View allAll Photos Tagged soilscience

Gypsic Haplosalids, coarse-loamy, mixed, hyperthermic (Soil AD131) soils are very deep, coarse-loamy soils with gypsum occurring in the subsoil and associated with salinity. They occur mostly in the southern part of the Emirate close to the Oman border, on the slightly raised parts of inland sabkha plain. They are typically well drained or somewhat excessively drained and have moderately rapid or rapid permeability.

 

Commonly these soils remain as barren land. They frequently have less than 5% vegetation cover of Haloxylon salicornicum and Zygophyllum spp. which occurs where eolian sands have accumulated allowing an adequate soil depth over underlying saline layers.

 

The soils are common in the inland sabkha plains mostly in the south and south-east of Abu Dhabi Emirate near the Oman border and around the Liwa area. The soil type has been recorded as a component in several map units.

 

Plate 29: Typical soil profile and associated landscape for Gypsic Haplosalids, coarse-loamy, mixed, hyperthermic (Soil AD131).

A representative soil profile of the Opuha series from New Zealand. (Photo provided by NZ Soils.co.nz and Waikato Regional Council.) For more information about New Zealand soils, visit;

nzsoils.org.nz/

 

Opuha soils from 0 - 20 cm; Very dark greyish brown silt loam, firm, fine polyhedral structure. In the New Zealand Soil Classification system these soils areMottled Fragic Pallic Soils. For more information about the New Zealand Soil Classification system, visit;

soils.landcareresearch.co.nz/describing-soils/nzsc/

 

In U.S. Soil Taxonomy, these soils are Aquic Fragiudepts. These are the Fragiudepts that have, in one or more horizons within 30 cm of the mineral soil surface, distinct or prominent redox concentrations and also aquic conditions for some time in normal years (or artificial drainage).

 

Aquic Fragiudepts have, at a shallow depth, redox concentrations of medium or high contrast and are somewhat wetter than Typic Fragiudepts. Commonly, they also have gentler slopes. Aquic Fragiudepts are of small extent in the United States. Most formed in late-Pleistocene sediments and are in the Northeastern States. The native vegetation consisted of forest. Most of these soils are nearly level and have been cleared and are used as cropland or pasture.

 

For additional information about U.S. Soil Taxonomy, visit:

www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...

 

A representative soil profile of the Dooaghs series in an area of unimproved grassland from Ireland. These soils formed in sandy drift with siliceous stones.

 

For detailed information about this soil, visit;

gis.teagasc.ie/soils/rep_profile_sheet.php?series_code=11...

 

For information about the soil series of Ireland, visit;

gis.teagasc.ie/soils/soilguide.php

 

In the Irish soil classification system these soils are Gleyic Brown Earths. These soils display gleyic features due to the presence of a shallow fluctuating groundwater table. This feature occurs in soils which are affected by seasonal or continuous waterlogging. The presence of iron and manganese concretions and/or nodules of grey colouring from continuous presence of a watertable, can be indicative of wetness.

 

For more information about describing and classifying soils using the Irish Soils Classification System, visit:

gis.teagasc.ie/soils/downloads/SIS_Final_Technical_Report...

 

Udivitrand Landscape, New Zealand — This landscape occurs within the Taupo Volcanic Zone on the North Island of New Zealand. This area includes the Taupo caldera volcano, which is the most frequently active rhyolitic volcano on Earth. Much of the native podocarp/ hardwood forest was destroyed by the approximately 233 AD Taupo eruption, which produced a violent pyroclastic flow that spread over an area of 20,000 sq km in approximately 7 minutes. Mean annual precipitation is approximately 1,100-1,200 mm (43-47 inches). Current land uses include dairy, sheep and beef production, and plantation forest (seen in background). (Image from University of Idaho; information courtesy of Dr. David Lowe, University of Waikato) (Notes and photo downloaded from: www.uidaho.edu/cals/soil-orders/andisols)

 

For more information about Dr. Lowe and his research, visit:

www.waikato.ac.nz/staff-profiles/people/dlowe

 

Udivitrands are the more or less well drained Vitrands that have a udic moisture regime. Characteristically, these soils have an ochric epipedon and a cambic horizon. Some have an argillic horizon. Most of the Udivitrands in the United States developed in Holocene deposits under coniferous forest vegetation.

 

Vitrands are the more or less well drained, coarse textured Andisols. These are relatively young soils that occur mostly near volcanoes. Most of the Vitrands in the United States are in Oregon, Washington, and Idaho. Vitrands formed mainly under coniferous forest vegetation. Characteristically, Vitrands have an ochric or mollic epipedon and a cambic horizon. Most of the Vitrands in the United States developed in Holocene deposits.

 

For additional information about U.S. Soil Taxonomy, visit:

www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...

 

Soil profile: A representative soil profile of Daeheung soil in Korea.

 

Landscape: The Daeheung soils occur on mountain foot slopes. They are derived from colluvial materials of the granite, granite gneiss and schist rocks. Dominant slopes are 7 to 15 percent and slopes range from 2 to 30 percent.

 

The Daeheung series are members of the fine-loamy, mixed, mesic family of Typic Hapludults [Cutanic Alisols (Alumic Hyperdystric Chromic) classified by WRB].

 

These soils have ochric epipedons and argillic horizons. Solum thickness ranges from 50 to 100 cm and depth to hard rock is more than 3 meters. Base saturation is less than 35 percent. 10 to 35 percent slightly weathered gravels and cobbles occur in the solum. A horizons are brown, dark yellowish brown, or yellowish brown gravelly loam or silt loam. Bt horizons are brown or yellowish red gravelly to cobbly loam or clay loam. C horizons are brown, yellowish red, or yellowish brown gravelly to cobbly loam or clay loam.

 

The Daeheung soils are well drained and moderate or moderately slow permeable. Runoff is medium depending on the slope gradient.

 

Most of these soils are used for upland crops such as barley, soybean, tobacco, mulberry and vegetables. A few areas are wooded growing pine trees.

 

For more information about soils in Korea, visit:

soil.rda.go.kr/eng/series/viewSeries.jsp?list=D&file=...

A representative soil profile of Medanito fine sand, in an area of Falfurrias-Atiras-Medanito complex, 0 to 5 percent slopes. A buried A horizon or surface layer is at a depth of 80 to 100 centimeters. (Soil Survey of Kenedy and Kleberg Counties, Texas; by Nathan I. Haile, and Dennis N. Brezina, Natural Resources Conservation Service)

 

The Medanito series consists of very deep, well drained, rapid permeable over moderately rapid permeable soils. These soils formed in recent sandy eolian deposits over loamy Quaternary alluvium on the Sandsheet Prairie of the South Texas Coastal Plain. Slope ranges from 0 to 5 percent. Mean annual air temperature is about 23 degrees C (73 degrees F) and mean annual precipitation is about 660 mm (26 in).

