Soil

Land provides the basic infrastructure of the plant. The nutrients and the degree of aeration provide the soil's ability to support different types of plants. Evolution of organic matter and erosion create the unique chemical make-ups of soil throughout the world, which is another reason why different plant species perform better in different regions of the world.

Soil is a natural element formed through millennia of erosion will continue to be produced by natural cycles of the earth. Rivers will deposit the organic waste. The wind will erode mountains. And sand blowing from the desert to the city, cultivating an endless cycle of creation of dirt, while plants absorb its nutrients to add a tiny fraction of the massive cycle of life.

Meaning

Soil is one of the main factors of vegetation beside the water, sunlight and clean air. Nutrients in the soil, the crops will provide a better harvest. And aeration or drainage affects the amount of water applied to land plants. Different plants require different amounts of nutrients and various nutrients back to the ground. Therefore, many farmers employing crop rotation, which can help prevent the development of pathogens and pests. It also replenishes the soil of nutrients and can preserve the structure of the soil by planting deep roots a seasonal and short roots the next.

Type

Soil type is defined by the mineral content and size. The presence and proportion of sand, silt and clay determine soil type, characterized as heavy, light, sand, clay, loam, clay and silt loam-clay. The amount of sand, the larger particles, determine the degree of aeration. Smaller particles, dust and clay affects the earth's ability to bind with nutrients and water for plant life. The amount of organic material or humus affect soil nutrients and fertility to the plants. There are many other specific and technical soil classifications recognized by various scientific organizations nationally and internationally.

Feature

Topsoil is the uppermost layer, or first 2 to 8 inches of surface soil that contains the most organic materials and microorganisms. Plants that are rooted in the topsoil to collect nutrients as nitrogen, potassium and phosphorus. Topsoil can be fertilized and strengthened to support plant growth. Many commercial forms of land to sell in the market to promote healthy lawns and green gardens and flowerbeds. Topsoil collects its nutrients from decaying organic matter such as bark chips, grass clippings and other organic wastes.

Evolution

Soil is formed by development and erosion of other issues, such as stone, organic material, volcanic ash deposits and sediment from water. These parent materials define the structure and nutrient content in soil. Parent materials deposited by erosion, wind, water and volcanoes.

Misconceptions

Some of the common misconceptions: Soil has always been present on Earth; earth consists of plants and animals, a layer of water running underground, the soil can be used up and never replaced, and the soil is very deep.

Facts about Soil and Clay

A thin layer of soil covering the top layer of crust. Soil is essential for agriculture and also supports buildings and roads.

Soil composition

The soil consists primarily of the minerals come from rocks. For example, sandstone soils, shale soils and limestone soils each have different properties. Soil is also composed of organic material, such as digestion plants and animals, and air and water.

Identifying Soils

Different soil types are characterized by their water content. Wet soils are weaker and can not support heavy structures.

Soil Textures

Soil textures are classified as sand, silt or clay. Sand has a gritty texture, silt has a meal or silky texture, and clay have a smooth or sticky consistency. Soil texture is related to stability and strength.

Clay Identification

Clay is defined as soil that has a grain size of less than 0.005 mm. Clay is plastic, or pliable when wet and hardens when dried or fired.

Clay Tools

Clay has been used for thousands of years as construction materials and ceramics. Clay is also used techniques such as clay to add channels to help reduce moisture loss.