What is the soil structure?
The soil structure is the shape that the soil holds on the basis of its physical and chemical properties. Each individual unit of soil in the overall structure is called Ped . The soil structure is the easiest to be determined by taking a soil sample that has not been disturbed and carefully looked at its shape. The shape of the soil falls into one of the following categories: granular, crumb, blocked, salaries, prismatic, columnar, disposable or massive. This soil is located where the roots penetrated the soil. It should not be confused with the soil Crumb , which is very porous. Each individual Crumb soil does not fit together with each surrounding Ped, because the shape of each individual pedal is roughly spherical. The form of each individual is caused by Peds that surround it. Each block of Ped can be divided into a smaller PEDS block.
salaries soil Peds are thin, flat and similar boards. Are oriented in a horizontal direction. This structure is commonly found in compacted soil.
Prismatic are vertical columns that can be more centimeters long and are located in the lower horizons. column are also vertical oriented columns, but are finished with salt with a cap. The column ground is located in the arid areas of the world.
One -time soils are divided into individual grains of soil that does not stick and generally remain freely packed. This structure is found in sandy soils. On the other hand, it appears in solid mass and on the other hand, the massive soil structure appears and does not tend to break easily under light pressure. This structure is associated with very finely textured soils such as clay.
The structure of the soil Johno to many factors, including climate, physicochemical processes and biological processes. The weather cycles have a significant effect on the soil structure. Freezing and defrostingWalking, wet and dry, clay translocation and other various pedogenic-forming soil-they affect the entire soil structure to different degrees throughout the structure. The effects are the largest in the upper layer where the exposure is straight.
phase changes of water - solid, liquid and gas - have a dramatic effect on the soil structure. These phases are affected by soil temperature. Running water causes the soil from one place to erode and be placed in another place. The frost and shrinking process that water changes determines the change in the volume of soil.
biological processes include the influences of organisms of different sizes in the soil. The amount of organic matter in the soil is a factor in how the soil agregacetes and divided into PedS. Animals that live in the soil help pack the soil together. The secretions of these animals also affect the soil structure.
Another perspective in the discussion of the soil structure is the ability of soil to support the life of plants. The soils consist of four different ingredients: minerals, organic matter, air and water. Soils that contain 90 pRocent minerals and about 10 percent of organic matter, also called humus, are able to well support plant growth. Soils that contain small amounts of organic materials have difficult to maintain the life of plants.