Effect of plant species, nitrogen fertilizer and grass age on the dynamics of intra-aggregate SOM

R. K. Koikkalainen; L. A. Dawson; R. W. Mayes; J. U. Smith

doi:10.1016/j.soilbio.2011.01.021

Effect of plant species, nitrogen fertilizer and grass age on the dynamics of intra-aggregate SOM

R. K. Koikkalainen^*
, L. A. Dawson
, R. W. Mayes
, J. U. Smith

^*Corresponding author for this work

Aberdeen Centre For Environmental Sustainability

The James Hutton Institute
University of Aberdeen

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

4 Citations (Scopus)

Abstract

Plant wax compounds (n-alkanes and alcohols) were used to trace C from the dominant pasture species to different water-stable aggregate (WSA) size classes to investigate if changes in the plant community composition caused by grass ley age and N amendment were reflected in the dynamics of intra-aggregate SOM. Age of the ley influenced the formation of aggregates, and fertilizer N application decreased %C and %N of the macroaggregates. Although changes in the plant community composition due to N amendment and ley age were reflected in the concentrations of plant wax compounds in the different WSA classes, the results of this study are more indicative of the direct effect of N fertilizer, than of the effect of dominant plant species, on intra-aggregate OM dynamics. The results of this study were found to support the suggestion that N amendments increase intra-aggregate OM dynamics especially in the smaller WSA size classes.

Original language	English
Pages (from-to)	1104-1107
Number of pages	4
Journal	Soil Biology and Biochemistry
Volume	43
Issue number	5
DOIs	https://doi.org/10.1016/j.soilbio.2011.01.021
Publication status	Published - May 2011

Bibliographical note

Funding Information:
Macaulay Development Trust (MDT) and Scottish Executive Environment and Rural Affairs Department (SEERAD) are acknowledged for funding R.K.K and BIOSS for assistance with statistical analysis. Serita Frey and Steve Chapman and two anonymous reviewers are acknowledged for their helpful comments on earlier versions of this manuscript.

Funding

Macaulay Development Trust (MDT) and Scottish Executive Environment and Rural Affairs Department (SEERAD) are acknowledged for funding R.K.K and BIOSS for assistance with statistical analysis. Serita Frey and Steve Chapman and two anonymous reviewers are acknowledged for their helpful comments on earlier versions of this manuscript.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 2 Zero Hunger

Keywords

Aggregation
Hydrocarbon markers
Lolium perenne
Managed grassland
Nitrogen
Plant community composition
Plant wax markers
Soil organic matter
Trifolium repens

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title = "Effect of plant species, nitrogen fertilizer and grass age on the dynamics of intra-aggregate SOM",

abstract = "Plant wax compounds (n-alkanes and alcohols) were used to trace C from the dominant pasture species to different water-stable aggregate (WSA) size classes to investigate if changes in the plant community composition caused by grass ley age and N amendment were reflected in the dynamics of intra-aggregate SOM. Age of the ley influenced the formation of aggregates, and fertilizer N application decreased \%C and \%N of the macroaggregates. Although changes in the plant community composition due to N amendment and ley age were reflected in the concentrations of plant wax compounds in the different WSA classes, the results of this study are more indicative of the direct effect of N fertilizer, than of the effect of dominant plant species, on intra-aggregate OM dynamics. The results of this study were found to support the suggestion that N amendments increase intra-aggregate OM dynamics especially in the smaller WSA size classes.",

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note = "Funding Information: Macaulay Development Trust (MDT) and Scottish Executive Environment and Rural Affairs Department (SEERAD) are acknowledged for funding R.K.K and BIOSS for assistance with statistical analysis. Serita Frey and Steve Chapman and two anonymous reviewers are acknowledged for their helpful comments on earlier versions of this manuscript.",

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doi = "10.1016/j.soilbio.2011.01.021",

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AU - Dawson, L. A.

AU - Mayes, R. W.

AU - Smith, J. U.

N1 - Funding Information: Macaulay Development Trust (MDT) and Scottish Executive Environment and Rural Affairs Department (SEERAD) are acknowledged for funding R.K.K and BIOSS for assistance with statistical analysis. Serita Frey and Steve Chapman and two anonymous reviewers are acknowledged for their helpful comments on earlier versions of this manuscript.

PY - 2011/5

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N2 - Plant wax compounds (n-alkanes and alcohols) were used to trace C from the dominant pasture species to different water-stable aggregate (WSA) size classes to investigate if changes in the plant community composition caused by grass ley age and N amendment were reflected in the dynamics of intra-aggregate SOM. Age of the ley influenced the formation of aggregates, and fertilizer N application decreased %C and %N of the macroaggregates. Although changes in the plant community composition due to N amendment and ley age were reflected in the concentrations of plant wax compounds in the different WSA classes, the results of this study are more indicative of the direct effect of N fertilizer, than of the effect of dominant plant species, on intra-aggregate OM dynamics. The results of this study were found to support the suggestion that N amendments increase intra-aggregate OM dynamics especially in the smaller WSA size classes.

AB - Plant wax compounds (n-alkanes and alcohols) were used to trace C from the dominant pasture species to different water-stable aggregate (WSA) size classes to investigate if changes in the plant community composition caused by grass ley age and N amendment were reflected in the dynamics of intra-aggregate SOM. Age of the ley influenced the formation of aggregates, and fertilizer N application decreased %C and %N of the macroaggregates. Although changes in the plant community composition due to N amendment and ley age were reflected in the concentrations of plant wax compounds in the different WSA classes, the results of this study are more indicative of the direct effect of N fertilizer, than of the effect of dominant plant species, on intra-aggregate OM dynamics. The results of this study were found to support the suggestion that N amendments increase intra-aggregate OM dynamics especially in the smaller WSA size classes.

KW - Aggregation

KW - Hydrocarbon markers

KW - Lolium perenne

KW - Managed grassland

KW - Nitrogen

KW - Plant community composition

KW - Plant wax markers

KW - Soil organic matter

KW - Trifolium repens

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M3 - Article

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SN - 0038-0717

VL - 43

SP - 1104

EP - 1107

JO - Soil Biology and Biochemistry

JF - Soil Biology and Biochemistry

IS - 5

ER -

Effect of plant species, nitrogen fertilizer and grass age on the dynamics of intra-aggregate SOM

Abstract

Bibliographical note

Funding

UN SDGs

Keywords

Access to Document

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