Aggregate stability is a measure of how well a soil aggregate maintains its structural integrity when submerged in water. This measurement demonstrates how soil microorganisms and plants interact in the rhizosphere and how their interactions build soil structure. Poorly aggregated soil will have a tendency to literally fall apart under heavy precipitation leading to both poor infiltration and unwanted runoff. Good aggregate stability creates space for water infiltration, root growth and a thriving community of microorganisms in the soil.
