Cochina soil and landscape
Profile of Cochina clay, 0 to 1 percent slopes, occasionally flooded. Cochina soils formed in calcareous clayey alluvium. These soils are clayey throughout and classified as Vertisols.
The landscape is a bedded area of Cochina clay, 0 to 1 percent slopes, occasionally flooded. Seed beds are prepared in case enough moisture is received to plant. This map unit is in Capability Class 3w. (Soil Survey of McMullen County, Texas; by Clark K. Harshbarger, Jon Wiedenfeld, and Gary Harris, Natural Resources Conservation Service)
Setting
Major land resource area: MLRA 83B—Western Rio Grande Plain
Elevation: 140 to 405 feet
Mean annual precipitation: 22 to 26 inches
Mean annual air temperature: 70 to 72 degrees F
Frost-free period: 265 to 301 days
Composition
Major components:
Cochina frequently flooded and similar soils: 90 percent
Minor components: 10 percent
Soil Description
Cochina soils, frequently flooded
Landscape: River valleys
Landforms: Flood plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous clayey alluvium
Typical Profile
A—0 to 4 inches; moderately alkaline clay
Bnss—4 to 33 inches; moderately alkaline clay
Bnssz—33 to 80 inches; moderately alkaline clay
Properties and Qualities
Slope: 0 to 1 percent
Depth to first restrictive layer: No restrictive layer
Slowest soil permeability to 60 inches, above first cemented restrictive layer: 0.001 to
0.06 in/hr (very slow)
Salinity, representative within 40 inches: Saline
Salinity, maximum within 40 inches: Saline
Sodicity, representative within 40 inches: Sodic
Sodicity, maximum within 40 inches: Sodic
Representative total available water capacity to 60 inches: About 6.6 inches (moderate)
Natural drainage class: Moderately well drained
Runoff: Medium
Flooding frequency: Frequent
Interpretive Groups
Land capability nonirrigated: 4w
Land capability irrigated: 4w
Ecological site name: Clayey Bottomland 18-35" PZ
Ecological site number: R083BY414TX
Typical vegetation: Buffalograss, false Rhodes grass, other perennial grasses, pinhole bluestem, white tridens, other trees, alkali sacaton, other perennial forbs, pink pappusgrass, plains bristlegrass, sedge, southwestern bristlegrass, vine mesquite, Virginia wildrye, other shrubs.
Use and Management
Major land uses: The major land uses for this soil are livestock grazing, forage production, and wildlife habitat. Some areas are planted in food plots to supplement wildlife. Wildlife habitat: This soil is well suited to wildlife habitat. Deer, dove, javelina, and quail are common in areas of this soil.
For additional information about the survey area, visit:
www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/texas/mcmullen...
For a detailed soil description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/C/COCHINA.html
For acreage and geographic distribution, visit:
casoilresource.lawr.ucdavis.edu/see/#cochina
Cochina soil and landscape
Profile of Cochina clay, 0 to 1 percent slopes, occasionally flooded. Cochina soils formed in calcareous clayey alluvium. These soils are clayey throughout and classified as Vertisols.
The landscape is a bedded area of Cochina clay, 0 to 1 percent slopes, occasionally flooded. Seed beds are prepared in case enough moisture is received to plant. This map unit is in Capability Class 3w. (Soil Survey of McMullen County, Texas; by Clark K. Harshbarger, Jon Wiedenfeld, and Gary Harris, Natural Resources Conservation Service)
Setting
Major land resource area: MLRA 83B—Western Rio Grande Plain
Elevation: 140 to 405 feet
Mean annual precipitation: 22 to 26 inches
Mean annual air temperature: 70 to 72 degrees F
Frost-free period: 265 to 301 days
Composition
Major components:
Cochina frequently flooded and similar soils: 90 percent
Minor components: 10 percent
Soil Description
Cochina soils, frequently flooded
Landscape: River valleys
Landforms: Flood plains
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Calcareous clayey alluvium
Typical Profile
A—0 to 4 inches; moderately alkaline clay
Bnss—4 to 33 inches; moderately alkaline clay
Bnssz—33 to 80 inches; moderately alkaline clay
Properties and Qualities
Slope: 0 to 1 percent
Depth to first restrictive layer: No restrictive layer
Slowest soil permeability to 60 inches, above first cemented restrictive layer: 0.001 to
0.06 in/hr (very slow)
Salinity, representative within 40 inches: Saline
Salinity, maximum within 40 inches: Saline
Sodicity, representative within 40 inches: Sodic
Sodicity, maximum within 40 inches: Sodic
Representative total available water capacity to 60 inches: About 6.6 inches (moderate)
Natural drainage class: Moderately well drained
Runoff: Medium
Flooding frequency: Frequent
Interpretive Groups
Land capability nonirrigated: 4w
Land capability irrigated: 4w
Ecological site name: Clayey Bottomland 18-35" PZ
Ecological site number: R083BY414TX
Typical vegetation: Buffalograss, false Rhodes grass, other perennial grasses, pinhole bluestem, white tridens, other trees, alkali sacaton, other perennial forbs, pink pappusgrass, plains bristlegrass, sedge, southwestern bristlegrass, vine mesquite, Virginia wildrye, other shrubs.
Use and Management
Major land uses: The major land uses for this soil are livestock grazing, forage production, and wildlife habitat. Some areas are planted in food plots to supplement wildlife. Wildlife habitat: This soil is well suited to wildlife habitat. Deer, dove, javelina, and quail are common in areas of this soil.
For additional information about the survey area, visit:
www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/texas/mcmullen...
For a detailed soil description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/C/COCHINA.html
For acreage and geographic distribution, visit:
casoilresource.lawr.ucdavis.edu/see/#cochina