 (2022). https://doi.org/10.1007/s10311-021-01313-9

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  • DOI: https://doi.org/10.1007/s10311-021-01313-9

Keywords

  • Agricultural waste
  • Soil acidification
  • Biochar
  • Organic manure
  • Soil health
  • Tea plantations