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A lawn aerator achieves this by removing small cores of soil. The ½-inch wide and 2- to 3-inch-long soil cores are left on the soil surface, where they slowly break down, replenishing the soil.
Core lawn aerator attachment on a conventional front-tine garden tiller. A lawn aerator is a garden tool designed to create holes in the soil in order to help lawn grasses grow. [1] In compacted lawns, aeration improves soil drainage and encourages worms, microfauna and microflora which require oxygen. [2]
Soil aeration is the mechanism of improving the exchange of gases between the atmosphere and soil. Through soil microbial activity and plant root respiration, certain gases such as oxygen will be depleted in the soil, while others, such as carbon dioxide, will build up in the soil. [1] Lack of oxygen in the soil can impact plant growth.
These weed control methods also effect the structure of the soil. The use of mulches can help decrease erosion, decrease water evaporation from the soil, as well as improve the soil structure by increasing the amount of organic matter. Tillage practices can help decrease compaction and aerate the soil.
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Aeration in this context refers to the mechanisms by which air is delivered to the soil. In natural ecosystems soil aeration is chiefly accomplished through the vibrant activity of the biota. Humans commonly aerate the soil by tilling and plowing, yet such practice may cause degradation. Porosity refers to the air-holding capacity of the soil.
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