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Soil

Soil Formation, Horizons, Conservation

TermDefinition
Soil loose mixture of rock particles, minerals, decayed organic material, air, and water in which plants grow.
Fertility measure of how well soil supports growth (plants)
Humus dark colored substance in soil from decayed organic material.
Bedrock solid layer of rock beneath the soil. If exposed, it will weather.
Soil Horizons 3 layers of soils that differ in color and texture
What are the 3 Layers of soil called? Horizon A, Horizon B & Horizon C
Horizon A topsoil, darker colored, crumbly, humus clay, and other minerals.
Horizon B subsoil, mostly clay and other particles. Washed down or ‘leaching’ from Horizon A. There is little humus here.
Horizon C bottom layer containing weather rock.
Soil Conservation the management of soil to maintain fertility.
What are 3 Soil Conservation methods? Crop rotation, Contour Plowing, Conservation Plowing
Crop Rotation rotate crops in fields each year. A B C D fields
Contour Plowing farming along a slope to stop water run-off.
Conservation Plowing ‘Compost Farming’ is adding dead weeds, stalks or organic material back into the soil (i.e. corn stalks from a corn maze)
Created by: HERBlackburn
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