Which of the following are parameters of the soil triangle?

Which of the following are parameters of the soil triangle?

• A. Clay, Silt, and Sand
• B. Clay
• C. Silt and Sand
• D. Clay and Sand

Answer: (B)

The soil texture triangle is defined by three components that sum to 100%: clay, silt, and sand. These three fractions are the parameters that determine a soil’s texture, and each point inside the triangle represents a particular combination of all three. You can’t describe a texture accurately with just one value, like clay alone, because the amounts of silt and sand also shape the texture. So the full set of parameters is clay, silt, and sand; knowing only clay leaves the other two proportions unknown and prevents locating a texture on the triangle.

The soil texture triangle is defined by three components that sum to 100%: clay, silt, and sand. These three fractions are the parameters that determine a soil’s texture, and each point inside the triangle represents a particular combination of all three. You can’t describe a texture accurately with just one value, like clay alone, because the amounts of silt and sand also shape the texture. So the full set of parameters is clay, silt, and sand; knowing only clay leaves the other two proportions unknown and prevents locating a texture on the triangle.