What is Planosol?
Definition of planosol : an intrazonal group of soils with strongly leached upper layer over a compacted clay or silt that is developed on smooth flat uplands in cool to warm humid to subhumid regions.
What is Luvisol soil?
Luvisolic soils are forest soils that form in parent materials derived from sedimentary rocks. Luvisols have a coarser-textured surface mineral horizon (the Ae) overlying a finer-textured mineral horizon that is higher in clay than the overlying horizon. The higher clay B horizon is assigned a t suffix (Bt).
What is Xerosols soil?
XEROSOLS (X) Other soils having a weak ochric A horizon and an aridic moisture regime; lacking permafrost within 200 cm of the surface.
How is soil classified?
Soil textures are classified by the fractions of sand, silt, and clay in a soil. Classifications are typically named for the primary constituent particle size or a combination of the most abundant particles sizes (e.g. sandy clay, silty clay).
Where can I find Planosol?
The world’s major Planosol areas occur in subtropical and temperate regions with clear alternation of wet and dry seasons, e.g. in Latin America (southern Brazil, Paraguay, Argentina), southern and eastern Africa (Sahelian zone, East and southern Africa), the eastern United States, southeast Asia (Bangla- desh.
What is Lithosols soil?
Definition of lithosol : any of a group of shallow azonal soils consisting of imperfectly weathered rock fragments.
What is Nitosols soil in Ethiopia?
Nitisols are deep, stable soils with favourable physical properties. There are approximately 200 million hectares of Nitisols worldwide. More than half of all Nitisols are found in tropical Africa, notably in the highlands (>1000 m.) of Ethiopia, Kenya, Zaire and Cameroon.
What is Acrisols soil?
Acrisols [Lat.: acris = very acid] are acid soils with a sandy-loamy surface soil and accumulation of LAC in an argic B horizon. They have a low base saturation.
What is meadow soil?
Meadow soils (Typic Humicryepts) are warmer, have Bw horizons, and contain more Ca, organic carbon, and clay in the A horizon. Forest soils (Inceptic Haplocryalfs) have Bt horizons, higher B/A horizon clay ratios, are more acidic, and contain more exchangeable Mg and total exchangeable cations than meadow soils.
Where are Lithosols found?
occurrence in South America. … slopes are often steep, and lithosols (shallow soils consisting of imperfectly weathered rock fragments) abound, accounting for another 10 percent of the continent’s surface.
How is vertisol soil formed?
Vertisols (from Latin verto, “turn”) are clay-rich soils that shrink and swell with changes in moisture content. During dry periods, the soil volume shrinks and deep wide cracks form. The soil volume then expands as it wets up.
What type of soil is Planosol?
Planosol, one of the 30 soil groups in the classification system of the Food and Agriculture Organization (FAO). Planosols are characterized by a subsurface layer of clay accumulation. They occur typically in wet low-lying areas that can support either grass or open forest vegetation.
What are planosols and Alfisols?
Planosols are related to the Alfisols and Ultisols of the U.S. Soil Taxonomy. Related FAO soil groups also exhibiting clay migration are Luvisols and Albeluvisols.
What type of vegetation is found in planosols?
Planosols in their natural state support a sparse grass vegetation, often with scattered shrubs and trees that have shallow root systems that can cope with temporary waterlogging. Agricultural land use on is normally less intensive than that on most other soils under the same climate conditions.
Can you grow wood in planosols?
Wood production on Planosols is much lower than on other soils under the same conditions. In the temperate zone these soils are mainly in grass or planted to crops such as wheat and sugar beet. Yields are modest even on drained and deeply loosened soils.