Decomposition in a peaty soil improved for pastoral agriculture

D. W. Hopkins*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The rates of CO2 production and decomposition of 13C-enriched Lolium perenne leaves and roots in soil from the surface five cm of two upland stagnohumic gley soils were measured in laboratory experiments. One of the soils had been limed (pH 6.8) 13 years earlier. The other was unlimed (pH 3.7). Liming increased the rate of CO2 release from soil to which no L. perenne had been added. About 30% of the 13C in L. perenne leaves remained in both limed and unlimed soil after 224 days. By contrast, less 13C remained in the limed soil amended with L. perenne roots (44%) than in the limed soils (55%). Although the daily rate of CO2 from the plant material-amended soils was initially greater in the improved than in the unimproved soil, it subsequently declined more rapidly.

Original languageEnglish
Pages (from-to)104-106
Number of pages3
JournalSoil Use and Management
Volume13
Issue number2
DOIs
Publication statusPrint publication - Jun 1997
Externally publishedYes

Keywords

  • Carbon dioxide
  • Decomposition
  • Grassland improvement
  • Liming
  • Lolium perenne
  • Peat soils
  • UK

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