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Weathering/Erosion

Soil Formation neumeyer6

TermDefinition
Bedrock solid layer of rock beneath loose soil, once exposed bedrock gradually weathers in smaller particles that are basic material of soil.
Soil loose mixture of rock particles, minerals, decayed organic material, air, water in witch plants can grow.
Humus Dark colored substance in soil from the decayed organic material.
Fertility Measures how well the soil supports plant growth.
Loam Soil that is made up of equal parts of clay, sand , and silt. Best for growing most types of crops.
Soil horizon soil that differs in the color and texture from the layers above and below it.
Top soil The A horizon or the top layer, it is crumbly dark brown mixture of humus, clay and other minerals.
Sub soil The B horizon below the top soil consisting of clay and other particles washed down from the top soil, but little humus .
Sea horizon The bottom layer containing partly weathered rocks.
Soil conservation Management of soil to prevent its n distruction. It can be conserved threw the following.
Contour plowing Farmers plow the fields along the curbs of the slopes to help slow runoff or access rain fall witch may wash away soil.
Conservation plowing Farmers leave dead weeds and stalks of previous years crops to return all the nutrients to soil, helps return moisture and holds soil in place
Croprotation Farmers plant different crops in each field each year.
Created by: nate necas
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