LOCATION BARRON OREstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Typic Haploxerepts
TYPICAL PEDON: Barron coarse sandy loam, on a 2 percent slope in a subdivided area at 1,000 feet elevation. (Colors are for moist soils unless otherwise stated.)
A1--0 to 4 inches; dark grayish brown (10YR 4/2) coarse sandy loam, grayish brown (10YR 5/2) dry; weak fine granular structure; slightly hard, very friable, nonsticky and nonplastic; common roots; moderately acid (pH 6.0); clear smooth boundary. (3 to 5 inches thick)
A2--4 to 9 inches; dark grayish brown (2.5Y 4/3) coarse sandy loam, very pale brown (10YR 7/3) dry; weak fine subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; common roots; moderately acid (pH 6.0); clear gradual boundary. (5 to 7 inches thick)
Bw--9 to 35 inches; light olive brown (2.5Y 5/4) coarse sandy loam, very pale brown (10YR 7/3) dry; weak fine subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; few roots; moderately acid (pH 5.0); clear gradual boundary. (20 to 30 inches thick)
C--35 to 60 inches; light olive brown (2.5Y 5/4) coarse sandy loam, very pale brown (10YR 7/4) dry; massive; slightly hard, very friable, nonsticky and nonplastic; few roots; moderately acid (pH 5.8).
TYPE LOCATION: Josephine County, Oregon; about 4 miles northwest of Grants Pass; near the junction of Vannoy Creek Road and Azalea Drive; 2,000 feet north and 260 feet west of the southeast corner of sec. 4, T. 36 S., R. 6 W.
RANGE IN CHARACTERISTICS: The solum is 30 to 40 inches thick. Depth to bedrock is 60 inches or more. The mean annual soil temperature is 54 to 56 degrees F. The soils are usually moist but are dry between depths of 8 and 24 inches for 80 to 110 consecutive days following the summer solstice. The particle-size control section averages 8 to 18 percent clay. It is moderately acid throughout.
The A horizon has hue of 10YR or 2.5Y, value of 5 through 7 dry and chroma of 2 or 3 moist and dry.
The Bw horizon has hue of 10YR or 2.5Y, value of 4 or 5 moist and 6 or 7 dry and chroma of 4 through 6 moist and 3 through 5 dry. It is coarse sandy loam or sandy loam.
The C horizon has hue of 10YR or 2.5Y, value of 4 or 5 moist and 6 or 7 dry and chroma of 2 through 6 moist and dry. It is coarse sandy loam or sandy loam.
COMPETING SERIES: These are the Arrastre, Bestrom, Cassolary, Clayton, Frailey, Green Bluff, Hudnut, Kartar, Koerling, Koseth, Quiden, Scala, Stoner and Tallowbox series. Arrastre and Bestrom soils are 20 to 40 inches to a lithic contact. Cassolary soils are dry for 60 to 75 consecutive days, have a mean annual soil temperature of 47 to 53 degrees F and are moderately well drained. Clayton soils have a solum 10 to 20 inches thick and have a E and Bs horizon. Frailey soils are dry 60 to 80 consecutive days, have a mean annual soil temperature of 47 to 51 degrees F and have loam texture throughout the profile. Green Bluff soils are dry for 60 to 80 consecutive days, have a mean annual soil temperature of 47 to 52 degrees F and are silt loam and loam textured throughout. Hudnut soils have a mean annual soil temperature of 47 to 50 degrees F, have a solum 15 to 32 inches thick and have 15 to 35 percent rock fragments in the particle-size control section. Kartar soils have a mean annual soil temperature of 47 to 52 degrees F and typically have 15 to 35 percent gravel in the particle-size control section. Koerling soils have a mean annual soil temperature of 47 to 52 degrees F and have calcareous lake sediments at 24 to 40 inches. Koseth soils are neutral to moderately alkaline, have 15 to 35 percent gravel and cobbles in the particle-size control section, are dry for 60 to 80 consecutive days and have a mean annual soil temperature of 48 to 50 degrees F. Quinden soils have a solum over 60 inches thick, have hue of 7.5YR or 5YR throughout and are loam or gravelly loam textured throughout. Scala soils are dry 60 to 90 consecutive days and have a mean annual soil temperature of 47 to 52 degrees F. Stoner soils have 15 to 35 percent rock fragments in the particle-size control section. Tallowbox soils are 20 to 40 inches to a paralithic contact.
GEOGRAPHIC SETTING: Barron soils are on toeslopes and alluvial fans and are at elevations of 800 to 2,500 feet. Slopes range from 2 to 12 percent. The soils formed in colluvium and alluvium weathered from granitic rocks. The mean annual temperature is 50 to 54 degrees F. The mean annual precipitation is 18 to 40 inches. The frost-free period is 120 to 180 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Clawson, Jerome, Ruch and Shefflein soils and the competing Tallowbox soils. Clawson soils are somewhat poorly drained. Shefflein and Ruch soils are fine-loamy and have an argillic horizon. Jerome soils have contrasting textures in the particle-size control section.
DRAINAGE AND PERMEABILITY: Somewhat excessively drained; slow runoff; moderately rapid permeability.
USE AND VEGETATION: Barron soils are used for pasture, hay, homesites, timber production and grazing. Natural vegetation is Douglas fir, ponderosa pine, Pacific madrone, California black oak, manzanita, and grasses.
DISTRIBUTION AND EXTENT: Southwestern Oregon. The series is moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: Jackson County, Oregon, 1919.