LOCATION REDMOND OREstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Vitritorrandic Haploxerolls
TYPICAL PEDON: Redmond ashy sandy loam, rangeland. (Colors are for dry soil unless otherwise noted.)
A1--0 to 5 inches; grayish brown (10YR 5/2) ashy sandy loam, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; soft, friable, slightly sticky and slightly plastic; many very fine roots; many very fine irregular pores; neutral; clear smooth boundary. (3 to 7 inches thick)
A2--5 to 13 inches; grayish brown (10YR 5/2) ashy sandy loam, very dark grayish brown (10YR 3/2) moist; weak coarse prismatic structure parting to weak fine granular; slightly hard, friable, slightly sticky and slightly plastic; common very fine roots; many fine tubular pores; neutral; clear smooth boundary. (4 to 7 inches thick)
2Bw1--13 to 19 inches; brown (10YR 5/3) loam, dark brown (10YR 3/3) moist; weak coarse subangular blocky structure; soft, friable, slightly sticky and slightly plastic; common very fine roots; common very fine tubular pores; neutral; clear smooth boundary. (5 to 10 inches thick)
2Bw2--19 to 25 inches; brown (10YR 5/3) loam, dark brown (10YR 3/3) moist; weak medium and coarse subangular blocky structure; slightly hard, friable, sticky and slightly plastic; common very fine roots; many very fine tubular pores; slightly alkaline; clear smooth boundary. (4 to 10 inches thick)
2Bw3--25 to 31 inches; pale brown (10YR 6/3) loam, dark brown (10YR 4/3) moist; weak medium platy structure; hard, firm, slightly sticky and slightly plastic; common very fine roots; many very fine and few fine tubular pores; slightly alkaline; clear smooth boundary. (0 to 6 inches thick)
2Bk--31 to 33 inches; light brownish gray (10YR 6/2) loam, dark grayish brown (10YR 4/2) moist; massive; hard, firm, slightly sticky and slightly plastic; common very fine roots; many very fine tubular pores; strongly effervescent; mycelial lime; moderately alkaline; abrupt wavy boundary. (0 to 4 inches thick)
3R--33 inches; basalt.
TYPE LOCATION: Crook County, Oregon; NW1/4 NW1/4 SE1/4 section 10, T. 15 S., R. 14 E.
RANGE IN CHARACTERISTICS: The mean annual soil temperature ranges from 48 to 52 degrees F. The soils are usually dry, and are dry in all parts of the soil moisture control section for 120 to 150 days commulative. Thickness of the solum and depth to bedrock is 20 to 40 inches. Hue is 10YR or 2.5Y. Reaction of the profile is neutral to moderately alkaline. Mycelial lime is lacking in some pedons. The mollic epipedon is 7 to 14 inches thick. Base saturation is 80 to 100 percent.
The A horizon has chroma of 2 or 3 moist and dry. It has a phosphate retention of 15 to 25 percent, 10 to 30 percent glass and glass-coated aggregate, and acid oxalate extractable aluminum plus one-half the acid oxalate iron is 0.4 to 0.8 percent.
The 2B horizon has value of 5 or 6 dry, 3 or 4 moist and chroma of 2 or 3 moist and dry. It is loam, clay loam, or cobbly loam and has 18 to 30 percent clay. It has 0 to 10 percent cobbles and 0 to 10 percent gravel. It is neutral to moderately alkaline.
COMPETING SERIES: This is the Buckbert series. The Buckbert series is very deep.
GEOGRAPHIC SETTING: The Redmond soils are on lava plains at elevations of 2,000 to 4,000 feet. Slopes are 0 to 15 percent. These soils formed in ash and over material weathered from basalt, rhyolite, andesite and sandstone. The climate is semiarid with cool winters and warm dry summers with a mean annual precipitation of 8 to 12 inches. The mean annual temperature is 47 to 52 degrees F., mean winter temperature is 32 to 34 degrees F., and the mean summer temperature is 61 to 63 degrees F. The frost-free period is 70 to 130 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Deschutes and Swartz soils. Deschutes soils are coarse-loamy. Swartz soils have argillic horizons with 40 to 65 percent clay.
DRAINAGE AND PERMEABILITY: Well drained; moderate permeability.
USE AND VEGETATION: Irrigated crops, small grains, hay, pasture and wildlife habitat. Native vegetation is Idaho fescue, bluebunch wheatgrass, antelope bitterbrush, mountain big sagebrush, and western juniper.
DISTRIBUTION AND EXTENT: Central Oregon; MLRA 10, pumice zone. This series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Deschutes County, 1946.
REMARKS: Diagnostic horizons and other features:
-Mollic epipedon- the zone from 0 to 13 inches (A1 and A2 horizons)
-Cambic horizon- the zone from 13 to 33 inches. The organic matter content is less than 1 percent below 13 inches.
-Vitritorrandic- the upper 13 inches has over 10 percent glass and the acid oxalate extractable aluminum plus one-half the acid oxalate iron over 0.4 percent.