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To use a soil texture triangle, you must know the percentages of sand, silt and clay in the soil. Soil texture, which refers to the relative proportion of mineral particles of various sizes in soil, is among the most important soil characteristics.What do the 12 sections of the triangle represent?
The 12 sections of the triangle correspond to the 12 soil categories. It's a triangle that's split into 12 sections. Notice in the diagram above how there's diagonal and horizontal lines running through this triangle. These lines give you the intersection points from all three sides and represent the percentage of clay, silt, and sand.How do you find the composition of soil in a triangle?
Then you use the lines that are crisscrossing the triangle to help you figure out what kind of composition your soil has. Follow the diagonal lines leaning to the left to find your sand composition. Use the horizontal lines for your clay composition. Then use the diagonal lines leaning to the right for your silt composition.What is the texture of soil?
Soil texture depends on its composition and the relative portions of clay, sand, and silt. In sedimentology, clay is defined as particles of earth between 1µm and 3.9µm in diameter. (Not to be confused with the chemical definition of clay, which is a mixture of hydrous aluminium phyllosilicate particles and water.)