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Response of potato tuber yield to NPK fertiliser in China: a meta-analysis

Author

Listed:
  • Shun Li

    (Academy of Animal Science and Veterinary, Qinghai University, Xining, P.R. China)

  • Lei Zeng

    (Affiliated Hospital of Qinghai University, Xining, P.R. China)

  • Ling Zhao

    (College of Finance and Economics, Qinghai University, Xining, P.R. China)

Abstract

Potato (Solanum tuberosum L.) is an economically significant food crop in China, and increasing tuber yield is a national priority. We conducted a meta-analysis utilising 180 studies and 1 583 pairs of observations to quantify the effects of fertilisation on potato tuber yield using data on climate, soil nutrients, and planting strategies. Compared with no fertilisation, fertilisation increased tuber yield by 33.64% overall. Applying single N, P, or K fertilisers increased yield by 33.64, 23.37, and 16.18%, respectively; combined NP, NK, and PK applications increased yield by 33.64, 36.34, and 19.12%, respectively. The greatest yield increase (49.18%) was achieved when NPK fertilisers were applied together. Average annual precipitation had the strongest effect on tuber yield, followed by cultivar identity and the availability of soil potassium. Under appropriate fertilisation regimes, tailoring planting strategies to local climate and soil nutrient status can maximise potato yield and improve economic returns. These findings have implications for future potato cultivation in China.

Suggested Citation

  • Shun Li & Lei Zeng & Ling Zhao, 2025. "Response of potato tuber yield to NPK fertiliser in China: a meta-analysis," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 71(12), pages 883-890.
    • Handle: RePEc:caa:jnlpse:v:71:y:2025:i:12:id:514-2025-pse
    DOI: 10.17221/514/2025-PSE
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    References listed on IDEAS

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