 

TAXONOMIC CLASS: Mixed, hyperthermic Typic Ustipsamments

 

Soil Moisture: An ustic moisture regime. The soil moisture control section is dry in some or all parts for more than 90, but less than 150 cumulative days in normal years. The SMCS is also either moist in some or all parts for 180 cumulative days or more, or moist for 90 or more consecutive days in normal years. November through April are the driest months, with a second low in July, while September is the wettest.

Particle-size control section (weighted average)

Clay content: 1 to 7 percent

Depth to redox concentrations: 18 to 51 cm (7 to 20 in)

Depth to buried soil: 51 to 102 cm (20 to 40 in)

 

USE AND VEGETATION: Used for livestock grazing and wildlife habitat. Native vegetation consists of liveoak, switchgrass, seacoast bluestem, seashore paspalum, partridge peas and mesquite. The ecological site is Sandy, PE 31-44 (R083EY706TX).

 

DISTRIBUTION AND EXTENT: Sand Sheet Prairie (MLRA 83E in LRR I) of southern Texas. The series is of moderate extent.

 

For additional information about the survey area, visit:

www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/texas/kenedykl...

 

For a detailed soil description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/M/MEDANITO.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#medanito

 

A representative soil profile of the Oruanui series from New Zealand. (Photo provided by NZ Soils.co.nz and Waikato Regional Council.) For more information about New Zealand soils, visit;

nzsoils.org.nz/

 

Oruanui soils from 0 - 19 cm; Black friable sand with few pumice lapilli. In the New Zealand Soil Classification system these soils are Podzolic Orthic Pumice Spols. For more information about the New Zealand Soil Classification system, visit;

soils.landcareresearch.co.nz/describing-soils/nzsc/

 

In U.S. Soil Taxonomy, these soils are Andic Haplorthod. These are the Haplorthods that have andic soil properties throughout horizons that have a total thickness of 25 cm or more within 75 cm either of the mineral soil surface or of the top of an organic layer with andic soil properties, whichever is shallower.

 

Andic Haplorthod do not have a lithic contact within 50 cm of the soil surface, fragic soil properties, saturation with water for extended periods within 100 cm of the soil surface, or lamellae. They occur in Washington and are wooded.

 

Orthods are the relatively freely drained Spodosols that have a horizon of accumulation containing aluminum, or aluminum and iron, and organic carbon. These are the most common Spodosols in the northern parts of Europe and in the United States. They formed predominantly in coarse, acid Pleistocene or Holocene deposits under a mostly coniferous forest vegetation. If undisturbed, Orthods normally have an O horizon, an albic horizon, and a spodic horizon and may have a fragipan.

 

Some of these soils, however, have been mixed by the roots of falling trees or by animals and have a very thin albic horizon or no albic horizon. In cultivated areas the albic horizon is very commonly mixed with part of the spodic horizon. In the United States, the moisture regime of Orthods is predominantly udic, but a few have a xeric regime. The soil temperature regimes range from frigid to hyperthermic. Orthods are extensive in the southeastern part of the United States, the Northeast, the Great Lakes States, and the mountains of the West.

 

For additional information about U.S. Soil Taxonomy, visit:

www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...

 

Soil profile: A representative soil profile of the Sutton series (Endoskeletic Luvisols) in England. (Cranfield University 2021. The Soils Guide. Available: www.landis.org.uk. Cranfield University, UK.)

 

Soils classified and described by the World Reference Base for England and Wales:

www.landis.org.uk/services/soilsguide/wrb_list.cfm

 

Sutton soils are extensive on level or gently sloping river terraces in the valleys of the Thames and its tributaries in Oxfordshire. They also occur in the Upper Stour valley in Dorset, and in the Welland, Nene and Great Ouse valleys in Northamptonshire, Bedfordshire and Cambridgeshire. The soils are mainly well drained, fine and coarse loamy and overlie calcareous river terrace gravel of flint, limestone or chalk at various depths. The principal soils, Sutton series, are fine loamy typical argillic brown earths over gravel at moderate depth. The associated Rougemont soils are similar but coarse loamy, and Badsey soils are fine loamy over gravelly typical brown calcareous earths.

 

In Eastern England the association lies on river terrace deposits, 2 m to 60 m above the rivers and locally on slopes between them. In the upper Stour valley, this association is found on river terrace deposits where Sutton, Rougemont, Badsey, Ludford and Maplestead soil, occur in no predictable pattern. In the Thames valley near Abingdon the association occurs on all the river terraces, but upstream it occurs on progressively higher terraces until near Lechlade it is on the fourth and highest only.

 

Suttonsoils are well drained, permeable soils through which excess winter rainfall drains rapidly (Wetness Class I). Sutton soils have moderate reserves of available water and are slightly or moderately droughty for cereals and potatoes and very droughty for grass.

 

These soils are easy to work and provide good arable land with cereals and vegetables, chiefly potatoes, as the main crops. In normal years there is plenty of opportunity in spring and autumn for working in good conditions and there is relatively little risk of damage to soil structure. These soils drain rapidly so there are also times during the winter when, after a dry period of about a week, the soil is workable. The principal soils are well suited to direct drilling. Sutton soils need occasional liming; potassium levels may be low. Droughtiness imposes limitations on both arable and grass crops so irrigation is often necessary for successful vegetable production, though the amount needed varies widely with crop, year and with depth of soil within the field. There is little risk of poaching but grass production is restricted in summer by drought.

 

For additional information about the soil association, visit:

www.landis.org.uk/services/soilsguide/mapunit.cfm?mu=57121

 

For more information on the World Reference Base soil classification system, visit:

www.fao.org/3/i3794en/I3794en.pdf

 

Photo: Susan Allen/ Stockton University

Soil profile: Profile of Ships clay. Slickensides are at a depth of about 50 centimeters. (Soil Survey of Robertson County, Texas; By Harold W. Hyde, Natural Resources Conservation Service)

 

Landscape: Cotton in an area of Ships clay, 0 to 1 percent slopes, rarely flooded. Cotton is a major crop in Robertson County. Ships soils are mainly used as cropland. Crops include cotton, corn, grain sorghum, small grain, and some improved pastures of bermudagrass, johnsongrass, or small grain. Native vegetation includes big bluestem, little bluestem, Indiangrass, switchgrass, Virginia wildrye, and beaked panicum. Adjacent to stream channels ash, elm, and pecan are the dominant trees.

