Chacon soil series
Profile of Chacon sandy clay loam, 0 to 2 percent slopes. The clayey argillic horizon, also known as a Bt horizon, begins at a depth of about 27 centimeters). Chacon soils have loamy surfaces over a clayey subsoil. (Soil Survey of McMullen County, Texas; by Clark K. Harshbarger, Jon Wiedenfeld, and Gary Harris, Natural Resources Conservation Service)
The Chacon series consists of very deep, well drained, slowly permeable soils that formed in calcareous clays and loamy alluvium over residuum weathered from sandstone and claystone. These nearly level to gently sloping soils occur on terraces and broad smooth plains. Slopes range from 0 to 5 percent. Mean annual temperature is about 22 degrees C (72 degrees F) and mean annual precipitation is about 533 mm (21 in).
TAXONOMIC CLASS: Fine, smectitic, hyperthermic Torrertic Argiustolls
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. June to August and December to February are the driest months, while September to November and March to May are the wettest months.
Solum thickness: 102 to 203 cm (40 to 80 in) over calcareous clays stratified with weakly consolidated sandstone and shale.
Mean annual soil temperature: 21 to 23 degrees C (70 to 73 degrees F)
Mollic epipedon: 25 to 76 cm (10 to 30 in) thick.
Depth to argillic: 15 to 42 cm (6 to 17 in)
Depth to secondary carbonates: 45 to 102 (17 to 40 in)
Particle-size control section
Clay content: 35 to 50 percent
Coarse fragments: 0 to 5 percent
Vertic properties: COLE is 0.07 to 0.15 in the upper 1.25 meters. The soil cracks 0.4 to 1.0 inch wide at the surface when dry, and the cracks extend to a depth of 51 cm (20 in) or more.
USE AND VEGETATION: Mostly rangeland. Small areas are cultivated to such crops as small grain, grain sorghum, and introduced grasses. A few areas are irrigated for producing cotton, corn, grain sorghum, small grain, truck crops, and introduced grasses. The original plant community was open grassland dominated by mid-grasses with occasional mesquite trees and woody shrubs. Bundleflower, bush sunflower and orange zexmania are important forbs. In early stages of retrogression, such plants are pink pappusgrass and plains bristlegrass increase but decrease with further deterioration. Other plants which increase or invade are hooded windmillgrass, Hall's panicum, tobosa grass, curley mesquitegrass, threeawns, red grama, mesquite, whitebrush, blackbrush, condalias, wolfberry, spiny hackberry, guyacan, guajillo, twisted acacia, Texas persimmon, and prickly pear cactus.
DISTRIBUTION AND EXTENT: Western Rio Grande Plain, Texas; LRR I; MLRA 83B. The series is of moderate extent. These soils were formerly included in the Dant series.
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/CHACON.html
For acreage and geographic distribution, visit:
casoilresource.lawr.ucdavis.edu/see/#chacon
Chacon soil series
Profile of Chacon sandy clay loam, 0 to 2 percent slopes. The clayey argillic horizon, also known as a Bt horizon, begins at a depth of about 27 centimeters). Chacon soils have loamy surfaces over a clayey subsoil. (Soil Survey of McMullen County, Texas; by Clark K. Harshbarger, Jon Wiedenfeld, and Gary Harris, Natural Resources Conservation Service)
The Chacon series consists of very deep, well drained, slowly permeable soils that formed in calcareous clays and loamy alluvium over residuum weathered from sandstone and claystone. These nearly level to gently sloping soils occur on terraces and broad smooth plains. Slopes range from 0 to 5 percent. Mean annual temperature is about 22 degrees C (72 degrees F) and mean annual precipitation is about 533 mm (21 in).
TAXONOMIC CLASS: Fine, smectitic, hyperthermic Torrertic Argiustolls
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. June to August and December to February are the driest months, while September to November and March to May are the wettest months.
Solum thickness: 102 to 203 cm (40 to 80 in) over calcareous clays stratified with weakly consolidated sandstone and shale.
Mean annual soil temperature: 21 to 23 degrees C (70 to 73 degrees F)
Mollic epipedon: 25 to 76 cm (10 to 30 in) thick.
Depth to argillic: 15 to 42 cm (6 to 17 in)
Depth to secondary carbonates: 45 to 102 (17 to 40 in)
Particle-size control section
Clay content: 35 to 50 percent
Coarse fragments: 0 to 5 percent
Vertic properties: COLE is 0.07 to 0.15 in the upper 1.25 meters. The soil cracks 0.4 to 1.0 inch wide at the surface when dry, and the cracks extend to a depth of 51 cm (20 in) or more.
USE AND VEGETATION: Mostly rangeland. Small areas are cultivated to such crops as small grain, grain sorghum, and introduced grasses. A few areas are irrigated for producing cotton, corn, grain sorghum, small grain, truck crops, and introduced grasses. The original plant community was open grassland dominated by mid-grasses with occasional mesquite trees and woody shrubs. Bundleflower, bush sunflower and orange zexmania are important forbs. In early stages of retrogression, such plants are pink pappusgrass and plains bristlegrass increase but decrease with further deterioration. Other plants which increase or invade are hooded windmillgrass, Hall's panicum, tobosa grass, curley mesquitegrass, threeawns, red grama, mesquite, whitebrush, blackbrush, condalias, wolfberry, spiny hackberry, guyacan, guajillo, twisted acacia, Texas persimmon, and prickly pear cactus.
DISTRIBUTION AND EXTENT: Western Rio Grande Plain, Texas; LRR I; MLRA 83B. The series is of moderate extent. These soils were formerly included in the Dant series.
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/CHACON.html
For acreage and geographic distribution, visit:
casoilresource.lawr.ucdavis.edu/see/#chacon