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- Planosol abstract "A planosol in the FAO World Reference Base for Soil Resources is a soil with a light-coloured, coarse-textured, surface horizon that shows signs of periodic water stagnation and abruptly overlies a dense, slowly permeable subsoil with significantly more clay than the surface horizon. In the US Soil Classification of 1938 used the name Planosols, whereas its successor, the USDA soil taxonomy, includes most Planosols in the Great Groups Albaqualfs, Albaquults and Argialbolls.These soils are typically in seasonally waterlogged flat lands. They occur mainly in subtropical and temperate, semi-arid and subhumid regions. Planosols are formed mostly in clayey alluvial and colluvial deposits. Geological stratification and/or a pedogenetic process of destruction and removal of clay has resulted in the relatively coarse-textured, light-coloured surface soil abruptly overlying finer textured subsoil; impeded downward percolation of water causes temporarily reducing conditions with a stagnic colour pattern, at least close to the abrupt textural change.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. Vast areas of Planosols are used for extensive grazing. 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. Root development on natural unmodified Planosols is hindered severely by oxygen deficiency in wet periods, dense subsoil and, in places, by toxic levels of Al in the rootzone. Planosols in Southeast Asia are widely planted with paddy rice. Other crops met with little success. Fertilizers are needed for good yields. In climates with long dry periods and short infrequent wet spells the best land use are grasslands. Strongly developed Planosols with a very silty or sandy surface soil are best left untouched.Planosols cover an estimated 130 million hectares of the world. Major areas with planosols occur in subtropical and temperate regions with clear alternation of wet and dry seasons, as in South America (Uruguay, northeastern Argentina, Paraguay, eastern Bolivia, the Brazilian pampa, the Pantanal mato-grossense and northeastern Brazil), Africa (Sahelian zone, East and Southern Africa), the east of the United States of America, Southeast Asia (Bangladesh and Thailand), and Australia.".
- Planosol thumbnail Planosol.gif?width=300.
- Planosol wikiPageExternalLink CN9682160.xml;CN9682160.
- Planosol wikiPageExternalLink CJFDTOTAL-HLJN200803023.htm.
- Planosol wikiPageExternalLink CJFDTOTAL-ZNYK404.005.htm.
- Planosol wikiPageExternalLink 000020030703A0151918.php.
- Planosol wikiPageExternalLink BR2004000645.xml;BR2004000645.
- Planosol wikiPageExternalLink en.
- Planosol wikiPageExternalLink doaj?func=abstract&id=35578.
- Planosol wikiPageExternalLink a19v60n4.pdf.
- Planosol wikiPageExternalLink scielo.php?pid=S0103-90162003000400019&script=sci_arttext.
- Planosol wikiPageExternalLink science?_ob=ArticleURL&_udi=B6TC6-4V1MFBG-1&_user=7305403&_coverDate=04%2F30%2F2009&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=1437588438&_rerunOrigin=google&_acct=C000067281&_version=1&_urlVersion=0&_userid=7305403&md5=18b6c26bad47a8f46d345ab69c541fb3.
- Planosol wikiPageID "21190774".
- Planosol wikiPageLength "6397".
- Planosol wikiPageOutDegree "54".
- Planosol wikiPageRevisionID "677943193".
- Planosol wikiPageWikiLink Africa.
- Planosol wikiPageWikiLink Agriculture.
- Planosol wikiPageWikiLink Alluvium.
- Planosol wikiPageWikiLink Aluminium.
- Planosol wikiPageWikiLink Argentina.
- Planosol wikiPageWikiLink Australia.
- Planosol wikiPageWikiLink Bangladesh.
- Planosol wikiPageWikiLink Bolivia.
- Planosol wikiPageWikiLink Category:Pedology.
- Planosol wikiPageWikiLink Category:Types_of_soil.
- Planosol wikiPageWikiLink Colluvium.
- Planosol wikiPageWikiLink Crop.
- Planosol wikiPageWikiLink East_Africa.
- Planosol wikiPageWikiLink FAO.
- Planosol wikiPageWikiLink Fertilizer.
- Planosol wikiPageWikiLink Food_and_Agriculture_Organization_of_the_United_Nations.
- Planosol wikiPageWikiLink Grassland.
- Planosol wikiPageWikiLink Holdridge_life_zones.
- Planosol wikiPageWikiLink Northeast_Region,_Brazil.
- Planosol wikiPageWikiLink Paddy_field.
- Planosol wikiPageWikiLink Pampa.
- Planosol wikiPageWikiLink Pampas.
- Planosol wikiPageWikiLink Pantanal.
- Planosol wikiPageWikiLink Paraguay.
- Planosol wikiPageWikiLink Pedogenesis.
- Planosol wikiPageWikiLink Pedology_(soil_study).
- Planosol wikiPageWikiLink Permeability_(earth_sciences).
- Planosol wikiPageWikiLink Rice.
- Planosol wikiPageWikiLink Root.
- Planosol wikiPageWikiLink Sahel.
- Planosol wikiPageWikiLink Sand.
- Planosol wikiPageWikiLink Semi-arid_climate.
- Planosol wikiPageWikiLink Shrub.
- Planosol wikiPageWikiLink Silt.
- Planosol wikiPageWikiLink Soil.
- Planosol wikiPageWikiLink Soil_classification.
- Planosol wikiPageWikiLink Soil_horizon.
- Planosol wikiPageWikiLink Soil_texture.
- Planosol wikiPageWikiLink South_America.
- Planosol wikiPageWikiLink Southeast_Asia.
- Planosol wikiPageWikiLink Southern_Africa.
- Planosol wikiPageWikiLink Subtropics.
- Planosol wikiPageWikiLink Sugar_beet.
- Planosol wikiPageWikiLink Temperate_climate.
- Planosol wikiPageWikiLink Thailand.
- Planosol wikiPageWikiLink Toxic.
- Planosol wikiPageWikiLink Toxicity.
- Planosol wikiPageWikiLink Tree.
- Planosol wikiPageWikiLink USDA_soil_taxonomy.
- Planosol wikiPageWikiLink United_States.
- Planosol wikiPageWikiLink United_States_of_America.
- Planosol wikiPageWikiLink Uruguay.
- Planosol wikiPageWikiLink Water.
- Planosol wikiPageWikiLink Wheat.
- Planosol wikiPageWikiLink World_Reference_Base_for_Soil_Resources.
- Planosol wikiPageWikiLink File:Planosol.gif.
- Planosol wikiPageWikiLink File:Stagni-eutric_Planosol.JPG.
- Planosol wikiPageWikiLinkText "Planosol".
- Planosol wikiPageWikiLinkText "planosol".
- Planosol hasPhotoCollection Planosol.
- Planosol wikiPageUsesTemplate Template:Cite_news.
- Planosol wikiPageUsesTemplate Template:Reflist.
- Planosol wikiPageUsesTemplate Template:Soil_type.
- Planosol subject Category:Pedology.
- Planosol subject Category:Types_of_soil.
- Planosol hypernym Soil.
- Planosol type Species.
- Planosol comment "A planosol in the FAO World Reference Base for Soil Resources is a soil with a light-coloured, coarse-textured, surface horizon that shows signs of periodic water stagnation and abruptly overlies a dense, slowly permeable subsoil with significantly more clay than the surface horizon.".
- Planosol label "Planosol".
- Planosol sameAs Planosol.
- Planosol sameAs Planosol.
- Planosol sameAs m.05c2902.
- Planosol sameAs Q2098287.
- Planosol sameAs Q2098287.
- Planosol wasDerivedFrom Planosol?oldid=677943193.
- Planosol depiction Planosol.gif.
- Planosol isPrimaryTopicOf Planosol.