 

Setting

Landform: Flood plain

Landscape position: Side slopes adjacent to natural drainageways within the flood plain of the Brazos River

Slope: Very gently sloping; convex surfaces

Shape of areas: Narrow and elongated

Size of areas: 10 to 150 acres

 

Typical Profile

TAXONOMIC CLASS: Very-fine, mixed, active, thermic Chromic Hapluderts

 

Surface layer:

0 to 15 inches—moderately alkaline clay that is dark reddish gray in the upper part and reddish brown in the lower part

Subsoil:

15 to 24 inches—red, moderately alkaline clay

24 to 50 inches—reddish brown, moderately alkaline clay

50 to 65 inches—light brown, moderately alkaline clay that has thin strata of silt loam

65 to 80 inches—light brown, moderately alkaline clay that has thin strata of pink loam

 

Soil Properties

Depth: Very deep

Drainage class: Moderately well drained

Water table: None within a depth of 6 feet

Flooding: 1 to 5 times in 100 years; for a period of 2 to 7 days

Runoff: Very high

Permeability: Very slow

Available water capacity: High

Root zone: Very deep

Natural soil fertility: High

Shrink-swell potential: Very high

Hazard of water erosion: Moderate

 

Composition

Ships soil and similar inclusions: 85 to 95 percent

Contrasting inclusions: 5 to 15 percent

 

Use and Management

Major land use: Rangeland

Other land uses: Cropland and pasture

Pasture

Major limitations:

• The very slow permeability restricts water movement and the root development of improved grasses.

• The clay surface layer requires a well prepared seedbed for the establishment of improved grasses.

Minor limitations:

• Water erosion is a moderate hazard during seedbed preparation for improved grasses.

Cropland

Major limitations:

• The very slow permeability restricts water movement and the root development of crops.

Minor limitations:

• Water erosion is a moderate hazard when the soil is cultivated.

• The clay surface layer is more difficult to till when the soil is too wet or too dry.

Rangeland

Major limitations:

• The very slow permeability restricts water movement and the root development of native plants.

Urban development

Major limitations:

• Because of the hazard of flooding, this soil is unsuitable for most dwellings and poorly suited to other urban uses.

• The flooding, low soil strength, and shrink-swell potential are limitations affecting the construction of local roads and streets.

• The risk of corrosion is high for uncoated steel.

 

Interpretive Groups

Land capability classification: 2e

Ecological site: Clayey Bottomland

Pasture management group: Clayey Bottomland

 

For additional information about the survey area, visit:

www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/texas/TX395/0/...

 

For a detailed soil description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/S/SHIPS.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#ships

 

Some of the red bodies in the subsoil are plinthite. Plinthite is a firm, iron oxide rich concentration that irreversibly hardens after exposure to repeated wet dry cycles. Scale is in cm.

 

Illustrated Guide to Soil Taxonomy (p. 4-418)

 

Photo: Susan Allen/ Stockton University

A representative soil profile of the Clonroche series in an area of improved grassland from Ireland. These soils formed in fine loamy drift with siliceous stones.

 

For detailed information about this soil, visit;

gis.teagasc.ie/soils/rep_profile_sheet.php?series_code=11...

 

For information about the soil series of Ireland, visit;

gis.teagasc.ie/soils/soilguide.php

 

In the Irish soil classification system these soils are Typical Brown Earths. These soils have distinct topsoil, without any distinguishing features.

 

For more information about describing and classifying soils using the Irish Soils Classification System, visit:

gis.teagasc.ie/soils/downloads/SIS_Final_Technical_Report...

 

Jerry Griffith in Graves County earned 1st place in District 1 No-Till division of the 2011 Kentucky Corn Yield Contest. His yield was 247.34 buA using DeKalb DK63-87 seed. Pictured with Griffith is Ray Allan Mackey (right), president of the Kentucky Corn Growers Association. KyCGA sponsors the yield contest.

A soil profile of Frederick silt loam. The argillic horizon begins at a depth of about 15 centimeters and extends to below a depth of more than 150 centimeters. (Soil Survey of Bland County, Virginia; by Robert K. Conner, Natural Resources Conservation Service)

 

The Frederick series consists of very deep, well drained soils formed in residuum derived mainly from dolomitic limestone with interbeds of sandstone, siltstone, and shale. They are on are nearly level to very steep uplands. Permeability is moderate. Slopes range from 0 to 60 percent. Mean annual precipitation is about 42 inches, and mean annual temperature is about 55 degrees F.

 

TAXONOMIC CLASS: Fine, mixed, semiactive, mesic Typic Paleudults

 

Solum thickness is more than 60 inches. Depth to bedrock is more than 72 inches. Depth to the top of the argillic horizon ranges from 0 to 20 inches. Variegated colors in the solum range from 40 to more than 60 inches below the soil surface. Rock fragments are mostly chert and range from 0 to 60 percent in the A, E, BA, and BE horizons, and 0 to 35 percent in the Bt, BC, and C horizons. In some areas the upper part of the solum is capped with as much as 20 inches of silty material. The soil ranges from very strongly acid through moderately acid, unless limed.

 

USE AND VEGETATION: Most of these soils are cleared and cultivated. Crops are corn, small grain, hay, tobacco, and apple orchards. Most of the steeper areas are in pasture or forest. Vegetation is largely hardwoods such as oak, hickory, maple, and yellow poplar.

 

DISTRIBUTION AND EXTENT: Virginia, West Virginia, Kentucky, Maryland, and Tennessee. The series is of large extent.

 

For additional information about the survey area, visit:

www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/virginia/VA021...

 

For a detailed soil description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/F/FREDERICK.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#frederick

 

A representative soil profile of the Moosabec series. (Photo provided by Jim Turenne, USDA-NRCS; New England Soil Profiles)

 

The Moosabec series consists of very deep, very poorly drained soils that formed mostly in slightly decomposed organic soil material from Sphagnum moss on raised bogs on glaciated terrain. Estimated saturated hydraulic conductivity is high or very high. Permeability is rapid. Slope ranges from 0 to 1 percent. Mean annual precipitation is about 1190 mm (47 inches). Mean annual temperature is about 7 degrees C (44 degrees F).

