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2. Lawn aerator - Wikipedia

   en.wikipedia.org/wiki/Lawn_aerator

   This reduces compaction in the soil, and the holes can stay open for a long time allowing air, fertilisers, and water to reach the roots. Core aeration is suitable for heavy clay soils, and spike aeration is more suited to sandy or loamy soils. Powered aerator vs. manual aerator. Powered core aerator in use. Powered aerators employ the power ...

3. These Lawn Aerators Keep Your Grass Healthy and Green - AOL

   www.aol.com/lifestyle/lawn-aerators-keep-grass...

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4. Soil aeration - Wikipedia

   en.wikipedia.org/wiki/Soil_aeration

   Plug/core lawn aerator. 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 ]

5. Road roller - Wikipedia

   en.wikipedia.org/wiki/Road_roller

   Caterpillar soil compactor equipped with padfoot drum, being used to compact the ground before placing concrete Antique "Kemna" steamroller. A road roller (sometimes called a roller-compactor, or just roller [1]) is a compactor-type engineering vehicle used to compact soil, gravel, concrete, or asphalt in the construction of roads and foundations. [1]

6. Digging bar - Wikipedia

   en.wikipedia.org/wiki/Digging_bar

   Using digging bars to move rocks A girl and a man dig a hole with a heavy digging bar to plant a tree. Common uses of digging bars include breaking up clay, concrete, frozen ground, and other hard materials, moving or breaking up tree roots and obstacles, and making holes in the ground for fence posts.

7. Aerated lagoon - Wikipedia

   en.wikipedia.org/wiki/Aerated_lagoon

   Low speed surface aerator present such high diameter. Therefore SOTE for low speed surface aerators is about 2 to 2.5 kg O 2 /kWh. This is why low speed surface aerators are mostly used in sewage or industrial treatment as WWTP [clarification needed] are bigger and sparing energy becomes very interesting.