Problems

 

The basic idea behind lawn aeration is that, like you, your lawn and the soil under it need to breathe. Providing much-needed lawn aeration for your grass entails dealing with thatch. The build-up of lawn thatch makes it difficult for your lawn to breathe. Lawn aeration performed in spring or fall helps control lawn thatch.

 

As lawns age or sustain heavy use from play, sports activities, pets, vehicle traffic and parking, soil compaction can result. Soil compacting forces are most severe in poorly drained or wet sites. Compaction greatly reduces the pore space within the soil that would normally hold air. Roots require oxygen to grow and absorb nutrients and water. Compaction reduces total pore 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

 

Soil compaction is the most common example of soil deficient in air. The growth habits of grass in compacted soil are shallow root development, a substantial decrease in the number of grass plants per square foot, and an inability to properly use applied fertilizers.

 

Grass roots need air as well as water and fertilizer. The grass can actually poison itself as a result of the various chemical processes that occur in the individual grass plants if the grass roots do not have enough air. Soil that lacks sufficient air can result in; slow growth in the affected grass, excess irrigation runoff due to poor permeability, shallow root systems, and a lawn that's highly susceptible to insects, disease, and heat damage.