 

TAXONOMIC CLASS: Dysic, frigid Typic Sphagnofibrists

 

The thickness of organic materials is 160 centimeters (63 inches) or more and ranges to over 6 meters (20 feet). The depth to bedrock is more than 160 centimeters (63 inches). The content of woody fragments is 0 to 20 percent in the surface tier and 0 to 10 percent in the subsurface and bottom tiers. Fibric material is dominant in most or all of the control section, and extends to as much as 3 meters (10 feet) deep in some places. Layers of hemic material are in the control section in some pedons, but occupy less than 25 centimeters (10 inches) of aggregate thickness in the subsurface and bottom tiers. The hemic material is commonly in the bottom tier.

 

USE AND VEGETATION: Sphagnum peat from Moosabec soils is of considerable commercial value. These soils commonly have a sparse cover of slow growing black spruce and tamarack. Common heath family shrubs are Labrador tea, leatherleaf, rhodora, sheep laurel, bog laurel, and bog rosemary. Cloudberry and crowberry shrubs are found in some locations. Pitcher plant and sundew are common insectivorous plants. The moss cover is composed mostly of Sphagnum.

 

DISTRIBUTION AND EXTENT: The eastern, central and southern portions of Maine. This series is of moderate extent. At least 10,000 acres are estimated to occur in Maine. The series will likely be recognized to replace Waskish where historically mapped in region R.

 

For additional information about New England soils, visit:

nesoil.com/images/images.htm

 

For a detailed soil description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/M/MOOSABEC.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#moosabec

 

The Quetico series consists of very shallow, well drained soils.(Soil Survey of Voyageurs National Park, Minnesota; by Peter Weikle, Natural Resources Conservation Service)

 

These soils formed in loamy noncalcareous glacial drift on uplands with relief controlled by the underlying bedrock. These soils have bedrock beginning at depths ranging from 4 to 10 inches. The saturated hydraulic conductivity is moderate in the loamy mantle. Slopes range from 2 to 90 percent. Mean annual precipitation is about 28 inches and mean annual air temperature is about 37 degrees F.

 

TAXONOMIC CLASS: Loamy, isotic, acid, frigid Lithic Udorthents

 

Thickness of solum and depth to bedrock range from 4 to 10 inches. Texture of the material above the rock contact is loam, silt loam, sandy loam, fine sandy loam or gravelly and cobbly analogues. Content of gravel by volume ranges from 3 to 35 percent. Stones and boulders within or on the soil range from 0 to 3 percent. The gravel is dominantly granite or gabbro, but sandstone is included in a few places. Reaction is very strongly acid or strongly acid.

 

USE AND VEGETATION: These soils mostly are in mixed deciduous and coniferous forest. Dominant trees are jack pine, red pine, white pine, quaking aspen, paper birch, balsam fir and mountain ash. Major resource uses are recreation, timber, watershed, and wildlife habitat.

 

DISTRIBUTION AND EXTENT: MLRA's 88, 90, 93 and 142. The Laurentian Shield region of northeastern Minnesota and in New York. Moderately extensive.

 

For additional information about the survey area, visit:

www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/minnesota/voya...

 

For a detailed soil description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/Q/QUETICO.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#quetico

 

Involutions of soil material (brown) are mixed into the underlying soil by cryoturbation. These soils have an ochric (typically thin and/or light-colored) epipedon and have sufficient moisture for cryoturbation. Commonly, the cryoturbation is not well expressed. These soils occur in Alaska, Canada, and Siberia.

 

Illustrated Guide to Soil Taxonomy (p. 4-209)

 

A representative soil profile of the Rexburg series.

 

The Rexburg series consists of deep and very deep, well drained soils that formed in loess and silty alluvium derived from loess. They are on loess covered fan terraces, foothills, and basalt plains. Slopes are 0 to 60 percent. The mean annual precipitation is about 14 inches and the mean annual temperature is about 44 degrees F.

 

TAXONOMIC CLASS: Coarse-silty, mixed, superactive, frigid Calcic Haploxerolls

 

Mean annual soil temperature - 40 to 47 degrees F

Particle-size control section - 8 to 18 percent clay

Thickness of the mollic epipedon - 12 to 20 inches

Depth to the calcic horizon - 18 to 35 inches

 

USE AND VEGETATION: This Rexburg soil is used mainly for nonirrigated and irrigated cropland. The potential natural vegetation is mainly mountain big sagebrush and bluebunch wheatgrass.

 

DISTRIBUTION AND EXTENT: Southeastern Idaho. The series is extensive.

 

For additional information about Idaho soils, please visit:

storymaps.arcgis.com/stories/97d01af9d4554b9097cb0a477e04...

 

For a detailed soil description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/R/REXBURG.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#rexburg

 

The Hymas series consists of shallow, well drained soils that formed in residuum and colluvium from limestone. The Hymas soils are on mountainsides, ridges or uplands. Slopes are 10 to 75 percent. The mean annual precipitation is about 13 inches and the mean annual temperature is about 44 degrees F.

 

TAXONOMIC CLASS: Loamy-skeletal, carbonatic, frigid Lithic Haploxerolls

 

Soil moisture - Moist in late fall, winter and spring; dry from late June through September.

Soil temperature - 42 to 47 degrees F.

Average summer soil temperature - 59 to 66 degrees F.

Mollic epipedon thickness - 7 to 14 inches.

Depth to bedrock - 10 to 20 inches.

Control section

Clay content: 8 to 27 percent.

Rock fragments: 35 to 80 percent dominantly angular fragments of limestone.

 

DRAINAGE AND PERMEABILITY: Well drained; medium or rapid runoff; moderate permeability.

 

USE AND VEGETATION: Rangeland and wildlife habitat. The present vegetation is mainly big sagebrush, cheatgrass, phlox, bluebunch wheatgrass, Sandberg bluegrass, rabbitbrush and bitterbrush.

 

For additional information about Idaho soils, please visit:

storymaps.arcgis.com/stories/97d01af9d4554b9097cb0a477e04...

 

For a detailed description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/H/HYMAS.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#hymas

  

TOMLIN SERIES

Depth class: Very deep

Agricultural drainage class: Well drained

Saturated hydraulic conductivity class: Moderately high

Landform: Piedmont uplands

Landform position: Broad ridges and side slopes

Parent material: Residuum weathered from diorite, gabbro, diabase, and/or gneiss

Slope: 2 to 25 percent

 

TAONOMIC CLASS: Fine, kaolinitic, mesic Rhodic Kanhapludults

 

RANGE IN CHARACTERISTICS:

Depth to top of argillic or kandic horizon: 2 to 20 inches

Depth to base of argillic or kandic horizon: More than 25 inches

Depth to bedrock: Greater than 80 inches

Depth to seasonal high water table: Greater than 72 inches

Rock Fragment Content: 0 to 35 percent in the A and E horizons and 0 to 15 percent in the B and C horizons; mostly gravel and cobbles

Soil Reaction: Very strongly acid to moderately acid throughout, unless limed.

