At one extreme is the heavy clay soil, which is sticky when wet and like concrete when dry. These are known as problems of soil texture . Fortunately, soils with texture-related problems can be improved. Soil Texture Classifications Soil texture is determined by the relative proportion of sand, silt and clay found in a given soil.
Sand is gritty to the touch and the individual grains or particles can be seen with the naked eye.
It is the largest of the three size classes of soil particles. A soil in which sand predominates is classified, logically enough, as a sand-textured soil or simply a sandy soil. Sandy soils are coarse in texture. Silt is smooth and slippery to the touch when wet, and the individual particles are much smaller than those of sand. These individual particles can only be seen with the aid of a microscope.