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Long-term effect of low potassium fertilization on its soil fractions

Author

Listed:
  • M. Madaras

    (Crop Research Institute, Prague, Czech Republic)

  • M. Koubová

    (Czech Geological Survey, Prague, Czech Republic)

  • M. Smatanová

    (Central Institute for Supervising and Testing in Agriculture, Brno, Czech Republic)

Abstract

In the Czech Republic, negative potassium (K) budget in agricultural soils is caused by non-fertilization by K and by a decline of manure application. We investigated soil available, fixed (acid-extractable, Kfix) and structural K pools in the field trial with graduated K application rate, established in 1972 at 8 sites of different climate and soils. The content of K-bearing minerals was evaluated on semi-quantitative scale by XRD diffraction. K-feldspars were a dominant source of structural K. Total soil K consisted of 1.7-7.1% of fixed K, which was in a positive relation to mixed-layer phyllosilicates. Differences in available K in treatments with K budget lower than -30 kg K/ha/year were small compared to those of fixed K. In control treatments, calculated average depletion of available K was -18 kg K/ha/year and the average depletion of fixed K was -12 kg K/ha/year; however at sites of higher altitude fixed K depletion prevailed. Fixed K accounted for 6-31% of the K budget. In negative K budget, monitoring of Kfix is advisable to avoid fertility loss of soil with low K supplying capacity.

Suggested Citation

  • 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.
    • Handle: RePEc:caa:jnlpse:v:60:y:2014:i:8:id:290-2014-pse
    DOI: 10.17221/290/2014-PSE
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    References listed on IDEAS

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    1. H.W. Scherer & H.E. Goldbach & J. Clemens, 2003. "Potassium dynamics in the soil and yield formation in a long-term field experiment," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 49(12), pages 531-535.
    2. M. Madaras & J. Lipavský, 2009. "Interannual dynamics of available potassium in a long-term fertilization experiment," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 55(8), pages 334-343.
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    Citations

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    Cited by:

    1. M. Madaras & M. Koubová, 2015. "Potassium availability and soil extraction tests in agricultural soils with low exchangeable potassium content," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 61(5), pages 234-239.
    2. Jiří Balík & Jindřich Černý & Martin Kulhánek & Ondřej Sedlář & Pavel Suran, 2019. "Balance of potassium in two long-term field experiments with different fertilization treatments," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 65(5), pages 225-232.
    3. 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.
    4. Fevzi AKBAS & Hikmet GUNAL & Nurullah ACIR, 2017. "Spatial variability of soil potassium and its relationship to land use and parent material," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 12(4), pages 202-211.

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