What does soil texture refer to?

Soil texture specifically refers to the relative proportions of sand, silt, and clay present in the soil. This classification is crucial because the texture significantly influences various soil properties, including its ability to retain water, aeration, drainage characteristics, and nutrient-holding capacity. Understanding soil texture helps in evaluating its suitability for different applications, particularly in relation to on-site sewage facilities, where effective drainage and absorption are essential for proper operation.

In contrast, while the color of the soil can provide insights into its composition and conditions, it does not directly indicate the texture. Similarly, the soil's pH level relates to its acidity or alkalinity, which affects nutrient availability but does not define how coarse or fine the soil is. Lastly, moisture content pertains to how much water the soil holds at a given time rather than its physical structure. Therefore, defining soil texture by the proportions of sand, silt, and clay gives a comprehensive understanding of its physical characteristics and impacts on various environmental factors.