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                  You are here: Home > Soil & Fertilization > Physical properties > Texture

                  Texture

                  Texture is the grain-size composition of the soil. Does a soil consist mostly of clay (lutum), loam or silt, or of sand? The texture of a soil is difficult to influence with measures, but it does have a significant impact on the properties of that soil.

                  Clay particles that are smaller than 0.0002 mm cannot be seen with the naked eye. However, these particles do retain plenty of water and nutrients. Particles between 0.002 and 0.05 m are called silt or loam. They are also too small to see with the naked eye. Soils with lots of silt and loam have small pores that retain plenty of water and the particles themselves also retain nutrients. However, soils with lots of silt and loam are prone to compacting and collapse. Particles between 0.5 and 2 mm are known as sand, and we are perfectly capable of seeing grains of sand with a naked eye. Sand retains relatively little moisture, because the surface area is small in relation to its volume. There are pores between the main grains that are useful for water drainage. Sand makes a soil sturdier, but it does not contain any nutrients for a plant. If particles exceed > 2 mm we talk about gravel and stones.

                  Soils can be divided into certain texture classes by using a texture triangle. The clay percentage is of the greatest importance - if a soil contains less than 8% clay particles, we refer to a sandy soil. If the clay percentage is between 8 and 25%, it is a loamy soil. If the clay percentage exceeds 25% we have a clay soil. Water and air move slowly through a clay soil. It means crops are less likely to suffer from drought stress, but the land is likely to puddle up quicker. Swelling and shrinking clay can cause cracks in the soil.

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