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Straw soil series

A representative soil profile of the Straw soil series in North Dakota.

 

The Straw series consists of very deep, moderately well and well drained soils that formed in alluvium. These soils are on floodplains, stream terraces and drainageways. Slopes are 0 to 8 percent. Mean annual precipitation is about 16 inches, and mean annual air temperature is about 43 degrees F.

 

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Cumulic Haplustolls

 

Soil temperature - 41 to 47 degrees F.

Moisture control section - between 4 and 12 inches; not dry in all parts for 60 or more consecutive days following July 1.

Mollic epipedon thickness - 16 to 40 inches.

Depth to Bk horizon - 13 to 30 inches.

The soil may be noncalcareous to a depth of 25 inches.

Some pedons have Bw or Ab horizons.

 

USE AND VEGETATION: Straw soils are used mainly for dryland cropland, irrigated cropland, and range. Potential native vegetation is mainly rough fescue, western wheatgrass, needleandthread, little bluestem, bluebunch wheatgrass, green needlegrass, forbs, and shrubs.

 

DISTRIBUTION AND EXTENT: Straw soils are of moderate extent in eastern Montana and possibly in Wyoming and North Dakota.

 

For additional information about the survey area, visit:

www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/north_dakota/N...

 

For a detailed soil description, visit:

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

 

For acreage and geographic distribution, visit:

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

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Uploaded on February 17, 2011
Taken in January 2005