Mica content: 0 to 20 percent, by volume mica flakes in the A, B, and 0 to 50 percent by volume in the BC and C horizon

 

USE AND VEGETATION:

Major Uses: Cultivated crops, pasture, and forest

Dominant Vegetation: Where cultivated--small grains, corn, soybeans, hay, tobacco, and orchards. Where forested--Eastern white pine, Virginia pine, red oak, white oak, post oak, hickory, blackgum, red maple, yellow poplar, and dogwood

 

DISTRIBUTION AND EXTENT:

Distribution: Virginia and North Carolina

Extent: Moderate

 

Tomlin soils were previously mapped as Lloyd soils. The April 1997 relocation of the mesic/thermic line in North Carolina and Virginia necessitated the establishment of the Tomlin series as a mesic counterpart. Tomlin soils are commonly associated with Clifford soils (fine, kaolinitic, mesic Typic Kanhapludults). Clifford soils formed in residuum weathered from felsic crystalline rock and have B horizons with hue of 5YR or redder with moist value of 4 or more. Tomlin soils formed in mixed felsic to mafic crystalline rock (primarily amphibolite) and have B horizons with hue of 2.5YR or redder with moist value of less than 4.

 

For a detailed soil description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/T/TOMLIN.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#tomlin

Soil having discontinuous horizons as a result of their partial destruction (sale in feet). Belgium. Soil Taxonomy, 1st Edition, 1975, (p. 97).

A representative soil profile of the Ballynabreen series in an area of improved grassland from Ireland. These soils formed in coarse loamy drift with igneous and metamorphic stones.

 

For detailed information about this soil, visit;

gis.teagasc.ie/soils/rep_profile_sheet.php?series_code=07...

 

For information about the soil series of Ireland, visit;

gis.teagasc.ie/soils/soilguide.php

 

In the Irish soil classification system these soils are Humic Surface-water Gleys. These soils have evidence of gleying within 40 cm and humose topsoil.

 

For more information about describing and classifying soils using the Irish Soils Classification System, visit:

gis.teagasc.ie/soils/downloads/SIS_Final_Technical_Report...

 

A representative soil profile of the Te Anau series from New Zealand. (Photo provided by NZ Soils.co.nz and Waikato Regional Council.) For more information about New Zealand soils, visit;

nzsoils.org.nz/

 

Te Anau soils from 0 - 20 cm; Very dark grey sandy loam, friable, fine spheroidal and polyhedral structure. In the New Zealand Soil Classification system these soils are Fragic Allophanic Brown Soils. For more information about the New Zealand Soil Classification system, visit;

soils.landcareresearch.co.nz/describing-soils/nzsc/

 

In U.S. Soil Taxonomy, these soils are Andic Dystrudepts. Andic Dystrudepts have some andic soil properties in a layer in the upper part that is 18 cm or more thick. Some of the soils contain a significant amount of volcanic ash. Some have an umbric epipedon. In addition, Te Anau soils exhibit fragic soil properties.

 

Andic Dystrudepts are moderately extensive in the Northwestern United States. The native vegetation consists mostly of coniferous forest. Most of these soils support their native vegetation and are used as forest. A few of the less sloping soils have been cleared and are used as cropland or pasture.

 

For additional information about U.S. Soil Taxonomy, visit:

www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...

 

This photo accompanies Figure 14.—Indicator A9, 1 cm Muck. [Field Indicators of Hydric Soils in the United States].

 

Upper soil profile of the Duckston soil series. The Duckston series (Typic Psammaquents) consists of poorly drained sands near the Lower and Mid-Atlantic coast. They have very slow runoff and very rapid permeability above the water table. The water table fluctuates in relation to the tides and the surface is flooded following heavy rains or high storm tides.

 

Duckston soils are mainly in shallow depressions between coastal dunes and on nearly level flats between the dunes and marshes generally at elevations less than 5 feet above mean tide level. Slopes are typically less than 2 percent and surfaces are plane to concave. The soil formed in sandy sediments reworked by waves and wind. Average annual precipitation near the type location is about 48 inches and mean annual temperature about 62 degrees F. The soils are periodically flooded with salt water; salinity is variable according to length of time since last flooding.

 

Vegetation is a coastal shrub plant community. Locally, a maritime forest exists on a minor acreage of the soil. Duckston soils are of moderate extent along the coast in Mississippi, Alabama, Florida, Georgia, South Carolina, North Carolina, and Virginia.

Sugarcane plantations has made São Martinho one of the largest sugar and ethanol companies in Brazil – seeking the digital transformation of operations at its mills. Through the constant search for process optimization, it was necessary to reduce losses and thereby gain efficiency through a single platform capable of supporting real-time orchestration throughout the process.

 

For more information about Sao Martinho, visit;

d29n0te02mpm3j.cloudfront.net/m/77ff80226799b16c/original...

A representative soil profile of a Typic Dystrudept from the Maramures Mountains, Ukraine-Rumania border, Ukraine. Photo by P. Samonil.)

 

The central concept or Typic subgroup of Dystrudepts is fixed on soils that are moderately deep or deep to hard rock, are freely drained and acid, have an ochric epipedon, and do not have any intermittent argillic, natric, or kandic horizon.

 

Dystrudepts are the acid Udepts of humid and perhumid regions. They developed mostly in late-Pleistocene or Holocene deposits. Some developed on older, steeply sloping surfaces. The parent materials generally are acid, moderately or weakly consolidated sedimentary or metamorphic rocks or acid sediments. A few of the soils formed in saprolite derived from igneous rocks. The vegetation was mostly deciduous trees. Most of the Dystrudepts that formed in alluvium are now cultivated, and many of the other Dystrudepts are used as pasture. The normal horizon sequence in Dystrudepts is an ochric epipedon over a cambic horizon. Some of the steeper Dystrudepts have a shallow densic, lithic, or paralithic contact. Dystrudepts are extensive in the United States, mostly in the Eastern and Southern States.

 

For more information about soils and the Michigan State University-Department of Geography, visit:

project.geo.msu.edu/soilprofiles/

 

For additional information about soil classification, visit:

www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...

