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Soil Texture and Structure

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→‎Soils Structure

=== Soil Texture and the Soils Triangle ===

[[File:Site evaluation 03.jpg|right|200px]]

Soils are composed of individual particles of sand, silt and clay, as well as organic matter in various stages of decomposition. The soils triangle shown to the left was developed to classify a soil sample based on its texture, which is based on the relative amounts of sand, silt and clay. Once a soil texture has been identified, you can readily obtain information about the nature of the soils.

=== Soils Structure ===

[[File:Soil-texture 01.jpg|right|200px]]

In addition to the soil texture, how the soils were laid down over geologic time influences how water moves through the soils.

One of the best clues to the ability of water to move through soils is the presence of roots. Plant roots require oxygen and will not grow in soils zones where oxygen is limited by soil density or presence of groundwater. Large and well-developed root systems in soil samples are a strong indication that water will move effectively through the soil.

 

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