Encyclopedia of Agrophysics

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

Root Responses to Soil Physical Limitations

  • A. Glyn BengoughEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-90-481-3585-1_136

Synonyms

Effects of soil physical properties on root growth; Hypoxia; Root responses to mechanical impedance; Water stress

Definition

Root responses: Changes in the growth of individual roots and of the root system as a whole. This includes changes in elongation rate, diameter, number of roots, and branching pattern.

Soil physical limitations: The physical properties (soil strength, soil aeration, soil matric potential) of a soil that may restrict root growth.

Context – why soil physical limitations to roots are increasingly important

For good growth, plants require a root system of sufficient size to obtain water and mineral nutrients from the soil they are growing in. In nutrient-poor or dry soils, limitations to root system growth will often restrict water and nutrient uptake, resulting in slower plant growth and restricting crop yield of agricultural plants. Physical limitations – particularly mechanical impedance, hypoxia, water stress, and non-optimal temperature – represent a...

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Scottish Crop Research Institute (SCRI)DundeeUK