Andosol clay re-aggregation observed at the microscale during physical organic matter fractionation

Thiago M. Inagaki; Carsten W. Mueller; Johannes Lehmann; Ingrid Kögel-Knabner

doi:10.1002/jpln.201800421

Andosol clay re-aggregation observed at the microscale during physical organic matter fractionation

Thiago M. Inagaki
, Carsten W. Mueller
, Johannes Lehmann
, Ingrid Kögel-Knabner

Chair of Soil Science

Technical University of Munich
Cornell University

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The high aggregate stability of Andosols and the direct effects of sample drying led to several inconsistencies during physical soil organic matter fractionation. We have determined that NaCl addition displayed little influence on clay dispersion. At the microscale, we observed the re-aggregation of the clay fraction caused by freeze-drying. This issue was avoided by analyzing aliquots of soil suspension. Thus, we recommend reserving a small soil liquid aliquot to be subjected to microscopy analysis.

Original language	English
Pages (from-to)	145-148
Number of pages	4
Journal	Journal of Plant Nutrition and Soil Science
Volume	182
Issue number	2
DOIs	https://doi.org/10.1002/jpln.201800421
State	Published - Apr 2019

Keywords

allophane
carbon
microscopy
short range order minerals
soil dispersion

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10.1002/jpln.201800421

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title = "Andosol clay re-aggregation observed at the microscale during physical organic matter fractionation",

abstract = "The high aggregate stability of Andosols and the direct effects of sample drying led to several inconsistencies during physical soil organic matter fractionation. We have determined that NaCl addition displayed little influence on clay dispersion. At the microscale, we observed the re-aggregation of the clay fraction caused by freeze-drying. This issue was avoided by analyzing aliquots of soil suspension. Thus, we recommend reserving a small soil liquid aliquot to be subjected to microscopy analysis.",

keywords = "allophane, carbon, microscopy, short range order minerals, soil dispersion",

author = "Inagaki, \{Thiago M.\} and Mueller, \{Carsten W.\} and Johannes Lehmann and Ingrid K{\"o}gel-Knabner",

note = "Publisher Copyright: {\textcopyright} 2019 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2019",

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T1 - Andosol clay re-aggregation observed at the microscale during physical organic matter fractionation

AU - Inagaki, Thiago M.

AU - Mueller, Carsten W.

AU - Lehmann, Johannes

AU - Kögel-Knabner, Ingrid

PY - 2019/4

Y1 - 2019/4

N2 - The high aggregate stability of Andosols and the direct effects of sample drying led to several inconsistencies during physical soil organic matter fractionation. We have determined that NaCl addition displayed little influence on clay dispersion. At the microscale, we observed the re-aggregation of the clay fraction caused by freeze-drying. This issue was avoided by analyzing aliquots of soil suspension. Thus, we recommend reserving a small soil liquid aliquot to be subjected to microscopy analysis.

AB - The high aggregate stability of Andosols and the direct effects of sample drying led to several inconsistencies during physical soil organic matter fractionation. We have determined that NaCl addition displayed little influence on clay dispersion. At the microscale, we observed the re-aggregation of the clay fraction caused by freeze-drying. This issue was avoided by analyzing aliquots of soil suspension. Thus, we recommend reserving a small soil liquid aliquot to be subjected to microscopy analysis.

KW - allophane

KW - carbon

KW - microscopy

KW - short range order minerals

KW - soil dispersion

UR - https://www.scopus.com/pages/publications/85061035977

U2 - 10.1002/jpln.201800421

DO - 10.1002/jpln.201800421

M3 - Article

AN - SCOPUS:85061035977

SN - 1436-8730

VL - 182

SP - 145

EP - 148

JO - Journal of Plant Nutrition and Soil Science

JF - Journal of Plant Nutrition and Soil Science

IS - 2

ER -

Andosol clay re-aggregation observed at the microscale during physical organic matter fractionation

Abstract

Keywords

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