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