Landscaping License Practice Test

Which technique is typically used to improve soil structure?

1. Overseeding

2. Mulching

3. Soil aeration

4. Scalping

The correct answer is: Soil aeration

Soil aeration is an essential technique used to improve soil structure because it facilitates the movement of air, water, and nutrients into the soil. By creating small holes in the soil, aeration helps reduce compaction, which can negatively affect root growth and water infiltration. This process increases the soil's ability to hold moisture and nutrients, promoting healthier plant growth. Additionally, aeration encourages microbial activity in the soil, further enhancing its overall health and structure. Overseeding can help establish a thicker lawn and improve surface coverage but does not directly address soil structure. Mulching protects the soil surface and retains moisture but does not alter the soil's physical properties. Scalping involves cutting grass down to a very short height, which can stress the grass and does not contribute positively to soil structure.