 

Field and laboratory data are critical to the understanding of the properties and genesis of a single pedon, as well as to the understanding of fundamental soil relationships based on many observations of a large number of soils. Key to the advancement of this body of knowledge has been the cumulative effort of several generations of scientists in developing methods, designing and developing analytical databases, and investigating soil relationships based on these data.

 

Methods development result from a broad knowledge of soils, encompassing topical areas of pedology, geomorphology, micromorphology, physics, chemistry, mineralogy, biology, and field and laboratory sample collection and preparation. The purpose of this manual, the “Soil Survey Field and Laboratory Methods Manual, Soil Survey Investigations Report (SSIR) No. 51,” is to (1) serve as a standard reference in the description of site and soils sampling strategies and assessment techniques and (2) provide detailed method descriptions for the collection and analysis of soil, biological, water, and plant samples in the field or field-office setting. This manual is intended to be a tool in the development of a long-term analytical database by which research and other investigative studies can be more directionally applied to onsite technologies and thus improve and enhance land productivity and sustainability.

 

Citation: Soil Survey Staff. 2014. Soil Survey Field and Laboratory Methods Manual. Soil Survey Investigations Report No. 51, Version 2.0. R. Burt and Soil Survey Staff (ed.). U.S. Department of Agriculture, Natural Resources Conservation Service.

 

To view, print, or save a copy of the "Soil Survey Field and Laboratory Methods Manual" click HERE

 

For a list of current "Soil Survey Lab Manuals" visit SSLM

 

Toisnot soils are in shallow depressions, around the heads of drainageways, and on the outer fringe of stream terraces next to the better drained uplands, in the upper Coastal Plain. They occupy the transition areas between soils with contrasting drainage. On some landscapes, these soils extend down shallow drainageways for short distances. Slopes are generally less than 2 percent. The soil formed in moderately coarse textured fluvial or marine sediments.

 

TAXONOMIC CLASS: Coarse-loamy, siliceous, semiactive, thermic Typic Fragiaquults

 

Depth to the upper boundary of the fragipan commonly ranges from 20 to 40 inches but in some areas it ranges from 10 to 45 inches. In wet seasons, the fragipan is dry to moist, whereas, the adjacent horizons are saturated. Reaction ranges from extremely acid to strongly acid throughout the profile, unless the surface has been limed.

 

USE AND VEGETATION: Most areas are in mixed forests of hardwoods and pine. Native trees include oak, maple, sweetgum, yellow-poplar, and loblolly pine, with understory plants as sweet bay, myrtle, gallberry, and smilax. Small acreages have been cleared and used for pasture, corn, and soybeans.

 

DISTRIBUTION AND EXTENT: Upper Coastal Plain areas of North Carolina and possibly South Carolina and Virginia. The series is inextensive.

 

For a detailed description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/T/TOISNOT.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#toisnot

A Hapli- Permagelic Gleyosol and landscape. These soils mainly distribute in the northern Greater Khingan Mountains and mountain areas on northern Qinghai-Tibet Plateau, dispersing, in isolated island forms, in swamping lower terraces, floodplains, swamp edge or shady slope covered with plants. In seasonal thawing period, soil parts above the permafrost would accumulate excessive moisture, leading to gleyization. However, there is no histic epipedon in the profile. (Photos and notes courtesy of China Soils Museum, Guangdong Institute of World Soil Resources; with revision.)

 

In Chinese Soil Taxonomy, Gleyosols soils that exhibit redoximorphic conditions under a permanent of fluctuating water table. In Soil Taxonomy these soils are mostly Inceptisols, Gelisols, or Entisols.

 

For additional information about this soil and the Soils Museum, visit:

www.giwsr.com/en/article/index/208

 

For additional information about Soil Taxonomy, visit:

sites.google.com/site/dinpuithai/Home

The Cerrado was thought challenging for agriculture until researchers at Brazil’s agricultural and livestock research agency, Embrapa, discovered that it could be made fit for industrial crops by appropriate additions of phosphorus and lime. In the late 1990s, between 14 million and 16 million tons of lime were being poured on Brazilian fields each year. The quantity rose to 25 million tons in 2003 and 2004, equalling around five tons of lime per hectare. This manipulation of the soil allowed for industrial agriculture to grow exponentially in the area. Researchers also developed tropical varieties of soybeans, until then a temperate crop, and currently, Brazil is the world's main soyabeans exporter due to the boom in animal feed production caused by the global rise in meat demand. Today the Cerrado region provides more than 70% of the beef cattle production in the country, being also a major production center of grains, mainly soya, beans, maize and rice. Large extensions of the Cerrado are also used for the production of cellulose pulp for the paper industry, with the cultivation of several species of Eucalyptus and Pinus, but as a secondary activity. Coffee produced in the Cerrado is now a major export.

 

Soils of the cerrado are in the order of Oxisols. Oxisols are an order in USDA soil taxonomy, best known for their occurrence in tropical rain forest, 15-25 degrees north and south of the Equator. They are classified as ferralsols in the World Reference Base for Soil Resources; some oxisols have been previously classified as laterite soils.The main processes of soil formation of oxisols are weathering, humification and pedoturbation due to animals. These processes produce the characteristic soil profile. They are defined as soils containing at all depths no more than 10 percent weatherable minerals, and low cation exchange capacity. Oxisols are always a red or yellowish color, due to the high concentration of iron(III) and aluminium oxides and hydroxides. In addition they also contain quartz and kaolin, plus small amounts of other clay minerals and organic matter.

 

For more information on Soil Taxonomy, visit:

www.nrcs.usda.gov/wps/portal/nrcs/main/soils/survey/class/

 

For more photos related to soils and landscapes visit:

www.flickr.com/photos/soilscience/sets/72157622983226139/

A soil profile of a poorly drained Natraqualf in Thailand. The sandy surface layer is underlain by a pinkish gray subsoil beginning at a depth of about 15 cm. The subsoil has a weak grade of prismatic structure and a high content of sodium. This soil is used for rice production. Note the water table at a depth of about 145 cm. (Soil Survey Staff. 2015. Illustrated guide to Soil Taxonomy. U.S. Department of Agriculture, Natural Resources Conservation Service, National Soil Survey Center, Lincoln, Nebraska)

 

Natraqualfs have a clay-enriched subsoil with high levels of sodium saturation (natric horizon). Typically, ground water perches above the natric horizon at some period and saturates the soil at another period. Natraqualfs are allowed, but not required, to have a glossic (degraded argillic) horizon. In the United States, most of these soils have a mesic, thermic, or hyperthermic temperature regime but a few are frigid. If undisturbed,

 

Natraqualfs commonly have a thin A horizon overlying a thin albic (light-colored and leached) horizon that, in turn, overlies the natric subsoil horizon. If the soils are plowed, the two upper horizons and part of the natric horizon or only part of the two upper horizons may be mixed. In the United States, the vegetation on Natraqualfs before cultivation was most commonly grass or mixed grass and drought-tolerant trees. In humid regions where annual precipitation is 100 cm or more, the presence of sodium generally is attributed to very slow permeability in the natric horizon. The permeability is so slow that there is thought to be less leaching of sodium than there is release of sodium by the weathering of feldspars. Many Natraqualfs in the United States formed in loess or alluvium of Wisconsinan age. Some Natraqualfs are in basins or on lowlands and are subject to flooding, and the sodium in them may be supplied by salty ground water or sea water. Characteristically, areas of Natraqualfs are small

 

For additional information about soil classification, visit:

www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...

