LOCATION REDONA NM+TXEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, thermic Ustic Calciargids
TYPICAL PEDON: Redona fine sandy loam, on northeast facing, side slope, 2 percent slope in rangeland at an elevation of about 1,170 m (3,850 ft). (Colors are for dry soil unless otherwise stated.)
A--0 to 25 cm (0 to 10 in); reddish brown (5YR 4/4) fine sandy loam, dark reddish brown (5YR 3/4) moist; weak thin platy structure in the upper 5 cm parting to weak fine subangular blocky; slightly hard, friable, slightly sticky and nonplastic; many very fine and fine roots; common very fine and fine pores; noneffervescent; slightly alkaline; clear smooth boundary. (10 to 30 cm thick)
Bt1--25 to 61 cm (10 to 24 in); reddish brown (5YR 5/4) sandy clay loam, reddish brown (5YR 4/4) moist; weak coarse prismatic structure parting to moderate medium subangular blocky; hard, friable, slightly sticky, and nonplastic; many very fine and fine roots; many very fine and fine tubular pores; common clusters of fine rounded insect casts; many distinct clay coatings on sand grains and as bridges between the grains; noneffervescent; slightly alkaline; clear smooth boundary. (23 to 51 cm thick)
Bt2--61 to 71 cm (24 to 28 in); reddish brown (5YR 5/4) sandy clay loam, reddish brown (5YR 4/4) moist; moderate fine and medium subangular blocky structure; hard, friable, slightly sticky and nonplastic; common very fine and fine roots; many very fine and fine pores; common clusters of fine rounded insect casts; many distinct clay coatings on sand grains and as bridges between the grains; strongly effervescent; few fine calcium carbonate masses; slightly alkaline; abrupt wavy boundary. (0 to 38 cm thick)
Bk1---71 to 127 cm (28 to 50 in); pink (5YR 8/3) and light reddish brown (5YR 6/4) clay loam, pink (5YR 7/3) and reddish brown (5YR 5/4) moist; moderate medium subangular blocky structure; very hard, friable, slightly sticky and plastic; few very fine roots; common very fine and fine pores; few very fine and fine pebbles; violently effervescent; few very fine calcium carbonate masses and nodules; strongly alkaline; clear wavy boundary. (38 to 64 cm thick)
Bk2--127 to 200 cm (50 to 80 in); light reddish brown (5YR 6/4) and pink (5YR 8/3) clay loam, reddish brown (5YR 5/4) and pink (5YR 7/3) moist; weak medium subangular blocky structure; hard, friable, slightly sticky and plastic; few very fine roots; common very fine and fine pores; violently effervescent; few fine calcium carbonate masses and nodules; moderately alkaline.
TYPE LOCATION: Quay County, New Mexico; about 4 miles south of Tucumcari on New Mexico Highway 18, 0.25 mile east on fence line, then 0.5 mile north of southwest corner, or sec. 15, T. 10 N., R. 30 E. in rangeland; Bulldog Mesa, New Mexico USGS quad; Latitude: 35 degrees, 08 minutes, 12 seconds N,; Longitude: 103 degrees, 44 minutes, 31 seconds W, NAD 1968.
RANGE IN CHARACTERISTICS:
Soil Moisture: An aridic moisture regime bordering on ustic. The soil moisture control section is dry in all parts for 205 days to 270 days, cumulative, in normal years. The soil is intermittently moist in some part of the soil moisture control section May through October. The soil is driest November through April. July and August are the months when the soil is moist for the longest periods.
Mean annual soil temperature: 15 to 21 degrees C (60 to 72 Degrees F).
Depth to calcic horizon: 50 to 100 cm (20 to 40 in).
Solum thickness: more than 200 cm.
