Field evaluation of soil moisture deficit thresholds for limits to trafficability with slurry spreading equipment on grassland
Article
Article Title | Field evaluation of soil moisture deficit thresholds for limits to trafficability with slurry spreading equipment on grassland |
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ERA Journal ID | 5277 |
Article Category | Article |
Authors | Vero, S. E. (Author), Antille, D. L. (Author), Lalor, S. T. J. (Author) and Holden, N. M. (Author) |
Journal Title | Soil Use and Management |
Journal Citation | 30 (1), pp. 69-77 |
Number of Pages | 9 |
Year | 2014 |
Publisher | John Wiley & Sons |
Place of Publication | Chichester, West Sussex. United Kingdom |
ISSN | 0266-0032 |
1475-2743 | |
Digital Object Identifier (DOI) | https://doi.org/10.1111/sum.12093 |
Web Address (URL) | http://onlinelibrary.wiley.com/doi/10.1111/sum.12093/pdf |
Abstract | This study investigated the extent of soil damage caused by field traffic associated with different levels of soil moisture deficit (SMD). The hybrid SMD model was used for computing temporal patterns of SMD which can be accurately predicted for a range of soil types in Ireland. The aim of this study was to determine SMD threshold limits to trafficability for incorporation into a decision support system for safe slurry spreading. A tractor and a fully loaded single-axle slurry tanker (total weight ca. 18 tonnes) were driven over well, moderate and poorly drained soils at SMD values of 0, 5, 10 and 20 mm during drying phases. The change in soil bulk density (SBD) was used as an indicator of soil compaction, and rut profile measurements were taken to determine soil deformation indicative of surface damage. The effect of traffic on the grass crop was determined by measuring dry matter yield at 30 and 60 days posttraffic in the wheel-rut and nontrafficked area. Results showed that the SMD at the time of traffic had a significant (P < 0.05) effect on the magnitude of the changes in SBD on soils of different drainage status, and on rut dimensions following traffic. DMY was significantly (P < 0.05) reduced on the wheeled compared with the nonwheeled soil. No differences in the magnitude of DMY loss were identified between the sites having different drainage status. An SMD value of 10 mm was suggested as an SMD threshold for trafficability for safe slurry spreading purposes. |
Keywords | bulk density; grassland; soil compaction; soil moisture; soil physical properties |
ANZSRC Field of Research 2020 | 300207. Agricultural systems analysis and modelling |
300201. Agricultural hydrology | |
410601. Land capability and soil productivity | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Teagasc Agriculture and Food Development Authority, Ireland |
University College Dublin, Ireland | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2754/field-evaluation-of-soil-moisture-deficit-thresholds-for-limits-to-trafficability-with-slurry-spreading-equipment-on-grassland
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