Knoco soil series
A representative soil profile of the Knoco soil series. (Soil Survey of Woods County, Oklahoma; by Richard Gelnar, Jimmy Ford, Clay Salisbury, Clay Wilson, and Glen Williams, Natural Resources Conservation Service)
The Knoco series consists of very shallow and shallow, well drained, very slowly permeable soils that formed in residuum weathered from claystone over dense noncemented claystone bedrock of Permian age. These very gently sloping to very steep soils occur on interfluves, side slopes and erosional footslopes on dissected plains. Slopes range from 1 to 60 percent. Mean annual precipitation is about 686 mm (27 in) and the mean annual air temperature is about 17.2 degrees C (63 degrees F).
TAXONOMIC CLASS: Clayey, mixed, active, calcareous, thermic, shallow Aridic Ustorthents
Soil Moisture: Typic ustic soil moisture regime.
Depth to bedrock, densic: 8 to 51 cm (3 to 20 in)
Thickness of the ochric epipedon: 0 to 36 cm (0 to 14 in)
Depth to secondary carbonates: 0 to 41 cm (0 to 16 in)
Surface fragments: Calcareous nodules and sandstone pebbles range from a few to a pavement. There are a few siliceous pebbles on the surface of some pedons. Some pedons have sandstone or limestone stones or boulders on the surface. Fragments range from 1 to 20 feet across the long axis, and are about 1 to 5 feet thick. These fragments cover about 2 to 25 percent of the surface layer in some soil areas.
Particle-size control section (weighted average):
Clay Content: 35 to 60 percent
USE AND VEGETATION: Used mainly for rangeland. The native vegetation consists of a sparse cover of tobosagrass, buffalograss, blue grama and sideoats grama, with a few scrubby mesquite, juniper, and pricklypear cactus; about 10 to 50 percent ground cover in most areas.
DISTRIBUTION AND EXTENT: North central Texas, western Oklahoma, and a small part of south central Kansas; Land Resource Region - H; MLRA-78A (Rolling Limestone Prairie), MLRAs - 78B and 78C (Central Rolling Red Plains); The series is extensive.
For additional information about the survey area, visit:
www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/oklahoma/OK151...
For a detailed soil description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/K/KNOCO.html
For acreage and geographic distribution, visit:
Knoco soil series
A representative soil profile of the Knoco soil series. (Soil Survey of Woods County, Oklahoma; by Richard Gelnar, Jimmy Ford, Clay Salisbury, Clay Wilson, and Glen Williams, Natural Resources Conservation Service)
The Knoco series consists of very shallow and shallow, well drained, very slowly permeable soils that formed in residuum weathered from claystone over dense noncemented claystone bedrock of Permian age. These very gently sloping to very steep soils occur on interfluves, side slopes and erosional footslopes on dissected plains. Slopes range from 1 to 60 percent. Mean annual precipitation is about 686 mm (27 in) and the mean annual air temperature is about 17.2 degrees C (63 degrees F).
TAXONOMIC CLASS: Clayey, mixed, active, calcareous, thermic, shallow Aridic Ustorthents
Soil Moisture: Typic ustic soil moisture regime.
Depth to bedrock, densic: 8 to 51 cm (3 to 20 in)
Thickness of the ochric epipedon: 0 to 36 cm (0 to 14 in)
Depth to secondary carbonates: 0 to 41 cm (0 to 16 in)
Surface fragments: Calcareous nodules and sandstone pebbles range from a few to a pavement. There are a few siliceous pebbles on the surface of some pedons. Some pedons have sandstone or limestone stones or boulders on the surface. Fragments range from 1 to 20 feet across the long axis, and are about 1 to 5 feet thick. These fragments cover about 2 to 25 percent of the surface layer in some soil areas.
Particle-size control section (weighted average):
Clay Content: 35 to 60 percent
USE AND VEGETATION: Used mainly for rangeland. The native vegetation consists of a sparse cover of tobosagrass, buffalograss, blue grama and sideoats grama, with a few scrubby mesquite, juniper, and pricklypear cactus; about 10 to 50 percent ground cover in most areas.
DISTRIBUTION AND EXTENT: North central Texas, western Oklahoma, and a small part of south central Kansas; Land Resource Region - H; MLRA-78A (Rolling Limestone Prairie), MLRAs - 78B and 78C (Central Rolling Red Plains); The series is extensive.
For additional information about the survey area, visit:
www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/oklahoma/OK151...
For a detailed soil description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/K/KNOCO.html
For acreage and geographic distribution, visit: