As lawns age or sustain heavy use from play, sports activities, pets, and heavy accumulation of snow, soil compaction can result. Soil compacting forces are most severe in poorly drained or wet sites. Compaction greatly reduces the pores space within the soil that would normally hold air.
Roots require oxygen to grow and absorb nutrients and water. Compaction reduces total pores space and the amount of air within the soil. It has a negative impact on nutrient uptake and water infiltration, in addition to being a physical barrier to root growth. This results in poor top growth and lawn deterioration.
Core-aeration can benefit your lawn by:
- Loosens compacted soil enhancing infiltration of rainfall or irrigation by reducing water runoff.
- Increases the availability of nutrients
- Helps prevent fertilizer and pesticide run-off from overly compacted areas.
- Enhances oxygen levels in the soil, stimulating root growth and enhancing the activity of thatch-decomposing organisms.
- While removing cores of soil, the spoons or tines also sever roots, rhizomes and stolons. Grass plants are stimulated to produce new shoots and roots that “fill up” the holes in the lawn and increase the density of the turf.
- Increases the lawn's drought tolerance and improves its overall health.