Cailian Yu
The effects of soil compaction on wheat seedling root growth are specific to soil texture and soil moisture status
Yu, Cailian; Mawodza, Tinashe; Atkinson, Brian S.; Atkinson, Jonathan A.; Sturrock, Craig J.; Whalley, Richard; Hawkesford, Malcolm J.; Cooper, Hannah; Zhang, Xiaoxian; Zhou, Hu; Mooney, Sacha J.
Authors
Tinashe Mawodza
Brian S. Atkinson
JONATHAN ATKINSON JONATHAN.ATKINSON@NOTTINGHAM.AC.UK
Assistant Professor
Dr CRAIG STURROCK craig.sturrock@nottingham.ac.uk
Principal Research Fellow
Richard Whalley
Malcolm J. Hawkesford
HANNAH COOPER Hannah.Cooper@nottingham.ac.uk
Assistant Professor in Agronomy
Xiaoxian Zhang
Hu Zhou
SACHA MOONEY sacha.mooney@nottingham.ac.uk
Professor of Soil Physics
Abstract
Soil structure is a crucial soil physical property that determines a soil's ability to support the growth and development of plants. Soil compaction modifies soil structure by reducing pore space between soil particles thereby leading to a denser soil fabric. This often limits root growth by increasing soil strength and penetration resistance requiring roots to increase the energy needed to elongate and explore deeper soil. Apart from soil compaction, soil moisture also plays an important role in determining how resistant soil is to root penetration. An understanding of how the synergy of both compaction and moisture content affect root growth is essential to improving plant productivity. We used wheat (Triticum aestivum) seedlings to investigate the differences in root architectural properties using X-ray Computed Tomography imaging under three different compaction levels (1.3, 1.5 and 1.7 Mg m−3) maintained at two different water contents (100% and 70% of field capacity). This was performed on soils of two different textures, a sandy loam and a sandy clay loam. Soil compaction to 1.7 g cm−3 significantly reduced root length, volume and surface area compared to lower compaction levels. Increased soil compaction also resulted in increased root growth angle in the sandy clay loam. Compaction reduced gas diffusivity in both soils (as determined by modelling). Soil moisture on the other hand had a significant impact on average root diameter; plants grown at 100% of field capacity had a higher average root diameter than those at 70% field capacity. Compaction up to 1.7 Mg m−3 adversely effected wheat root growth in both soil textures regardless of moisture content.
Citation
Yu, C., Mawodza, T., Atkinson, B. S., Atkinson, J. A., Sturrock, C. J., Whalley, R., …Mooney, S. J. (2024). The effects of soil compaction on wheat seedling root growth are specific to soil texture and soil moisture status. Rhizosphere, 29, Article 100838. https://doi.org/10.1016/j.rhisph.2023.100838
Journal Article Type | Article |
---|---|
Acceptance Date | Dec 12, 2023 |
Online Publication Date | Dec 15, 2023 |
Publication Date | 2024-03 |
Deposit Date | Dec 13, 2023 |
Publicly Available Date | Dec 16, 2024 |
Journal | Rhizosphere |
Electronic ISSN | 2452-2198 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 29 |
Article Number | 100838 |
DOI | https://doi.org/10.1016/j.rhisph.2023.100838 |
Keywords | Soil bulk density; Soil moisture; Soil compaction; Root length; X-ray Computed Tomography |
Public URL | https://nottingham-repository.worktribe.com/output/28426720 |
Publisher URL | https://www.sciencedirect.com/science/article/pii/S2452219823001775 |
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Licence
https://creativecommons.org/licenses/by/4.0/
Publisher Licence URL
https://creativecommons.org/licenses/by/4.0/
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