Use of ion-selective electrodes for determination of content of potassium in Egner-Rhiem soil extracts

J. Cieśla, M. Ryżak, A. Bieganowski, P. Tkaczyk and R.T. Walczak
Additional contact information
J. Cieśla: Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland
M. Ryżak: Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland
A. Bieganowski: Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland
P. Tkaczyk: Regional Chemical-Agricultural Station in Lubin, Lubin, Poland
R.T. Walczak: Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland

Research in Agricultural Engineering, 2007, vol. 53, issue 1, 29-33

Abstract: Potassium is one of the most important nutrients for plants and its content in the soil should be monitored. In the precision agriculture, which is recommended now, the ion selective electrodes are tested to determine chemical properties of the soil. The objective of this work was an evaluation of use of the valinomycin-based ion selective sensors for determination of assimilated potassium in Egner-Rhiem soil extracts. Flame photometry was used as a reference method. Results obtained from potentiometric and photometric methods in soil extracts correlated linearly (R2 = 0.84). Analysis of soil extracts by the ion selective electrodes is simple and there is not a need for calcium ions precipitation.

Keywords: potassium; ISE (ion selective electrode); Egner-Rhiem soil extract; precision agriculture (search for similar items in EconPapers)
Date: 2007
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://rae.agriculturejournals.cz/doi/10.17221/2130-RAE.html (text/html)
http://rae.agriculturejournals.cz/doi/10.17221/2130-RAE.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlrae:v:53:y:2007:i:1:id:2130-rae

DOI: 10.17221/2130-RAE

Access Statistics for this article

Research in Agricultural Engineering is currently edited by Bc. Michaela Polcarová

More articles in Research in Agricultural Engineering from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().