Alfisols - Revision history

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2025-05-09T13:32:11Z

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← Older revision		Revision as of 09:32, 9 May 2025
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	[[File:Enchytraeids.JPG\|200px\|thumb\|left\|Enchytraeids in soil [https://www.wur.nl/en/Research-Results/Chair-groups/Environmental-Sciences/Soil-Biology-Group/Research/The-Soil-Biota/Enchytraeids-potworms.htm]]]		[[File:Enchytraeids.JPG\|200px\|thumb\|left\|Enchytraeids in soil [https://www.wur.nl/en/Research-Results/Chair-groups/Environmental-Sciences/Soil-Biology-Group/Research/The-Soil-Biota/Enchytraeids-potworms.htm]]]
	The geographic and climatic [[diversity]] of alfisols means that a greater variety of flora and fauna exists compared to other soil orders. Astigmatic [[mites]] are often found at their greatest densities in agroecosystems after events that increase soil [[Organic Matter\|organic matter]], such as harvest, tillage, and the application of soil amendments [8]. Enchytraeids are often found at higher densities in alfisols compared to other soils – they are typically associated with high acidity and [[Organic Matter\|organic matter]] found in temperate forests, grasslands, and agricultural areas [4,11]. In forested and cultivated alfisols, enchytraeid populations typically occur in the upper soil horizons where organic matter is highest, but may be found at greater depths in grasslands soils (usually mollisols) [4,5].Other prominent soil fauna in agroecosystems include Carabidae (ground beetles) and various species of mound-building and humivorous [[termites]] [9].		The geographic and climatic [[diversity]] of alfisols means that a greater variety of flora and fauna exists compared to other soil orders. Astigmatic [[mites]] are often found at their greatest densities in agroecosystems after events that increase soil [[Organic Matter\|organic matter]], such as harvest, tillage, and the application of soil amendments [8]. Enchytraeids are often found at higher densities in alfisols compared to other soils – they are typically associated with high acidity and [[Organic Matter\|organic matter]] found in temperate forests, grasslands, and agricultural areas [4,11]. In forested and cultivated alfisols, enchytraeid populations typically occur in the upper soil horizons where [[Organic Matter\|organic matter]] is highest, but may be found at greater depths in grasslands soils (usually mollisols) [4,5].Other prominent soil fauna in agroecosystems include Carabidae (ground beetles) and various species of mound-building and humivorous [[termites]] [9].

Njhenshu: The LinkTitles extension automatically added links to existing pages (https://github.com/bovender/LinkTitles).

2025-05-02T19:16:09Z

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← Older revision		Revision as of 15:16, 2 May 2025
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	[[File:Enchytraeids.JPG\|200px\|thumb\|left\|Enchytraeids in soil [https://www.wur.nl/en/Research-Results/Chair-groups/Environmental-Sciences/Soil-Biology-Group/Research/The-Soil-Biota/Enchytraeids-potworms.htm]]]		[[File:Enchytraeids.JPG\|200px\|thumb\|left\|Enchytraeids in soil [https://www.wur.nl/en/Research-Results/Chair-groups/Environmental-Sciences/Soil-Biology-Group/Research/The-Soil-Biota/Enchytraeids-potworms.htm]]]
	The geographic and climatic [[diversity]] of alfisols means that a greater variety of flora and fauna exists compared to other soil orders. Astigmatic [[mites]] are often found at their greatest densities in agroecosystems after events that increase soil [[Organic Matter\|organic matter]], such as harvest, tillage, and the application of soil amendments [8]. Enchytraeids are often found at higher densities in alfisols compared to other soils – they are typically associated with high acidity and organic matter found in temperate forests, grasslands, and agricultural areas [4,11]. In forested and cultivated alfisols, enchytraeid populations typically occur in the upper soil horizons where organic matter is highest, but may be found at greater depths in grasslands soils (usually mollisols) [4,5].Other prominent soil fauna in agroecosystems include Carabidae (ground beetles) and various species of mound-building and humivorous [[termites]] [9].		The geographic and climatic [[diversity]] of alfisols means that a greater variety of flora and fauna exists compared to other soil orders. Astigmatic [[mites]] are often found at their greatest densities in agroecosystems after events that increase soil [[Organic Matter\|organic matter]], such as harvest, tillage, and the application of soil amendments [8]. Enchytraeids are often found at higher densities in alfisols compared to other soils – they are typically associated with high acidity and [[Organic Matter\|organic matter]] found in temperate forests, grasslands, and agricultural areas [4,11]. In forested and cultivated alfisols, enchytraeid populations typically occur in the upper soil horizons where organic matter is highest, but may be found at greater depths in grasslands soils (usually mollisols) [4,5].Other prominent soil fauna in agroecosystems include Carabidae (ground beetles) and various species of mound-building and humivorous [[termites]] [9].

