LOCATION HARANA OREstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Cumulic Haploxerolls
TYPICAL PEDON: Harana silty clay loam, cultivated. (Colors are for moist soil unless otherwise noted.)
Ap--0 to 8 inches; black (10YR 2/1) silty clay loam, dark gray (10YR 4/1) dry; strong fine granular structure; hard, firm, sticky and plastic; many very fine to medium roots; many fine irregular pores; mildly alkaline (pH 7.6); abrupt smooth boundary. (6 to 8 inches thick)
A12--8 to 16 inches; black (10YR 2/1) silty clay loam, dark gray (10YR 4/1) dry; weak medium sticky parting to strong very fine subangular blocky structure; hard, firm, sticky and plastic; many very fine to medium roots; many very fine tubular pores; mildly alkaline (pH 7.6); gradual wavy boundary. (6 to 8 inches thick)
A13--16 to 24 inches; black (10YR 2/1) silty clay loam, gray (10YR 5/1) dry; strong very fine subangular blocky structure; very hard, firm, sticky and plastic; many very fine to medium roots; many very fine tubular pores; moderately alkaline (pH 8.0); gradual wavy boundary. (4 to 10 inches thick)
C1ca--24 to 43 inches; black (10YR 2/1) silty clay loam, dark gray (10YR 4/1) dry; weak very fine subangular blocky structure; very hard, firm, sticky and plastic; many very fine to medium roots; many very fine tubular pores; moderately alkaline (pH 8.2); gradual wavy boundary. (6 to 10 inches thick)
C2--34 to 43 inches; black (10YR 2/1) silty clay loam, dark gray (10YR 4/1) dry; weak very fine subangular blocky structure; very hard, firm, sticky and plastic; many very fine to medium roots; many very fine tubular pores; moderately alkaline (pH 8.2); gradual wavy boundary. (6 to 10 inches thick)
C3--43 to 60 inches; black (7.5YR 2/0) clay, black (7.5YR 2/0) dry; massive; very hard, very firm, very sticky and very plastic; few medium roots; few fine irregular pores; moderately alkaline (pH 8.2).
TYPE LOCATION: Malheur County, Oregon; about 2 1/2 miles northwest of Jamieson, 60 feet west of Willow Creek, 600 feet north of section line (fence line); SW1/4 SE1/4 SW1/4 section 32, T.15S., R.43E.
RANGE IN CHARACTERISTICS: The mean annual soil temperature is 50 to 54 degrees F. Harana soils are dry for at least 60 consecutive days between depths of 4 and 12 inches within the 4 month period following the summer solstice. They are mildly to moderately alkaline and are calcareous in the upper part of the C horizon. The mollic epipedon is more than 20 inches thick. Depth to bedrock is more than 60 inches. The profile to depth of 40 inches lacks rock fragments but few pebbles are below depth of 40 inches in some pedons. Hue commonly is 10YR but ranges to 7.5YR.
The A and C horizons to depth of 40 inches have value of 4 or 5 dry. They are silty clay loam throughout with the control section averaging 27 to 35 percent clay and less than 15 percent coarser than very fine sand.
The C horizon below depth of 40 inches has value of 2 or 3 moist and chroma of 1 or less; high chroma mottles are in some pedons. It is sitly clay loam, silty clay, or clay.
COMPETING SERIES: These are the Caldwell, Jett, Keigley, Red Rock, Snow and Umpqua series. Caldwell soils are neutral and noncalcareous throughout and are somewhat poorly drained. Jett and Red Rock soils have 18 to 27 percent clay in the control section. Also, Jett soils have chroma of 2 below depth of 20 inches. Keigley soils are strongly calcareous throughout and have more than 15 percent calcium carbonate equivalent. Snow soils are neutral, noncalcareous and have 18 to 27 percent clay in the control section. Umpqua soils are neutral or slightly acid, noncalcareous and have chroma of 2 or 3.
GEOGRAPHIC SETTING: Harana soils are on nearly level and gently sloping floodplains and alluvial fans at elevations of 2,200 to 3,200 feet. They formed in mixed alluvium. The climate is semiarid and has hot dry summers and cold winters. The mean annual precipitation is 9 to 11 inches. The average January temperature is about 27 degrees F. The average July temperature is about 74 degrees F. The mean annual temperature ranges from 48 to 52 degrees F. The average frost free period is 120 to 140 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Jett soils and the Powder, Stanfield, and Umapine soils. Powder soils are medium textured. Stanfield soils are strongly alkaline and have a duripan. Umapine soils are very strongly alkaline and poorly drained.
DRAINAGE AND PERMEABILITY: Moderately well drained; slow runoff; moderately slow permeability.
USE AND VEGETATION: Irrigated cropland producing alfalfa, small grains, sugar beets and corn. Native vegetation is mainly giant wild ryegrass, bluegrasses and big sagebrush.
DISTRIBUTION AND EXTENT: Northern Malheur County. The series is inextensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Malheur County, Oregon, 1975.