Short-term impact of an occasional tillage on microbial communities in a Vertosol after 43 years of no-tillage or conventional tillage

Rincon-Florez, Vivian A., Ng, Clement, Dang, Yash P., Schenk, Peer M. and Carvalhais, Lilia C. (2016) Short-term impact of an occasional tillage on microbial communities in a Vertosol after 43 years of no-tillage or conventional tillage. European Journal of Soil Biology, 74 32-38. doi:10.1016/j.ejsobi.2016.03.001


Author Rincon-Florez, Vivian A.
Ng, Clement
Dang, Yash P.
Schenk, Peer M.
Carvalhais, Lilia C.
Title Short-term impact of an occasional tillage on microbial communities in a Vertosol after 43 years of no-tillage or conventional tillage
Journal name European Journal of Soil Biology   Check publisher's open access policy
ISSN 1164-5563
1778-3615
Publication date 2016-05-01
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.ejsobi.2016.03.001
Open Access Status Not Open Access
Volume 74
Start page 32
End page 38
Total pages 7
Place of publication Cedex France
Publisher Elsevier Masson
Language eng
Formatted abstract
Occasional strategic tillage (ST) has been suggested as a possible solution to manage herbicide-resistant weeds and control crop diseases in Australia's northern grain-growing regions. We evaluated the impact of ST on microbial communities as indicators of soil quality for two distinct tillage systems that have been applied to a Vertosol for 43 years (no-tillage – NT or conventional tillage – CT) and two stubble management practices (retention – SR or burning – SB). Soil samples were collected 15 weeks after ST and analysed for total enzymatic activity (fluorescein diacetate assay), metabolic diversity (Ecoplates Biolog®) and bacterial community structure (terminal restriction fragment length polymorphism). There was no significant effect of ST on the measured biological attributes. However, total enzymatic activity for treatments under CTSR and CTSR-ST were significantly higher compared with NTSR-ST (+0.8 fluorescein μg ml−1 g−1 soil h−1, P < 0.01). Differences may be attributed to a significant increase in bulk density for CTSR treatment (P < 0.05) and an increment in bulk density on CTSR-ST plots. The lack of changes may be attributed to a high resistance and/or resilience of soil microbial communities after 15 weeks of tillage. More studies on the long-term effect of ST are required to assess the impact on soil biological properties.
Keyword Catabolic activity
Genetic fingerprinting
One-time tillage
Clay soil
Enzyme activity
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Agriculture and Food Sciences
 
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