Monday, October 22, 2012

An Introduction to the Understanding of Soil

There are many different types of soil that are distinguished by different characteristics.

One way to characterized soil is by determining the percent of clay, silt, and sand within a sample of soil. These percerntages always add up to one hundred and can determine the general type of soil in the sample. This is found by using a soil texture diagram. Below is an example of this diagram.


Another way to identify the type of soil in a sample is to use the Munsell SOil Color chart. This chart uses three characteristics to determine the type of soil: hue, lightness, and color purity. This chart is best used as a tree dimensional representation or as a flip book. Below are two examples.



Soil comes in many different types. The most prominent twelve categories are called the 12 Soil Orders.  The following link leads to more information about each soil order and below is a picture of each.  http://www.soils.usda.gov/technical/soil_order


Georgia contains many different types of soil based on the area. The most well know type of soil in Georgia is red clay and is a result of  the decomposition of organic and inrganic materials in the soil.The red color comes from long-term weathering that leaves behind iron oxide.






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