 

Photo: Susan Allen/ Stockton University

Soil profile: A representative soil profile of the McCall soil series. (Valley County, Idaho)

 

The McCall series consists of very deep, somewhat excessively drained soils that formed in moderately coarse and coarse textured cobbly and stony glacial till. McCall soils are on glacial moraines and have slopes of 5 to 50 percent. The average annual precipitation is about 25 inches and the mean annual air temperature is about 39 degrees F.

 

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Typic Humicryepts

 

Rock fragments range from 35 to 80 percent throughout the profile, and range from small angular or rounded pebbles to cobblestones and large stones. The soil is slightly or moderately acid. Base saturation is 40 to 50 percent in the epipedon. Mean annual soil temperature is 41 degrees to 43 degrees F.

 

USE AND VEGETATION: Used for pasture or range. Vegetation is Idaho fescue, Kentucky bluegrass, mountain brome, snowberry, pine reedgrass, and lodgepole pine.

 

DISTRIBUTION AND EXTENT: Moraine area in the northern part of Long Valley, Valley County, Idaho. The series is inextensive.

 

For additional information about Idaho soils, please visit:

storymaps.arcgis.com/stories/97d01af9d4554b9097cb0a477e04...

 

For a detailed soil description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/M/MCCALL.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#mccall

Current faculty, staff and alumni gathered at the Plant and Soil Science Reunion in the Plant Science Plaza during Roundup week.

A representative soil profile of the series from New Zealand. (Photo provided by NZ Soils.co.nz and Waikato Regional Council.) For more information about New Zealand soils, visit;

nzsoils.org.nz/

 

Pakipaki soils from 0 - 18 cm : Very dark greyish brown silt loam, moderately pedal, medium blocky macrofabric. In the New Zealand Soil Classification system these soils are Typic Sandy Gley Soils. For more information about the New Zealand Soil Classification system, visit;

soils.landcareresearch.co.nz/describing-soils/nzsc/

 

In U.S. Soil Taxonomy, these soils are Aquandic Humaquepts. Theses soils have some andic soil properties in a layer in the upper 75 cm that is 18 cm or more thick. The clays in this layer normally do not disperse well and have a high pH-dependent charge. Typically, this layer is at or very close to the soil surface. An umbric epipedon is common but is not required. These soils are of small extent in the United States and are known to occur in Washington, Oregon, and Idaho.

 

Most of the soils supported water-tolerant forest vegetation, and some supported water-tolerant grasses and shrubs. Many of the soils are artificially drained and are used as cropland or hayland, and many are used as forest. Some are used as pasture and some as wildlife habitat.

 

For additional information about U.S. Soil Taxonomy, visit:

www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...

 

A representative soil profile of the Knockastanna series in an area of unimproved grassland from Ireland. These soils formed in loamy material over shale bedrock.

 

For detailed information about this soil, visit;

gis.teagasc.ie/soils/rep_profile_sheet.php?series_code=08...

 

For information about the soil series of Ireland, visit;

gis.teagasc.ie/soils/soilguide.php

 

In the Irish soil classification system these soils are Stagno Iron-pan Podzols. These soils have a peaty topsoil above a gleyed albic horizon (Eg) that rests directly on a cemented, continuous thin iron-pan (Bf) that impedes vertical water movement.

 

For more information about describing and classifying soils using the Irish Soils Classification System, visit:

gis.teagasc.ie/soils/downloads/SIS_Final_Technical_Report...

A soil profile of a moderately well drained Haplustept in Taiwan. This soil formed in stratified layers of loamy alluvium. An ochric epipedon extends to a depth of about 30 cm. Below this is a cambic horizon that extends to about 80 cm. The gray and red colors below a depth of about 80 cm are redoximorphic features that formed due to saturation with water and reduction of iron. There is a water table at the base of the profile. (Soil Survey Staff. 2015. Illustrated guide to Soil Taxonomy. U.S. Department of Agriculture, Natural Resources Conservation Service, National Soil Survey Center, Lincoln, Nebraska)

 

Haplustepts are the more or less freely drained Ustepts that are calcareous at some depth or have high base saturation. They commonly have an ochric (typically thin and/or light-colored) epipedon over a cambic (minimal soil development) subsoil horizon. Some have an accumulation of calcium carbonate in the subsoil. The native vegetation commonly was grass, but some of the soils supported trees. Haplustepts in the United States are mostly on the Great Plains.

 

For additional information about soil classification, visit:

www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...

 

Current faculty, staff and alumni gathered at the Plant and Soil Science Reunion in the Plant Science Plaza during Roundup week.

A soil profile of a Glossudalf in Idaho. The subsoil from depths of about 60 to 150 cm is a glossic horizon with a brown and gray color pattern. The gray areas consist of eluvial material from which a significant amount of clay has been leached. The brown areas are illuvial clay-enriched materials (argillic part of the horizon). This color pattern is easily seen on the lower left side of the photo, where the soil profile has been smoothed. A glossic horizon is thought to be a degrading argillic horizon. (Soil Survey Staff. 2015. Illustrated guide to Soil Taxonomy. U.S. Department of Agriculture, Natural Resources Conservation Service, National Soil Survey Center, Lincoln, Nebraska)

 

Glossudalfs have an argillic (clay accumulation) subsoil horizon that shows evidence of destruction in the form of a glossic horizon. The glossic horizon extends through the argillic horizon in some of these soils. Glossudalfs are more extensive in Europe than in the United States.