Njhenshu: The LinkTitles extension automatically added links to existing pages (https://github.com/bovender/LinkTitles).

2025-05-01T18:44:12Z

The LinkTitles extension automatically added links to existing pages (https://github.com/bovender/LinkTitles).

← Older revision		Revision as of 14:44, 1 May 2025
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	[[File:Enchytraeids.JPG\|200px\|thumb\|left\|Enchytraeids in soil [https://www.wur.nl/en/Research-Results/Chair-groups/Environmental-Sciences/Soil-Biology-Group/Research/The-Soil-Biota/Enchytraeids-potworms.htm]]]		[[File:Enchytraeids.JPG\|200px\|thumb\|left\|Enchytraeids in soil [https://www.wur.nl/en/Research-Results/Chair-groups/Environmental-Sciences/Soil-Biology-Group/Research/The-Soil-Biota/Enchytraeids-potworms.htm]]]
	The geographic and climatic [[diversity]] of alfisols means that a greater variety of flora and fauna exists compared to other soil orders. Astigmatic [[mites]] are often found at their greatest densities in agroecosystems after events that increase soil organic matter, such as harvest, tillage, and the application of soil amendments [8]. Enchytraeids are often found at higher densities in alfisols compared to other soils – they are typically associated with high acidity and organic matter found in temperate forests, grasslands, and agricultural areas [4,11]. In forested and cultivated alfisols, enchytraeid populations typically occur in the upper soil horizons where organic matter is highest, but may be found at greater depths in grasslands soils (usually mollisols) [4,5].Other prominent soil fauna in agroecosystems include Carabidae (ground beetles) and various species of mound-building and humivorous [[termites]] [9].		The geographic and climatic [[diversity]] of alfisols means that a greater variety of flora and fauna exists compared to other soil orders. Astigmatic [[mites]] are often found at their greatest densities in agroecosystems after events that increase soil [[Organic Matter\|organic matter]], such as harvest, tillage, and the application of soil amendments [8]. Enchytraeids are often found at higher densities in alfisols compared to other soils – they are typically associated with high acidity and organic matter found in temperate forests, grasslands, and agricultural areas [4,11]. In forested and cultivated alfisols, enchytraeid populations typically occur in the upper soil horizons where organic matter is highest, but may be found at greater depths in grasslands soils (usually mollisols) [4,5].Other prominent soil fauna in agroecosystems include Carabidae (ground beetles) and various species of mound-building and humivorous [[termites]] [9].

Njhenshu: The LinkTitles extension automatically added links to existing pages (https://github.com/bovender/LinkTitles).

