Changes in total soil organic carbon stocks and carbon fractions in sugarcane systems as affected by tillage and trash management in Queensland, Australia

Page, K. L., Bell, M. J. and Dalal, R. C. (2013) Changes in total soil organic carbon stocks and carbon fractions in sugarcane systems as affected by tillage and trash management in Queensland, Australia. Soil Research, 51 7-8: 608-614. doi:10.1071/SR12255


Author Page, K. L.
Bell, M. J.
Dalal, R. C.
Title Changes in total soil organic carbon stocks and carbon fractions in sugarcane systems as affected by tillage and trash management in Queensland, Australia
Journal name Soil Research   Check publisher's open access policy
ISSN 1838-675X
1838-6768
Publication date 2013-06-17
Year available 2013
Sub-type Article (original research)
DOI 10.1071/SR12255
Open Access Status Not yet assessed
Volume 51
Issue 7-8
Start page 608
End page 614
Total pages 7
Place of publication Collingwood, VIC, Australia
Publisher C S I R O Publishing
Language eng
Abstract The use of sugarcane trash (tops and residue) retention systems has been reported to lead to increases in total soil organic carbon (TOC) stocks. However, these increases have generally been small and confined to the top 0.05 m of the soil profile. It has been hypothesised that the amount of TOC sequestered could be increased if the intensive tillage that occurs at the end of a sugarcane ratoon cycle, which is known to decrease TOC, could be eliminated. This research examined the effect of no-till management and/or trash retention on four trial sites throughout Queensland, to assess the ability of this management to increase TOC stocks. Management effects on particulate organic carbon (POC), humus organic carbon (HOC), and resistant organic carbon (ROC) stocks were also assessed using mid-infrared spectroscopy. No significant changes in TOC, POC, HOC, or ROC were observed over either 0–0.1 or 0–0.3 m depth at any of the sites examined, when sites were considered as a whole. The results indicate that these management practices currently have limited capacity to increase TOC stocks on these soil types over 0–0.1 or 0–0.3 m depth for the purposes of carbon sequestration.
Keyword Humus
No till
Organic carbon stocks
Particulate organic carbon
Resistant organic carbon
Soil organic carbon sequestration
Sugarcane
Trash retention
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Alliance for Agriculture and Food Innovation
Official 2014 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 7 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 8 times in Scopus Article | Citations
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Created: Wed, 14 Aug 2013, 19:37:47 EST by Associate Professor Michael Bell on behalf of Centre for Crop Science