Soil Texture Triangle Review

What is the primary factor that determines soil texture?

• organic matter content

• soil color

• mineral particle size

• soil pH

Answer explanation

The primary factor that determines soil texture is the mineral particle size. Different proportions of sand, silt, and clay give rise to various soil textures.

Which type of soil texture has the highest water-holding capacity?

• sandy soil

• loamy soil

• clayey soil

• silty soil

Answer explanation

Clayey soil has the highest water-holding capacity due to its small particle size and ability to hold onto water molecules.

What is the texture of a soil that contains equal amounts of sand, silt, and clay?

• sandy loam

• loamy sand

• silty clay

• clay loam

Answer explanation

A soil that contains equal amounts of sand, silt, and clay is classified as sandy loam. This type of soil has a balanced combination of drainage and water-holding capacity.

Which soil texture has the best drainage capability?

• sandy soil

• silty soil

• clayey soil

• loamy soil

Answer explanation

Sandy soil has the best drainage capability because of its larger particle size, which allows water to flow through more freely.

What is the ideal soil texture for agricultural purposes?

• sandy soil

• silty soil

• clayey soil

• loamy soil

Answer explanation

Loamy soil is considered ideal for agricultural purposes as it offers a balance between water drainage and retention, nutrient availability, and root penetration.