Plant and Soil

, Volume 122, Issue 2, pp 169–175 | Cite as

Estimating the chemical compositions of soil solutions by obtaining saturation extracts or specific 1:2 by volume extracts

  • C. Sonneveld
  • J. Van den Ende
  • S. S. De Bes


In a study with 75 greenhouse soils, the ionic concentrations in soil solutions were compared with those in saturation extracts and in specific 1:2 by volume extracts. The soils involved represented a wide variety of soil types. The EC and all major ions were involved in the investigation.

Useful estimates of ionic concentrations in soil solutions could be obtained from the analytical data of saturation extracts. However, the preparation of the extract is laborious which is a drawback for use in routine soil testing A specific 1:2 by volume extract proved more practicable in this respect. A disadvantage of this extract is the low soil-to-water (i.e. 1:2) ratio of the soil suspension, which due to dissolution of some sparingly soluble salts and ion exchange reactions prevents a direct estimation of the chemical composition of the soil solution. To obtain a close relationship with the corresponding soil solution data, adjustment of the analytical data for the specific 1:2 by volume extract was necessary. These adjustments differ for the various ionic species.

Key words

dilution effects EC greenhouse soils nutrient elements saturation extract soil solution water extraction 


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Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • C. Sonneveld
    • 1
  • J. Van den Ende
    • 1
  • S. S. De Bes
    • 1
  1. 1.Glasshouse Crops Research StationNaaldwijkThe Netherlands

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