Organic matter mobilization as affected by soil-solution composition and prevailing clay minerals

Roberto S. Martínez; Pablo Zalba; María B. Villamil; Norman Peinemann

doi:10.1081/CSS-120005763

Organic matter mobilization as affected by soil-solution composition and prevailing clay minerals

Roberto S. Martínez, Pablo Zalba, María B. Villamil, Norman Peinemann

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

Abstract

Laboratory experiments were conducted to study organic matter (OM) loss from soil columns with different clay mineral composition and treated with high sodium (Na) and potassium (K) saline solutions (SAR and PAR = 25). Removal of organic and inorganic colloids was evaluated by determining organic matter content in the soil at the end of the trial and measuring absorbency of the percolated solutions. Though clay dispersion after magnesium (Mg) treatment was marked in the case of illitic and smectitic soils, little effect was detected in kaolinitic soil. For treatments with solutions containing Na, the highest removal of organic colloids was observed in illitic and kaolinitic soils. In smectitic soil this effect was more pronounced with calcium (Ca) in combination with Na and K. These findings have significance to explain differences in OM mobilization in salt affected depressions of different composition.

Original language	English (US)
Pages (from-to)	2291-2299
Number of pages	9
Journal	Communications in Soil Science and Plant Analysis
Volume	33
Issue number	13-14
DOIs	https://doi.org/10.1081/CSS-120005763
State	Published - 2002
Externally published	Yes

ASJC Scopus subject areas

Agronomy and Crop Science
Soil Science

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title = "Organic matter mobilization as affected by soil-solution composition and prevailing clay minerals",

abstract = "Laboratory experiments were conducted to study organic matter (OM) loss from soil columns with different clay mineral composition and treated with high sodium (Na) and potassium (K) saline solutions (SAR and PAR = 25). Removal of organic and inorganic colloids was evaluated by determining organic matter content in the soil at the end of the trial and measuring absorbency of the percolated solutions. Though clay dispersion after magnesium (Mg) treatment was marked in the case of illitic and smectitic soils, little effect was detected in kaolinitic soil. For treatments with solutions containing Na, the highest removal of organic colloids was observed in illitic and kaolinitic soils. In smectitic soil this effect was more pronounced with calcium (Ca) in combination with Na and K. These findings have significance to explain differences in OM mobilization in salt affected depressions of different composition.",

author = "Mart{\'i}nez, {Roberto S.} and Pablo Zalba and Villamil, {Mar{\'i}a B.} and Norman Peinemann",

note = "Funding Information: The authors wish to thank the Consejo Nacional de Investigaciones Cient{\'i}ficas y T{\'e}cnicas (CONICET), which provided funds and personnel for this research.",

year = "2002",

doi = "10.1081/CSS-120005763",

language = "English (US)",

volume = "33",

pages = "2291--2299",

journal = "Communications in Soil Science and Plant Analysis",

issn = "0010-3624",

publisher = "Taylor and Francis Ltd.",

number = "13-14",

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T1 - Organic matter mobilization as affected by soil-solution composition and prevailing clay minerals

AU - Martínez, Roberto S.

AU - Zalba, Pablo

AU - Villamil, María B.

AU - Peinemann, Norman

N1 - Funding Information: The authors wish to thank the Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), which provided funds and personnel for this research.

PY - 2002

Y1 - 2002

N2 - Laboratory experiments were conducted to study organic matter (OM) loss from soil columns with different clay mineral composition and treated with high sodium (Na) and potassium (K) saline solutions (SAR and PAR = 25). Removal of organic and inorganic colloids was evaluated by determining organic matter content in the soil at the end of the trial and measuring absorbency of the percolated solutions. Though clay dispersion after magnesium (Mg) treatment was marked in the case of illitic and smectitic soils, little effect was detected in kaolinitic soil. For treatments with solutions containing Na, the highest removal of organic colloids was observed in illitic and kaolinitic soils. In smectitic soil this effect was more pronounced with calcium (Ca) in combination with Na and K. These findings have significance to explain differences in OM mobilization in salt affected depressions of different composition.

AB - Laboratory experiments were conducted to study organic matter (OM) loss from soil columns with different clay mineral composition and treated with high sodium (Na) and potassium (K) saline solutions (SAR and PAR = 25). Removal of organic and inorganic colloids was evaluated by determining organic matter content in the soil at the end of the trial and measuring absorbency of the percolated solutions. Though clay dispersion after magnesium (Mg) treatment was marked in the case of illitic and smectitic soils, little effect was detected in kaolinitic soil. For treatments with solutions containing Na, the highest removal of organic colloids was observed in illitic and kaolinitic soils. In smectitic soil this effect was more pronounced with calcium (Ca) in combination with Na and K. These findings have significance to explain differences in OM mobilization in salt affected depressions of different composition.

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JF - Communications in Soil Science and Plant Analysis

SN - 0010-3624

IS - 13-14

ER -

Organic matter mobilization as affected by soil-solution composition and prevailing clay minerals

Abstract

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