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Gewählte Publikation:

Kuderna, M., Pötsch, E., Blum, W. E. H..
(1993): Zur Wahl des Extraktionsmittels bei der Nmin-Bestimmung.
Die Bodenkultur, 44, 7-15

Abstract:
1.0 M KCl, 0.5 M K2SO4 and 0.0125 M CaCI2 were compared as extractants for N(min) (NH4+ and NO3-) using soil samples from arable land and grassland. No significant differences could be found for NO3--extraction, whereas significantly higher amounts of NH4+ were extracted with 1.0 M KCI and 0.5 M K2SO4 in comparison with 0.0125 M CaCl2. The relation between the amounts of extractable NH4+ was not constant. In the grassland samples a significant influence of the organic matter content was observed. With low organic matter contents, up to three times more NH4+ was extracted with 1.0 M KCI in comparison with 0.0125 M CaCl2.
Autor*innen der BOKU Wien:
Blum Winfried E.H.

Find related publications in this database (Keywords)
NMIN
KCL
K2SO4
CACL2
SOIL ORGANIC MATTER


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