LOCATION PACKARD OREstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Pachic Haploxerolls
TYPICAL PEDON: Packard gravelly loam, on a 1 percent slope under pasture. (Colors are for moist soil unless otherwise noted.)
Ap--0 to 12 inches; very dark grayish brown (10YR 3/2) gravelly loam, dark grayish brown (10YR 4/2) dry; moderate very fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine roots; many very fine irregular pores; 25 percent fine gravel; slightly acid (pH 6.2); abrupt smooth boundary. (7 to 12 inches thick)
Bw1--12 to 21 inches; dark brown (10YR 3/3) gravelly clay loam, dark brown (10YR 4/3) dry; moderate very fine subangular blocky structure; hard, friable, sticky and slightly plastic; many very fine irregular roots; many very fine pores; 25 percent fine gravel; slightly acid (pH 6.2); clear smooth boundary. (0 to 10 inches thick)
Bw2--21 to 32 inches; dark brown (7.5YR 3/3) very gravelly clay loam, dark brown (10YR 4/3) dry; moderate very fine subangular blocky structure; hard, friable, sticky and slightly plastic; common very fine roots; many very fine irregular and tubular pores; 15 percent cobbles and 25 percent gravel; slightly acid (pH 6.2); clear wavy boundary. (10 to 24 inches thick)
C--32 to 60 inches; dark reddish brown (5YR 4/4) extremely gravelly clay loam, reddish brown (5YR 5/4) dry; massive; hard, friable, sticky and slightly plastic; few roots; many irregular pores; 45 percent gravel and 20 percent cobbles; slightly acid (pH 6.2).
TYPE LOCATION: Douglas County, Oregon; about 5 miles east of Sutherlin in Camas Swale; across road from Fairoaks Grange Hall; 1,730 feet west and 1400 feet south of the Northeast corner of section 7, T. 25 S., R. 4 W.
RANGE IN CHARACTERISTICS: The mean annual soil temperature is 52 to 57 degrees F. The soil is usually moist but is dry throughout the control section for 45 to 70 consecutive days during a four month period following the summer solstice. Depth to bedrock is over 60 inches and the sola is 24 to 40 inches thick. The control section has an average of 35 to 50 percent rock fragments, mainly gravel and 25 to 35 percent clay. The mollic epipedon is 24 to 40 inches thick. It is medium to slightly acid throughout the soil. The A and B horizons have hue of 10YR or 7.5YR.
The A horizon has value of 2 or 3 moist and 4 or 5 dry, and chroma of 2 or 3 moist or dry. It has 15 to 30 percent gravel and 0 to 5 percent cobbles.
The Bw horizon has value of 3 moist to 20 inches or more and 3 or 4 below 20 inches, value of 4 or 5 dry, and chroma of 2 or 3 moist and 3 or 4 dry. It is gravelly or very gravelly clay loam or very gravelly loam. It has 0 to 20 percent cobbles and 20 to 40 percent gravel.
The C horizon has hue of 7.5YR or 5YR value of 3 or 4 moist, 4 or 5 dry, chroma of 3 or 4 moist and dry. It is extremely or very gravelly clay loam or extremely gravelly loam with 35 to 60 percent gravel and 10 to 25 percent cobbles. Some pedons have faint to distinct redoximorphic features below 30 inches.
COMPETING SERIES: These are the Dehlinger, Demox, Drit, Gamboa, Langrell, Plumas, Murken, Raster and Wrentham series. The Gamboa soils have less than 25 percent clay in the control section. The Wrentham soils are 20 to 40 inches deep to bedrock. Dehlinger soils are neutral to mildly alkaline.
GEOGRAPHIC SETTING: Packard soils are on nearly level low stream terraces and floodplains at elevations of 200 to 2,000 feet. Slopes are dominantly 0 to 5 percent. The soils formed in stratified alluvium of mixed materials. The climate is characterized by cool moist winters and warm dry summers. The mean annual precipitation is 30 to 60 inches. The mean annual temperature is 50 to 55 degrees F., and the frost-free period is 160 to 235 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Coburg, Foehlin, Fordice and Waldo soils. Coburg soils are in the fine textural family. Foehlin and Waldo soils have less than 35 percent rock fragments in the control section. Fordice soils have an argillic horizon.
DRAINAGE AND PERMEABILITY: Well drained; moderate permeability. Flooding is none or rare.
USE AND VEGETATION: These soils are used for pasture, hay and small grains. Native vegetation is ponderosa pine, Oregon white oak, Douglas fir, rose, blackberry and grasses.
DISTRIBUTION AND EXTENT: Umpqua Valleys of west central Oregon. The series is inextensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California
SERIES ESTABLISHED: Douglas County, Oregon, 1994.
REMARKS: The superactive cation exchange activity class was added to the classification in 10/2005. The competing series section was not updated at that time. Last revision 2/1996.