2024-06-17T17:30:06Z

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← Older revision		Revision as of 13:30, 17 June 2024
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	== Ecology ==		== Ecology ==

	Around the world, alfisols are used intensively for agriculture. In the United States, particularly the Midwest and Great Lakes regions, major crops include grains, corn, and hay [3]. Dairy farming is also common in these areas. Alfisols in Mediterranean climates (i.e. Europe and California) are cultivated for fruits, nuts, and various specialty crops such as olives [3]. An important process that occurs in alfisol agroecosystems is crop straw [[decomposition]], which increases soil [[Organic Matter\|organic matter]] and nutrient availability [6]. Alfisols that are low in organic matter are susceptible to soil erosion, particularly in agricultural areas [1]. A variety of best management practices for agriculture are utilized in these areas, such as crop rotations, cover cropping, and fallowing [1].		Around the world, alfisols are used intensively for agriculture. In the United States, particularly the Midwest and Great Lakes regions, major crops include grains, corn, and hay [3]. Dairy farming is also common in these areas. Alfisols in Mediterranean climates (i.e. Europe and California) are cultivated for fruits, nuts, and various specialty crops such as olives [3]. An important process that occurs in alfisol agroecosystems is crop straw [[decomposition]], which increases soil [[Organic Matter\|organic matter]] and nutrient availability [6]. Alfisols that are low in [[Organic Matter\|organic matter]] are susceptible to soil erosion, particularly in agricultural areas [1]. A variety of best management practices for agriculture are utilized in these areas, such as crop rotations, cover cropping, and fallowing [1].

	[[File:Enchytraeids.JPG\|200px\|thumb\|left\|Enchytraeids in soil [https://www.wur.nl/en/Research-Results/Chair-groups/Environmental-Sciences/Soil-Biology-Group/Research/The-Soil-Biota/Enchytraeids-potworms.htm]]]		[[File:Enchytraeids.JPG\|200px\|thumb\|left\|Enchytraeids in soil [https://www.wur.nl/en/Research-Results/Chair-groups/Environmental-Sciences/Soil-Biology-Group/Research/The-Soil-Biota/Enchytraeids-potworms.htm]]]

Njhenshu: The LinkTitles extension automatically added links to existing pages (https://github.com/bovender/LinkTitles).

2023-06-05T19:09:35Z

← Older revision		Revision as of 15:09, 5 June 2023
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	== Ecology ==		== Ecology ==

	Around the world, alfisols are used intensively for agriculture. In the United States, particularly the Midwest and Great Lakes regions, major crops include grains, corn, and hay [3]. Dairy farming is also common in these areas. Alfisols in Mediterranean climates (i.e. Europe and California) are cultivated for fruits, nuts, and various specialty crops such as olives [3]. An important process that occurs in alfisol agroecosystems is crop straw [[decomposition]], which increases soil organic matter and nutrient availability [6]. Alfisols that are low in organic matter are susceptible to soil erosion, particularly in agricultural areas [1]. A variety of best management practices for agriculture are utilized in these areas, such as crop rotations, cover cropping, and fallowing [1].		Around the world, alfisols are used intensively for agriculture. In the United States, particularly the Midwest and Great Lakes regions, major crops include grains, corn, and hay [3]. Dairy farming is also common in these areas. Alfisols in Mediterranean climates (i.e. Europe and California) are cultivated for fruits, nuts, and various specialty crops such as olives [3]. An important process that occurs in alfisol agroecosystems is crop straw [[decomposition]], which increases soil [[Organic Matter\|organic matter]] and nutrient availability [6]. Alfisols that are low in organic matter are susceptible to soil erosion, particularly in agricultural areas [1]. A variety of best management practices for agriculture are utilized in these areas, such as crop rotations, cover cropping, and fallowing [1].

	[[File:Enchytraeids.JPG\|200px\|thumb\|left\|Enchytraeids in soil [https://www.wur.nl/en/Research-Results/Chair-groups/Environmental-Sciences/Soil-Biology-Group/Research/The-Soil-Biota/Enchytraeids-potworms.htm]]]		[[File:Enchytraeids.JPG\|200px\|thumb\|left\|Enchytraeids in soil [https://www.wur.nl/en/Research-Results/Chair-groups/Environmental-Sciences/Soil-Biology-Group/Research/The-Soil-Biota/Enchytraeids-potworms.htm]]]

Njhenshu: The LinkTitles extension automatically added links to existing pages (https://github.com/bovender/LinkTitles).

