To calculate the Soil Composition (S):
\[ S = \frac{A \times X + B \times Y + C \times Z}{100} \]
Where:
A soil triangle, also known as a soil texture triangle, is a diagram that is used by soil scientists and geologists to visually classify soils based on their proportion of sand, silt, and clay particles. The triangle is divided into various sections, each representing a different type of soil, such as loam, sandy clay, or silty clay. The three sides of the triangle represent the percentage of sand, silt, and clay, respectively. By plotting the percentages of these three components, one can determine the soil’s texture class. This classification is important as it helps in understanding the soil’s properties, such as its water-holding capacity, nutrient availability, and its suitability for different types of plants or crops.
Let's assume the following values:
Using the formula:
\[ S = \frac{40 \times 1 + 40 \times 2 + 20 \times 3}{100} = 1.80 \]
The Soil Composition is 1.80%.