Ard soil series

The Ard series consists of moderately deep, well drained soils that formed in rhyolite residuum with loess influence. Ard soils are on mountain slopes and loess hills and have slopes of 4 to 12 percent.

 

TAXONOMIC CLASS: Coarse-loamy, mixed, superactive Calcic Haplocryolls

 

Mollic epipedon thickness: 25 to 40 cm

Depth to bedrock: 50 to 100 cm

Depth to the calcic horizon (2Bk horizon): 25 to 40 cm

Particle size control section rock fragments: 0 to 35 percent

Particle size control section total clay: 7 to 18 percent

Reaction: neutral to strongly alkaline

Soil moisture regime: xeric, dry for 45to 60 consecutive days

Mean annual soil temperature: 3.9 to 7.2 degrees C. (cryic soil temperature regime)

Mean summer soil temperature: 10.0 to 15.0 degrees C.

 

USE AND VEGETATION:

Major uses: Non-irrigated winter and spring wheat, barley, and rangeland

Dominant native vegetation: mountain big sagebrush, Idaho fescue, bluebunch wheatgrass, tapertip hawksbeard

 

DISTRIBUTION AND EXTENT:

Distribution: Southeastern Idaho, MLRA 13

Extent: the series is not extensive

 

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/A/ARD.html

 

For acreage and geographic distribution, visit:

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

 

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