2023-05-10T18:03:16Z

← Older revision		Revision as of 14:03, 10 May 2023
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	Alfisols are mildly acidic soils with significant accumulation of clays, possessing a soil moisture regime that is moist for most of the year [6]. These are latitudinally the most widespread of the twelve [[soil]] orders defined by the United States Department of Agriculture (USDA) [3]. Alfisols are typically well-drained and commonly used for agriculture.		Alfisols are mildly acidic soils with significant accumulation of clays, possessing a soil moisture regime that is moist for most of the year [6]. These are latitudinally the most widespread of the twelve [[soil]] orders defined by the United States Department of [[Agriculture]] (USDA) [3]. Alfisols are typically well-drained and commonly used for agriculture.

	== Definition ==		== Definition ==
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	[10]USDA Natural Resources Conservation Service. Alfisols Map. https://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/class/maps/?cid=nrcs142p2_053591		[10]USDA Natural Resources Conservation Service. Alfisols Map. https://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/class/maps/?cid=nrcs142p2_053591

	[11]van Vliet, P.C.J., West, L.T., Hendrix, P.F., and Coleman, D.C. The influence of [[Enchytraeidae]] (Oligochaeta) on the soil porosity of small microcosms. 1993. Geoderma. 56:287-299.		[11]van Vliet, P.C.J., West, L.T., Hendrix, P.F., and Coleman, D.C. The influence of [[Enchytraeidae]] (Oligochaeta) on the soil [[porosity]] of small microcosms. 1993. Geoderma. 56:287-299.

Njhenshu: The LinkTitles extension automatically added links to existing pages (https://github.com/bovender/LinkTitles).

2023-03-31T18:25:51Z

← Older revision		Revision as of 14:25, 31 March 2023
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	[[File:Enchytraeids.JPG\|200px\|thumb\|left\|Enchytraeids in soil [https://www.wur.nl/en/Research-Results/Chair-groups/Environmental-Sciences/Soil-Biology-Group/Research/The-Soil-Biota/Enchytraeids-potworms.htm]]]		[[File:Enchytraeids.JPG\|200px\|thumb\|left\|Enchytraeids in soil [https://www.wur.nl/en/Research-Results/Chair-groups/Environmental-Sciences/Soil-Biology-Group/Research/The-Soil-Biota/Enchytraeids-potworms.htm]]]
	The geographic and climatic [[diversity]] of alfisols means that a greater variety of flora and fauna exists compared to other soil orders. Astigmatic [[mites]] are often found at their greatest densities in agroecosystems after events that increase soil organic matter, such as harvest, tillage, and the application of soil amendments [8]. Enchytraeids are often found at higher densities in alfisols compared to other soils – they are typically associated with high acidity and organic matter found in temperate forests, grasslands, and agricultural areas [4,11]. In forested and cultivated alfisols, enchytraeid populations typically occur in the upper soil horizons where organic matter is highest, but may be found at greater depths in grasslands soils (usually mollisols) [4,5].Other prominent soil fauna in agroecosystems include Carabidae (ground beetles) and various species of mound-building and humivorous termites [9].		The geographic and climatic [[diversity]] of alfisols means that a greater variety of flora and fauna exists compared to other soil orders. Astigmatic [[mites]] are often found at their greatest densities in agroecosystems after events that increase soil organic matter, such as harvest, tillage, and the application of soil amendments [8]. Enchytraeids are often found at higher densities in alfisols compared to other soils – they are typically associated with high acidity and organic matter found in temperate forests, grasslands, and agricultural areas [4,11]. In forested and cultivated alfisols, enchytraeid populations typically occur in the upper soil horizons where organic matter is highest, but may be found at greater depths in grasslands soils (usually mollisols) [4,5].Other prominent soil fauna in agroecosystems include Carabidae (ground beetles) and various species of mound-building and humivorous [[termites]] [9].

