Cochina soil series
A profile of Cochina clay, 0 to 1 percent slopes, occasionally flooded, McMullen County, Texas.
Cochina soils formed in calcareous clayey alluvium and are clayey throughout. The Cochina series consists of very deep, moderately well drained, very slowly permeable soils on flood plains. Slope ranges from 0 to 1 percent. Mean annual precipitation is about 56 cm (22 in) and the mean annual air temperature is about 22 degrees C (72 degrees F).
TAXONOMIC CLASS: Very-fine, smectitic, hyperthermic Sodic Haplusterts
Soil Moisture: An aridic ustic moisture regime. The soil moisture control section is moist in some or all parts for less than 90 consecutive days in normal years.
Mean annual soil temperature: 22.2 to 24.4 degrees C (72 to 76 degrees F)
Solum thickness: 152 to 203 cm (60 to 80 in
Depth to sodic features: 41 to 102 cm (16 to 40 in)
Vertic Features: Cracks that are 1 cm (0.4 in) to 8 cm (3 in) wide and extend to a depth of 0 to 50 cm (20 in) or more.
USE AND VEGETATION: Used as rangeland. Native vegetation is dominated by large mesquite; oak and elm may make up a large percent of the overstory along stream banks. Bristlegrass, Virginia wildrye, and fourflower trichloris dominate the potential herbaceous community. Mesquite, sedges, and spiny aster are persistent increasers. Retama and sneezeweed are persistent invaders.
DISTRIBUTION AND EXTENT: Western Rio Grande Plain, Texas; LRR I, MLRA 83B; large extent. These soils were formerly included as a phase of the Mercedes series.
For a detailed description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/C/COCHINA.html
For acreage and geographic distribution, visit:
Cochina soil series
A profile of Cochina clay, 0 to 1 percent slopes, occasionally flooded, McMullen County, Texas.
Cochina soils formed in calcareous clayey alluvium and are clayey throughout. The Cochina series consists of very deep, moderately well drained, very slowly permeable soils on flood plains. Slope ranges from 0 to 1 percent. Mean annual precipitation is about 56 cm (22 in) and the mean annual air temperature is about 22 degrees C (72 degrees F).
TAXONOMIC CLASS: Very-fine, smectitic, hyperthermic Sodic Haplusterts
Soil Moisture: An aridic ustic moisture regime. The soil moisture control section is moist in some or all parts for less than 90 consecutive days in normal years.
Mean annual soil temperature: 22.2 to 24.4 degrees C (72 to 76 degrees F)
Solum thickness: 152 to 203 cm (60 to 80 in
Depth to sodic features: 41 to 102 cm (16 to 40 in)
Vertic Features: Cracks that are 1 cm (0.4 in) to 8 cm (3 in) wide and extend to a depth of 0 to 50 cm (20 in) or more.
USE AND VEGETATION: Used as rangeland. Native vegetation is dominated by large mesquite; oak and elm may make up a large percent of the overstory along stream banks. Bristlegrass, Virginia wildrye, and fourflower trichloris dominate the potential herbaceous community. Mesquite, sedges, and spiny aster are persistent increasers. Retama and sneezeweed are persistent invaders.
DISTRIBUTION AND EXTENT: Western Rio Grande Plain, Texas; LRR I, MLRA 83B; large extent. These soils were formerly included as a phase of the Mercedes series.
For a detailed description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/C/COCHINA.html
For acreage and geographic distribution, visit: