Water moves through soil under the combined influence of gravity, capillary forces and differences in soil water potential.
The relative importance of each mechanism changes continuously according to soil texture, structure, moisture content and environmental conditions.
Immediately after irrigation or rainfall, gravitational flow generally dominates.
As excess water drains, capillary forces progressively become more important, redistributing moisture throughout the soil profile.
Plants continuously modify this balance by extracting water through their root systems, while evaporation removes moisture from the soil surface.
The hydraulic state of the soil is therefore constantly evolving.
Radixora considers this dynamic behaviour a central element of the engineering model.