Njhenshu: The LinkTitles extension automatically added links to existing pages (https://github.com/bovender/LinkTitles).

2022-05-06T18:01:11Z

← Older revision		Revision as of 14:01, 6 May 2022
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	[10]USDA Natural Resources Conservation Service. Alfisols Map. https://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/class/maps/?cid=nrcs142p2_053591		[10]USDA Natural Resources Conservation Service. Alfisols Map. https://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/class/maps/?cid=nrcs142p2_053591

	[11]van Vliet, P.C.J., West, L.T., Hendrix, P.F., and Coleman, D.C. The influence of Enchytraeidae (Oligochaeta) on the soil porosity of small microcosms. 1993. Geoderma. 56:287-299.		[11]van Vliet, P.C.J., West, L.T., Hendrix, P.F., and Coleman, D.C. The influence of [[Enchytraeidae]] (Oligochaeta) on the soil porosity of small microcosms. 1993. Geoderma. 56:287-299.

Wmjackso at 18:57, 7 May 2021

2021-05-07T18:57:21Z

← Older revision		Revision as of 14:57, 7 May 2021
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	Temperate forests and cropland commonly occur on alfisols, and net primary productivity is usually high. In some areas, particularly eastern Europe/western Russia and the Midwestern United States, there is substantial occurrence of loess [3]. Loess refers to the depositional products of [[soil erosion]] by wind. These soils are generally very fertile, as evidenced by the loess deposits in the intensively cultivated Midwestern United States.		Temperate forests and cropland commonly occur on alfisols, and net primary productivity is usually high. In some areas, particularly eastern Europe/western Russia and the Midwestern United States, there is substantial occurrence of loess [3]. Loess refers to the depositional products of [[soil erosion]] by wind. These soils are generally very fertile, as evidenced by the loess deposits in the intensively cultivated Midwestern United States.


	== Distribution of Suborders in the United States ==		== Distribution of Suborders in the United States ==
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	[[File:AlfisolsSuborders.jpeg \| ]]		[[File:AlfisolsSuborders.jpeg \| ]]

	Suborder information and map from USDA Natural Resources Conservation Service [10]		Suborder information and map from USDA Natural Resources Conservation Service [10]

Wmjackso at 18:35, 7 May 2021

2021-05-07T18:35:28Z

← Older revision		Revision as of 14:35, 7 May 2021
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	== Description ==		== Description ==

	Diagnostic features of alfisols include a thin ochric epipedon, which is a light-colored surface horizon (see: [[Soil Horizons]]), and a prominent argillic horizon [2]. The argillic horizon is a product of silicate [[clay]] accumulation in the B horizon via illuviation, and cation exchange capacity in this horizon is over 35% saturated with base-forming cations [2]. Soil water potential greater than 1500 kPa is considered a “moist” soil moisture regime, and alfisols typically exceed this for most of the year, although for at least 3 months of the year soil moisture in alfisols falls below this threshold [5].		Diagnostic features of alfisols include a thin ochric epipedon, which is a light-colored surface horizon (see: [[Soil Horizons]]), and a prominent argillic horizon [2]. The argillic horizon is a product of silicate [[clay]] accumulation in the B horizon via illuviation, and cation exchange capacity in this horizon is over 35% saturated with base-forming cations [2]. Soil water potential greater than 1500 kPa is considered a “moist” soil moisture regime, and alfisols typically exceed this for most of the year, although for at least 3 months of the year soil moisture in alfisols falls below this threshold [6].
	[[File:Alfisol soil profile.jpg\|200px\|thumb\|left\|Alfisol soil profile [https://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/class/maps/?cid=nrcs142p2_053590]]]		[[File:Alfisol soil profile.jpg\|200px\|thumb\|left\|Alfisol soil profile [https://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/class/maps/?cid=nrcs142p2_053590]]]