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The retention curve

The retention curve illustrates the relationship between water content and soil water tension. This relationship is characteristic of each soil type and is influenced by various factors. One of the most important factors is the pore size distribution. This is closely related to the soil type, which is why it is common to specify typical retention curves for different soil types. The figure shows retention curves for sand, silt [...]

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Difference between water content and soil water tension

When we talk about soil moisture, we are referring to the water content. This indicates how much water is in the soil. The water content can be specified in two different ways. The volumetric water content is the ratio of the volume of water to the total volume of the soil sample. The gravimetric water content is the ratio of the mass of water to the mass of the dry […]

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