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Spatial variability of soil potassium and its relationship to land use and parent material

Author

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  • Fevzi AKBAS

    (Konya Soil, Water and Deserting Control Research Center Meram, Konya, Turkey)

  • Hikmet GUNAL

    (Soil Science and Plant Nutrition Department, Faculty of Agriculture, Gaziosmanpasa University, Tokat, Turkey)

  • Nurullah ACIR

    (Soil Science and Plant Nutrition Department, Faculty of Agriculture, Ahi Evran University, Kirsehir, Turkey$2)

Abstract

Information on the spatial distribution of plant nutrients is a prerequisite to predict their behaviour and to monitor the fertility in a watershed. This study was conducted to evaluate variations of plant available potassium (PAK) and non-exchangeable potassium (NEK) of a watershed with different land use and parent materials. Eight hundred soil samples were taken from 0-30 and 30-60 cm depths across the Kazova watershed of 20 656 ha in size. Average PAK was 152.8 mg/K kg in surface layers and 167.2 mg/kg in subsurface layers. NEK was 925 mg K/kg in surface and 167.2 mg K/kg in subsurface layers. All forms of K were the lowest in soils formed over serpentinite. Soils in pastures had the highest PAK and NEK. Both K forms were positively related to clay content. Spatial variability patterns of PAK and NEK were similar and consistent at both soil depths. The variation in parent material and land use is considered as the main cause for large variations of potassium forms.

Suggested Citation

  • 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.
    • Handle: RePEc:caa:jnlswr:v:12:y:2017:i:4:id:32-2016-swr
    DOI: 10.17221/32/2016-SWR
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    References listed on IDEAS

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    1. M. Kayser & M. Benke & J. Isselstein, 2012. "Potassium leaching following silage maize on a productive sandy soil," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 58(12), pages 545-550.
    2. 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.
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    Cited by:

    1. Miriam Kizeková & Radoslava Kanianska & Ľubica Jančová & Jozef Čunderlík & Zuzana Dugátová, 2024. "Carbon and Nitrogen Stocks in Agricultural Soils under Different Natural Conditions and Management in Slovakia," Land, MDPI, vol. 13(2), pages 1-17, February.

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