LOCATION PARKDALE OREstablished Series
TAXONOMIC CLASS: Ashy, amorphic, mesic Humic Vitrixerands
TYPICAL PEDON: Parkdale loam, cultivated. (Colors are for moist soil unless otherwise noted.)
Ap1--0 to 5 inches; dark brown (7.5YR 3/2) loam, brown (7.5YR 4/3) dry; weak fine granular structure; soft, very friable, nonsticky and nonplastic; many very fine and fine roots; many irregular pores; 5 percent nodules, 1 to 5 mm in diameter; slightly acid (pH 6.4); clear smooth boundary. (3 to 7 inches thick)
Ap2--5 to 10 inches; dark brown (7.5YR 3/2) loam, brown (7.5YR 4/3) dry; weak fine granular structure; soft, very friable, nonsticky and slightly plastic; common very fine and fine roots; common very fine tubular pores; 5 percent nodules, 1 to 5 mm in diameter; neutral (pH 6.6); abrupt wavy boundary. (0 to 6 inches thick)
Bw--10 to 18 inches; brown (7.5YR 4/4) silt loam, light yellowish brown (7.5YR 5/4) dry; weak very fine granular structure; soft, very friable, nonsticky and slightly plastic; common very fine or fine roots; few very fine tubular pores; 5 percent nodules, 1 to 5 mm in diameter; neutral (pH 6.6); clear wavy boundary. (0 to 8 inches thick)
C1--18 to 27 inches; brown (7.5YR 4/4) silt loam, light yellowish brown (10YR 6/4) dry; massive; soft, very friable, nonsticky and slightly plastic; common very fine and fine roots; common very fine tubular pores; 5 percent nodules, 1 to 5 mm in diameter; neutral (pH 6.6); clear wavy boundary. (8 to 12 inches thick)
C2--27 to 50 inches; brown (7.5YR 4/4) silt loam, light yellowish brown (10YR 6/4) dry; massive; soft, very friable, nonsticky and slightly plastic; common very fine roots; many very fine tubular pores; 10 percent firm nodules or shot, 2 to 10 mm in diameter; neutral (pH 6.6); clear smooth boundary. (18 to 25 inches thick)
C3--50 to 75 inches; yellowish brown (10YR 5/4) loam, very pale brown (10YR 7/4) dry; massive; soft, friable, nonsticky and slightly plastic; common very fine and fine roots; many very fine tubular pores; 10 percent nodules, 2 to 10 mm in diameter; 3 percent gravel; neutral (pH 6.6).
TYPE LOCATION: Hood River County, Oregon; 130 feet west and 50 feet south of east quarter corner in the NE1/4 NE1/4 NE1/4 section 6, T. 1 S., R. 10 E.
RANGE IN CHARACTERISTICS: The soils are usually moist and are dry between depths of 8 to 24 inches for 45 days to 60 days during the summer. The mean annual soil temperature is 47 to 51 degrees F. The soils are slightly acid to neutral. The solum is 7 to 20 inches thick. Depth to bedrock is greater than 60 inches. The control section lacks rock fragments. It has greater than 85 percent phosphate retention, acid oxalate extractable aluminum plus one-half iron of 2 to 3 percent, and 9 to 12 percent 15-bar moisture based on an air-dried sample. The umbric epipedon is 7 to 12 inches thick.
The A horizon has hue of 7.5YR or 10YR, value of 2 or 3 moist, 4 or 5 dry, and chroma of 2 or 3 moist and dry. It has 5 to 30 percent 1 to 5 mm diameter nodules.
The Bw has hue of 10YR or 7.5YR, value of 4 or 5 moist and 5 through 7 dry. It is loam or silt loam and has 4 to 10 percent clay. It has 5 to 30 percent 1 to 5 mm diameter nodules.
The C horizon has hue of 10YR or 7.5YR, value of 4 or 5 moist, 6 or 7 dry and chroma of 4 through 6 moist and dry.
COMPETING SERIES: This is the Shasta series. Shasta soils are dry for 90 consecutive days and is 20 to 40 inches to a sandy or gravelly sand substratum.
GEOGRAPHIC SETTING: Parkdale soils are on uplands. These soils formed in deep mud flows high in pyroclastic materials. Slopes are 0 to 40 percent. Elevations are 1,000 to 2,500 feet. The climate is characterized by cool wet winters and hot dry summers. The mean annual precipitation is 35 to 50 inches. The mean annual temperature is 45 to 49 degrees F., the mean January temperature is 29 to 33 degrees F., and the mean July temperature is 61 to 65 degrees F. The frost-free period is 100 to 120 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Culbertson and Dee soils which are located on similar positions. Culbertson soils are low in pyroclastic materials. Dee soils are mottled and somewhat poorly drained.
DRAINAGE AND PERMEABILITY: Well drained; moderate permeability.
USE AND VEGETATION: This soil is used mainly for orchard crops. Native vegetation is mainly Douglas fir, ponderosa pine, grand pine, forbs, and shrubs.
DISTRIBUTION AND EXTENT: Uplands of north-central Oregon and south-central Washington; MLRA 6. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Hood River-White Salmon River Area, Oregon-Washington, 1972.
REMARKS: This draft reflects a change in classification from Medial, mesic Umbric Vitrandepts based on the Andisol Order. Change subgroup from Umbric to Humic based on amendment 16.
Diagnostic horizons and features recognized in this pedon:
Umbric epipedon - from 0 to 10 inches (Ap1, and Ap2 horizons)
Cambic horizon - from 10 to 18 inches (Bw horizon)
Particle-size control section - from 0 to 40 inches (Ap1, Ap2, Bw, and C1 horizons, and upper 13 inches of C2 horizon)
Andic soil properties - throughout profile with volcanic glass and glass aggregate estimated to range from 30 to 50 percent.
ADDITIONAL DATA: Characterization data on 2 profiles (S61 Oreg.-14-9 and S61 Oreg.-14-10) reported in Riverside Soil Survey Laboratory Report for soils sampled in Hood River County, Oregon, October, 1961.