Deep roots and soil structure

Gao, W. and Hodgkinson, Laura and Jin, K. and Watts, Chris W. and Ashton, Rhys W. and Shen, J. and Ren, T. and Dodd, Ian Charles and Binley, Andrew Mark and Phillips, Andrew L. and Hedden, P. and Hawkesford, Malcolm J. and Whalley, William R. (2016) Deep roots and soil structure. Plant, Cell and Environment, 39 (8). pp. 1662-1668. ISSN 0140-7791

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Abstract

In this opinion article we examine the relationship between penetrometer resistance and soil depth in the field. Assuming that root growth is inhibited at penetrometer resistances > 2.5 MPa, we conclude that in most circumstances the increases in penetrometer resistance with depth are sufficiently great to confine most deep roots to elongating in existing structural pores. We suggest that deep rooting is more likely related to the interaction between root architecture and soil structure than it is to the ability of a root to deform strong soil. Although the ability of roots to deform strong soil is an important trait, we propose it is more closely related to root exploration of surface layers than deep rooting.

Item Type:
Journal Article
Journal or Publication Title:
Plant, Cell and Environment
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1300/1314
Subjects:
ID Code:
78688
Deposited By:
Deposited On:
11 Mar 2016 12:02
Refereed?:
Yes
Published?:
Published
Last Modified:
22 Sep 2020 02:36