 

The glossic horizon is a degrading argillic, kandic, or natric horizon. In this horizon, eluviation of clay and iron oxides is occurring. This results in the formation of albic materials to the extent that they make up 15 to 85 percent of the volume of the horizon. The albic materials appear as light-colored tongues extending into the horizon between ped surfaces. As the degradation process proceeds, the tongues occupy progressively more of the horizon, until only remnants of the former argillic, kandic, or natric horizon remain.

 

For additional information about soil classification, visit:

www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...

Current faculty, staff and alumni gathered at the Plant and Soil Science Reunion in the Plant Science Plaza during Roundup week.

An area of bouldery soil (class 1).

 

Fragments on the Surface

This section discusses the description of rock fragments (especially stones and boulders) that are on the soil as opposed to in the soil. The  description  of  gravel,  cobbles,  and  channers  (≥ 2mm  but  < 250 mm  in  diameter)  differs  from  that  for  stones  and  boulders  (≥ 250 mm  in  diameter) because an important aspect of gravel, cobbles, and channers is their areal percent cover on the ground surface. This cover provides some protection from wind and water erosion. It may also interfere with seed placement and emergence after germination. For stones and boulders, the percent of cover is not of itself as important as the interference with mechanical manipulation of the soil. For example, a very small areal percentage  of  large  fragments,  insignificant  for  erosion  protection,  may  interfere with tillage, tree harvesting, and other operations involving machinery.

 

Class 1.—Stones or boulders cover 0.01 to less than 0.1 percent of the surface. The smallest stones are at least 8 meters apart; the

smallest  boulders  are  at  least  20  meters  apart .

 

Soil Survey Manual, Ag. Handbook 18, 2017, (p. 144).

 

A representative of profile of the Songjeong soil (fine-loamy, Typic Hapludult) from the Oklahoma training area along the Civilian Control Zone in South Korea. The image is illustration 3.2 from the Planning Level Survey, 8th US Army Korea (1998). The primary purpose of planning level surveys are to ensure Army activities and natural resources conservation measures on mission land are integrated and consistent with federal stewardship requirements and host nation agreements.

 

Songjeong soils are on low undulating hills. Elevation ranges from about 5 to 50 meters. The native vegetation is mixed deciduous hardwood forest. The soils formed in material weathered from granite. The land is primarily forested or cultivated.

 

The central concept or Typic subgroup of Hapludults is fixed on freely drained soils that are moderately deep or deeper to hard rock. Typic Hapludults are of very large extent in the Eastern and Southeastern United States. The natural vegetation consisted of forest plants. Slopes range from nearly level to steep. Where slopes are suitable, many of these soils are used as cropland. Many of the soils, particularly those that are steep, are used as forest. Some are used as pasture or homesites.

 

For more information about Korea soil series, visit:

soil.rda.go.kr/eng/series/series.jsp

 

A representative soil profile of the Roddenagh series in a forested area from Ireland. These soils formed in loamy material over shale and slate bedrock.

 

For detailed information about this soil, visit;

gis.teagasc.ie/soils/rep_profile_sheet.php?series_code=08...

 

For information about the soil series of Ireland, visit;

gis.teagasc.ie/soils/soilguide.php

 

In the Irish soil classification system these soils are Ferric Podzols (soils affected by Fe/Al chemistry increase).

 

For more information about describing and classifying soils using the Irish Soils Classification System, visit:

gis.teagasc.ie/soils/downloads/SIS_Final_Technical_Report...

 

Originally mapped as Fort Collins, the Forkwood soil series was first established in 1980 in Washakie County, in the north central part of the State, to more accurately reflect the climate and geomorphology of Wyoming. The series was most likely named after the Fork Wood River flowing through the Shoshone National Forest. The current type location is located in Niobrara County, Wyoming.

 

What makes the Forkwood state soil so important is what it is used for, and its prevalence in the State. Most of the Forkwood soils support semi-arid desert and grassland ecosystems. Common plant species consist of big sagebrush, western and bluebunch wheatgrass, bluegrass, and needleandthread. These lands are home to pronghorn antelope, mule deer, coyote, jackrabbits, cottontail rabbits, birds common to shrub steppes and much more. Much of Wyoming is rangeland. The grasses that grow on Forkwood are important for livestock grazing and wildlife habitat.

 

For more information about this and other State Soils, visit the Soil Science Society of America "Around the World-State Soils" website.

   

Photo: Susan Allen/ Stockton University

Plate 47: Typical soil profile and associated landscape for the Al Zafrah series (soil AD247).

 

Taxonomic classification: Typic Torripsamments, mixed, hyperthermic

 

The Al Zafrah series is a moderately deep to deep sandy soil overlying bedrock (typically calcareous sandstone). The soils are typically somewhat excessively or excessively drained. They occur on gentle slopes within gently undulating to undulating deflation plains, sand sheets and low dunes. They are formed from eolian sands that overlie sandstone.

 

These soils are used for rangeland grazing of camels though vegetation cover is frequently less than 5% and often absent. Vegetation species recorded are Haloxylon salicornicum, Cyperus conglomeratus and Zygophyllum spp. together with occasional Stipagrostis plumosa.

 

This soil is common in throughout the Ghayathi sub-area and has also been described from the Al Ain sub-area. Minor occurrences have been recorded from the As Sila and Madinat Zayed subareas.

 

The main feature of this soil is the limited depth to a bedrock layer. The soil above the hardpan layer is sandy. The limited depth to bedrock is the main issue affecting management for irrigated agriculture as limited depth of soil has implications for plant root development and irrigation management. The sandy nature of the soil, giving rise to low nutrient storage and moisture holding capacities, is also an issue. The soil surface may need to be protected to prevent erosion by wind. This soil is marginally suitable for irrigated agriculture.

Leptic Haplogypsids, sandy, mixed, hyperthermic, petrogypsic phase (Soil AD114) are deep to very deep, sandy soils with gypsum occurring at or near the soil surface and a petrogypsic layer occurring below 100cm. They are well drained or somewhat excessively drained and permeability is moderately rapid or rapid. These soils commonly occur on older sediments in deflation plains and at the higher margins of inland and coastal sabkha. They are formed in old sand and gravel deposits.

 

They are commonly used for low intensity camel grazing. They frequently have less than 5% vegetation cover comprising Haloxylon salicornicum and Zygophyllum spp.

 

These soils occur throughout the Emirate but most commonly in the north-eastern parts, north of the Abu Dhabi to Al Ain road and also at the western margins of Sabkha Matti.

 

Plate 12: Typical soil profile and associated landscape for Leptic Haplogypsids, sandy, mixed, hyperthermic, petrogypsic phase (Soil AD114).

1 2 ••• 75 77 78 79 80