Grava soil series
A representative soil profile of the Grava series. (Soil Survey of Duval County, Texas; by John L. Sackett III, Natural Resources Conservation Service)
The Grava series consists of soils that are moderately deep to a petrocalcic. They are well drained, moderately slowly permeable soils that formed in residuum derived from deposits of the Uvalde Gravel over the Goliad Formation. These nearly level to strongly sloping soils are on uplands. Slope ranges from 0 to 8 percent. Mean annual air temperature is about 22 degrees C (73 degrees F), and annual precipitation is about 610 mm (24 in).
TAXONOMIC CLASS: Clayey-skeletal, smectitic, hyperthermic Petrocalcic Paleustolls
Soil Moisture: The soil moisture control section (SMCS) remains moist in some or all parts for less than 90 consecutive days per year during the months of July through August and March through May. The SMCS is driest during the months June through September and December through February. Aridic/ustic moisture regime.
Mean annual soil temperature: 21 to 24 degrees C (72 to 75 degrees F)
Depth to argillic horizon: 10 to 20 cm (4 to 8 in)
Depth to petrocalcic horizon: 51 to 102 cm (20 to 40 in)
Clay content of the particle-size control section: 40 to 60 percent
Coarse Fragments: 35 to 80 percent, and increase with increasing depth
USE AND VEGETATION: Used mainly for livestock grazing and wildlife habitat. Native woody vegetation includes black brush, mountain laurel, mesquite, hog plum, cenezo, guayacan, prickly pear, coyotillo, amagosa and catclaw. Grass species include sideoats grama, buffalograss, perennial threeawn, Arizona cottontop, plains bristlegrass, and hooded windmillgrass. The ecological site is Gravelly Ridge, PE 19-44 (R083CY454TX).
DISTRIBUTION AND EXTENT: Central Rio Grande Plain of Texas; LRR I; MLRA 83C; minor extent.
For additional information about the survey area, visit:
www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/texas/TX131/Du...
For a detailed soil description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/G/GRAVA.html
For acreage and geographic distribution, visit:
casoilresource.lawr.ucdavis.edu/see/#grava
Grava soil series
A representative soil profile of the Grava series. (Soil Survey of Duval County, Texas; by John L. Sackett III, Natural Resources Conservation Service)
The Grava series consists of soils that are moderately deep to a petrocalcic. They are well drained, moderately slowly permeable soils that formed in residuum derived from deposits of the Uvalde Gravel over the Goliad Formation. These nearly level to strongly sloping soils are on uplands. Slope ranges from 0 to 8 percent. Mean annual air temperature is about 22 degrees C (73 degrees F), and annual precipitation is about 610 mm (24 in).
TAXONOMIC CLASS: Clayey-skeletal, smectitic, hyperthermic Petrocalcic Paleustolls
Soil Moisture: The soil moisture control section (SMCS) remains moist in some or all parts for less than 90 consecutive days per year during the months of July through August and March through May. The SMCS is driest during the months June through September and December through February. Aridic/ustic moisture regime.
Mean annual soil temperature: 21 to 24 degrees C (72 to 75 degrees F)
Depth to argillic horizon: 10 to 20 cm (4 to 8 in)
Depth to petrocalcic horizon: 51 to 102 cm (20 to 40 in)
Clay content of the particle-size control section: 40 to 60 percent
Coarse Fragments: 35 to 80 percent, and increase with increasing depth
USE AND VEGETATION: Used mainly for livestock grazing and wildlife habitat. Native woody vegetation includes black brush, mountain laurel, mesquite, hog plum, cenezo, guayacan, prickly pear, coyotillo, amagosa and catclaw. Grass species include sideoats grama, buffalograss, perennial threeawn, Arizona cottontop, plains bristlegrass, and hooded windmillgrass. The ecological site is Gravelly Ridge, PE 19-44 (R083CY454TX).
DISTRIBUTION AND EXTENT: Central Rio Grande Plain of Texas; LRR I; MLRA 83C; minor extent.
For additional information about the survey area, visit:
www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/texas/TX131/Du...
For a detailed soil description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/G/GRAVA.html
For acreage and geographic distribution, visit:
casoilresource.lawr.ucdavis.edu/see/#grava