Particle-size control section: 18 to 35 percent silicate clay
A horizon:
Hue: 5YR or 7.5YR
Value: 4 or 5, 3 or 4 moist
Chroma: 2 to 5
Texture: loamy fine sand, fine sandy loam, sandy loam, loam, sandy clay loam
Effervescence: none
Reaction: slightly alkaline
Bt horizon:
Hue: 2.5YR to 7.5YR
Value: 3 to 6, 2 to 5 moist
Chroma: 3 to 6
Texture: loam, sandy clay loam, clay loam
Rock fragments: less than 15 percent
Effervescence: none
Reaction: slightly alkaline
Btk horizon (where present):
Hue: 2.5YR to 7.5YR
Value: 3 to 6, 2 to 5 moist
Chroma: 2 to 6
Texture: loam, sandy clay loam, clay loam
Calcium carbonate equivalent: 15 to 25 percent
Rock fragments: less than 15 percent
Effervescence: strong to violent
Reaction: slightly alkaline or moderately alkaline
Bk horizon:
Hue: 2.5YR to 7.5YR
Value: 4 to 8, 3 to 8 moist
Chroma: 2 to 6
Texture: loam, sandy clay loam, clay loam
Calcium carbonate equivalent: 15 to 35 percent
Rock fragments: less than 15 percent
Effervescence: violent
Reaction: moderately alkaline or strongly alkaline
COMPETING SERIES: These are the Amarose (NM), Grizzle (AZ), Gulch (AZ), Headquarters (NM), McAllister (AZ), McNeal (AZ), and Tinney (NM) series.
Amarose soils: have an argillic horizon that extends to 200 cm or more.
Headquarters soils: have a calcic horizon at 25 to 50 cm.
McAllister,
McNeal,
Grizzle, and
Gulch soils: are intermittently moist in the soil moisture control section between July to September and December to February. These soils also support a distinctively different vegetative community characteristic of the Sonoran Desert environment.
Tinney soils: are calcareous to the surface.
GEOGRAPHIC SETTING:
Parent material: formed in moderately fine textured calcareous alluvium derived from red siltstone, shale and sandstone from the Triassic period.
Landform: on slightly convex alluvial fans, terraces, and valley slopes.
Slope: 0 to 5 percent.
Mean annual temperature: 15 to 21 degrees C (58 to 70 degrees F).
Mean annual precipitation: 305 to 406 mm (12 to 16 in).
Frost-free period: 180 to 220 days.
Elevation: 1,100 to 1,620 meters (3,600 to 5,300 ft).
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Ima,
La Lande,
Montoya, and
Tucumcari series.
Ima and La Lande series: do not have an argillic or calcic horizon.
Montoya and Tucumcari series: are fine textured in the particle-size control section.
DRAINAGE AND PERMEABILITY: Well drained. Moderate permeability. Runoff is negligible on 0 to 1 percent slopes, very low on 1 to 3 percent slopes, and low on 3 to 5 percent slopes.
USE AND VEGETATION: Used primarily for livestock grazing and irrigated crop production. Irrigated crops are alfalfa, cotton, feed grains, and broom corn. Native vegetation is principally blue grama, sideoats grama, buffalograss, tobosa, yucca, mesquite, and cholla cactus. This series has been correlated to the Sandy Plains (R070XB055NM), Sandy Loam (R070XB054NM) and Loamy (R070XB052NM) range sites in MLRA-70.
DISTRIBUTION AND EXTENT: Upper Pecos River Valley (MLRA 70B in LRR G) of east-central New Mexico and western Texas). The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Quay County (Tucumcari Area), New Mexico, 1969.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: 0 to 25 cm. (A horizon)
Argillic horizon: 25 to 71 cm. (Bt horizon)
Calcic horizon: 71 to 200 cm. (Bk horizon)
Additional comments: Where the upper horizon meets the color requirements of a mollic epipedon, it is either too thin or does not have sufficient organic carbon.
ADDITIONAL DATA: NSSL data from Quay County, NM (S91NM-037-010, S91NM-037-006, S91NM-037-005), Guadalupe County, NM (S91NM-019-002), and San Miguel County, NM (S91NM-047-002).
TAXONOMIC VERSION: Keys to Soil Taxonomy, Tenth Edition, 2006.