Soil Water Characteristic Curve

The Soil Water Characteristic Curve shows how tightly soil holds water at different levels of dryness or wetness. It describes the relationship between the moisture content in the soil and the water pressure required to extract or add water. When the soil is wet, water moves easily, but as it dries, water becomes more difficult to remove. This curve helps engineers and farmers understand how much water soil can hold and how plants might access that water, which is crucial for agriculture, construction, and managing water resources effectively.