Vertisols Soils: Dark Clays

Vertisol has six subdirectories, Cryerts, Aquerts, Xererts, Torrerts, Usterts, Uderts (Figure 01). They are based on tidal conditions, the temperature of the cold soil, and the length of time that the crack propagates to the surface. Using forming elements for soil moisture conditions of a given name does not necessarily mean that the soil has those soil moisture conditions. Viscosity, slow penetration of montmorillonite soil layer brings Vertisols aquatic condition to nearly all annual rainfall patterns.

Soil with high clay content swells when wet, and bursts when dry. Vertisols is in a temperate tropical climate with a clear dry season and rainy season. Normally, Vertisol has only a very deep self-mixing A horizon. When the topsoil dries it will crack and it will mix the soil and the depth of cracks. Many major fixes and approximations are made to change the system. This system can be used to classify the soil anywhere in the world, especially by adding new soil sequences, isisols. New soil classifications are still being tested and fine modifications may be made.

The soil found in a humid climate has developed from a weak horizon to a moderate horizon. Horizon development may be delayed due to cold weather or watery

The clayey clay known as Vertisol has moderately weathered, has a high cation exchange capacity, and contains montmorillonite as the main mineral (FAO, 2001). Vertisol is generally more fertile than other types of soils, but since they are heavy clays containing a high proportion of expanded clay, they may need to be carefully managed (Parker and Rae, 1998). They are naturally rich in organic matter and are therefore very suitable for agricultural applications (Brady and Weil, 2002).

Most soil is between these extremes. For example, Vertisols have moderate or low structural stability and the clay surface is predominantly silica, but typically it has a small amount of amorphous coating. In the planosol, when formed by thermal decomposition, the clay portion of the upper residue is partially decomposed by the amorphous silica residue, but the remaining montmorillonite or illite is laminated with the aluminum hydroxide polymer. Expansion - contraction potential and cation exchange capacity of the clay part At the same time, part of the free iron oxide was reduced and leached out. The net effect of these changes is usually a decline in structural stability.