Encyclopedia of Agrophysics

2011 Edition
| Editors: Jan Gliński, Józef Horabik, Jerzy Lipiec


Reference work entry
DOI: https://doi.org/10.1007/978-90-481-3585-1_135


The hidden half (of plant) of the hidden half (of roots)


Considering the phenomena occurring at the root–soil boundary, it is essential to define such terms as: root–soil interface, rhizoplane, rhizosphere, and bulk soil. The term root–soil interface is defined as a boundary between the outermost root tissues and the particles of soil which are closest to them. The rhizoplane refers to the zone of the external root surface itself (it is the external root surface) (Bowen and Rovira, 1991). The rhizosphere is a zone of soil or other growing medium in which the environment for microbial activity in general is influenced by any root growing in it, distinguishing it from the “bulk” or “non-rhizosphere” soil, which is influenced by growing roots only by the withdrawal of water and nutrients. A reasonable assumption is that the diameter of the rhizosphere at least equals that of the cylinder of soil around a root which root hairs explore and into which they may release...

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© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Institute of AgrophysicsPolish Academy of SciencesLublinPoland