Clay Soil. Histosols, used for fuel and horticultural products, are full of organic materials and typically referred to as peat and muck. The particles in this soil are tightly packed … To be classified as silt, a particle must be less than .005 centimeters (.002 inches) across. Silt is granular material of a size between sand and clay, whose mineral origin is quartz and feldspar.Silt may occur as a soil (often mixed with sand or clay) or as sediment mixed in suspension with water (also known as a suspended load) and soil in a body of water such as a river. The use of silt should be understood properly because it can be very useful in agriculture and also can enhance the productivity of the land. Garden soils are intended to be tilled in with existing soil in garden beds. Silty soils are those that have particles in them that are even finer (smaller) than clay particals. It may also exist as soil deposited at the bottom of a water body, like mudflows from landslides. The Soil Triangle is a commonly used visual representation of the possible soil type combinations based on soil particle size. The twelve soil orders begin with Gelisols soils that populate the frozen regions of the world and contain permafrost with 2 mm of the surface. Larger particles will have less surface area per volume of soil. For example, GW-GM corresponds to "well-graded gravel with silt.". Silt can be deposited by water via floods or the natural flow of rivers. For container plants, it is much better to use soilless potting mixes.. In their frozen state, this soil type is sensitive to human activities and has no practical applications. Silt is made up of rock and mineral particles that are larger than clay but smaller than sand.Individual silt particles are so small that they are difficult to see. Silt is also used to prevent eroded soil from getting into homes and river streams as too much of silt can be harmful to the environment which is one of the purposes of silt fence. The silt soil is more fertile compared to the other three types of soil. Because of its makeup, soil has a variety of uses in a variety of industries. Silt is used to build bricks, grow crops, make sedimentary rocks and concrete.Silt is also very thin and can be mistaken by sand. In addition to the effect on plant development, topsoil or garden soil in containers can make the container too heavy to easily be lifted and moved. When to Use Garden Soil. Clay is the smallest particle amongst the other two types of soil. Loam soil contains the perfect combination of sand, silt and clay particles to support the growth of virtually all forms of plant life. The other alternative is to amend soil by … Therefore, it is also used in agricultural practices to improve soil fertility. Soil covers the surface of the Earth and is a valuable ecosystem. Purchasing topsoil is the quickest way to great garden soil. The USDA classifies soil types according to a soil texture triangle chart which gives names to various combinations of clay, sand, and silt. For best results, put down a layer of 2-3 inches of topsoil on your planting beds and till it deeply into the existing soil. Clay soil has several uses for around the home, the art studio and even the science lab. Silt is a solid, dust-like sediment that water, ice, and wind transport and deposit. Soil is made up of minerals, nutrients, water, air, organic matter and microorganisms. You can put it directly on top of existing soil. The soil content is well suited for several species of trees and shrubs that thrive on the nutrient-rich top layers of the clay, while moist, compacted portions of the soil have played a key role in ceramics and pottery for thousands of years. If the soil has 5–12% by weight of fines passing a #200 sieve (5% < P #200 < 12%), both grain size distribution and plasticity have a significant effect on the engineering properties of the soil, and dual notation may be used for the group symbol.