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Potassium impact on nitrogen use efficiency in potato - a case study from the Central-East Europe

Author

Listed:
  • Witold GRZEBISZ

    (Poznan University Life Sciences, Poznan, Poland)

  • Pavel ČERMÁK

    (Crop Research Institute, Prague, Czech Republic)

  • Evan RROCO

    (Agricultural University of Tirana, Tirana, Albania)

  • Witold SZCZEPANIAK

    (Poznan University Life Sciences, Poznan, Poland)

  • Jarosław POTARZYCKI

    (Poznan University Life Sciences, Poznan, Poland)

  • György FÜLEKY

    (Szent István University, Gödöllő, Hungary)

Abstract

Potato yield is affected by an interaction between nitrogen (N) and potassium (K) supply. This hypothesis was verified in a series of field experiments conducted during 2010-2013 in Albania (AL), Czech Republic (CZ) and Poland (PL). The two-factorial experiment was founded on relative scales of K (0, 50, 100, and 150%), and N application rates (75% and 100%) of the recommended doses, which were country-specific. The average tuber yield was doubled for AL, increased by 50% for PL, and by 15% for the CZ in response to K and N interaction. These differences are caused by an increase in the apparent nitrogen efficiency (ANE), which rose significantly by the progressive Krates. Maximum average ANE of 90 kg tubers/kg N was recorded in AL; it was 2-fold lower in CZ. Top average apparent potassium efficiency (AKE) of 65 kg tubers/kg K was recorded in PL; it was 4-times lower in CZ. The relationships between AKE and ANE clearly demonstrate the tight interaction between the N and K, and its effects on potato yield. However, a sound K application management should be adjusted to the local edaphic and climatic conditions.

Suggested Citation

  • Witold GRZEBISZ & Pavel ČERMÁK & Evan RROCO & Witold SZCZEPANIAK & Jarosław POTARZYCKI & György FÜLEKY, 2017. "Potassium impact on nitrogen use efficiency in potato - a case study from the Central-East Europe," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 63(9), pages 422-427.
    • Handle: RePEc:caa:jnlpse:v:63:y:2017:i:9:id:344-2017-pse
    DOI: 10.17221/344/2017-PSE
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    References listed on IDEAS

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    1. M. Madaras & M. Koubová & M. Smatanová, 2014. "Long-term effect of low potassium fertilization on its soil fractions," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 60(8), pages 358-363.
    2. Supit, I. & van Diepen, C.A. & de Wit, A.J.W. & Kabat, P. & Baruth, B. & Ludwig, F., 2010. "Recent changes in the climatic yield potential of various crops in Europe," Agricultural Systems, Elsevier, vol. 103(9), pages 683-694, November.
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    Cited by:

    1. Witold GRZEBISZ & Jarosław POTARZYCKI & Maria BIBER, 2018. "The early prognosis of tuber yield based on nitrogen status in potato tops," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 64(11), pages 539-545.
    2. Martin Král & Petr Dvořák & Ivana Capouchová, 2019. "The straw as mulch and compost as a tool for mitigation of drought impacts in the potatoes cultivation," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 65(11), pages 530-535.

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