Rio Diablo soil series
A representative soil profile of Rio Diablo silty clay, 0 to 2 percent slopes, rarely flooded. (Soil Survey of Edwards and Real Counties, Texas; by Wayne J. Gabriel, Dr. Lynn E. Loomis, and James A. Douglass II Natural Resources Conservation Service)
The Rio Diablo series consists of very deep, well drained, moderately slowly permeable soils that formed in calcareous alluvium from limestone hills. The soils are in valleys and on stream terraces and have slopes ranging from 0 to 3 percent.
TAXONOMIC CLASS: Fine, mixed, superactive, thermic Aridic Haplustolls
Solum thickness ranges from 60 to more than 80 inches. Depth to limestone or gravel ranges from 6 to 20 feet. Limestone fragments of pebble size range from 0 to 15 percent by volume. COLE ranges from 0.03 to 0.05. Clay content of the 10 to 40 inch control section ranges from 40 to 55 percent and silicate clay ranges from 35 to 45 percent. Calcium carbonate equivalent of the 10 to 40 inch control section ranges from 20 to 40 percent with 0 to 5 percent in visible secondary forms.
Most of the areas of Rio Diablo soils are used as range. In good and excellent range condition it is dominated by sideoats grama, cane bluestem, Arizona cottontop, plains bristlegrass, Canada wildrye, and Texas wintergrass. As retrogression occurs, perennial threeawn, slim tridens, tobosa, buffalograss and curly mesquite increase along with woody shrubs. As deterioration continues, a large percent of the plants consists of woody shrubs such as mesquite, juniper, agarito, tasajillo, and other cacti with an understory of red grama, hairy tridens, perennial threeawn, and scattered areas of tobosa. Some areas of these soils are irrigated for the production of improved pasture grasses.
DISTRIBUTION AND EXTENT: The Western Edwards Plateau of Texas. The series is of moderate extent. The soils were formerly included in the Knippa series.
For additional information about the survey area, visit:
www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/texas/TX607/0/...
For a detailed soil description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/R/RIO_DIABLO.html
For acreage and geographic distribution, visit:
casoilresource.lawr.ucdavis.edu/see/#rio%20diablo
Rio Diablo soil series
A representative soil profile of Rio Diablo silty clay, 0 to 2 percent slopes, rarely flooded. (Soil Survey of Edwards and Real Counties, Texas; by Wayne J. Gabriel, Dr. Lynn E. Loomis, and James A. Douglass II Natural Resources Conservation Service)
The Rio Diablo series consists of very deep, well drained, moderately slowly permeable soils that formed in calcareous alluvium from limestone hills. The soils are in valleys and on stream terraces and have slopes ranging from 0 to 3 percent.
TAXONOMIC CLASS: Fine, mixed, superactive, thermic Aridic Haplustolls
Solum thickness ranges from 60 to more than 80 inches. Depth to limestone or gravel ranges from 6 to 20 feet. Limestone fragments of pebble size range from 0 to 15 percent by volume. COLE ranges from 0.03 to 0.05. Clay content of the 10 to 40 inch control section ranges from 40 to 55 percent and silicate clay ranges from 35 to 45 percent. Calcium carbonate equivalent of the 10 to 40 inch control section ranges from 20 to 40 percent with 0 to 5 percent in visible secondary forms.
Most of the areas of Rio Diablo soils are used as range. In good and excellent range condition it is dominated by sideoats grama, cane bluestem, Arizona cottontop, plains bristlegrass, Canada wildrye, and Texas wintergrass. As retrogression occurs, perennial threeawn, slim tridens, tobosa, buffalograss and curly mesquite increase along with woody shrubs. As deterioration continues, a large percent of the plants consists of woody shrubs such as mesquite, juniper, agarito, tasajillo, and other cacti with an understory of red grama, hairy tridens, perennial threeawn, and scattered areas of tobosa. Some areas of these soils are irrigated for the production of improved pasture grasses.
DISTRIBUTION AND EXTENT: The Western Edwards Plateau of Texas. The series is of moderate extent. The soils were formerly included in the Knippa series.
For additional information about the survey area, visit:
www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/texas/TX607/0/...
For a detailed soil description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/R/RIO_DIABLO.html
For acreage and geographic distribution, visit:
casoilresource.lawr.ucdavis.edu/see/#rio%20diablo