LOCATION ORSINO FL
Established Series
Rev. HFH/AGH
10/2018
ORSINO SERIES
The Orsino series consists of very deep, moderately well drained, very rapidly permeable soils that formed in thick beds of sandy marine or aeolian deposits. They are on moderately high ridges in the Coastal Plain. Slopes range from 0 to 8 percent.
TAXONOMIC CLASS: Hyperthermic, uncoated Spodic Quartzipsamments
TYPICAL PEDON: Orsino fine sand--forested. (Colors are for moist soil unless otherwise stated.)
A1--0 to 4 inches; dark gray (10YR 4/1) fine sand; single grained; loose; many fine, medium and coarse roots; strongly acid; gradual smooth boundary. (2 to 5 inches thick)
A2--4 to 7 inches; gray (10YR 5/1) fine sand; single grained; loose; common fine, medium and coarse roots; strongly acid; gradual wavy boundary. (0 to 3 inches thick)
E1--7 to 16 inches; light gray (10YR 7/2) fine sand; single grained; loose; common fine, medium and coarse roots; strongly acid; gradual wavy boundary. (2 to 14 inches thick)
E2--16 to 22 inches; light gray (10YR 7/2) fine sand; common medium distinct yellowish brown (10YR 5/4) and light yellowish brown (10YR 6/4) mottles; single grained; loose; common medium roots and few coarse roots; strongly acid; abrupt irregular boundary. (4 to 20 inches thick)
B/E and Bh1--22 to 28 inches; yellowish brown (10YR 5/6) fine sand (Bw); common light gray (10YR 7/1) fine sand tongues of (E) horizon 1 to 5 inches in diameter; single grained; loose; common medium roots, few fine and coarse roots; 0.5 to 3 inches thick discontinuous lenses of weakly cemented very dark grayish brown (10YR 3/2), dark brown (10YR 3/3), and brown (10YR 4/3), at upper contact of horizon; moderately acid; gradual wavy boundary. (0 to 20 inches thick)
B/E and Bh2--28 to 37 inches; brownish yellow (10YR 6/6) fine sand (Bw); common light gray (10YR 6/1) fine sand tongues of (E) horizon 1 to 5 inches in diameter; discontinuous very dark grayish brown (10YR 3/3) fine sand (Bh) 0.25 to 1 inches wide on contact between the (E and Bw) horizons; common fine faint brownish yellow mottles; single grained; loose; common medium roots; common medium prominent dark brown (10YR 3/3) mottles in tongues; moderately acid; gradual wavy boundary. (0 to 30 inches thick)
Bw--37 to 69 inches; yellow (10YR 7/6) fine sand; common medium distinct strong brown (7.5YR 5/8), common fine prominent red and common coarse faint very pale brown (10YR 7/3) mottles; single grained; loose; few 1 to 5 inch diameter tongues of light gray (10YR 7/1) with 0.25 to 1 inch wide discontinuous weakly cemented very dark grayish brown (10YR 3/2) exteriors; moderately acid; gradual wavy boundary. (6 to 34 inches thick)
C--69 to 81 inches; very pale brown (10YR 7/4) fine sand; single grained; loose; many uncoated sand grains; moderately acid.
TYPE LOCATION: Brevard County, Florida; 8.5 miles north of Mims and 200 feet west of junction of U. S. 1 and SR 5A in NE1/4SE1/4, sec. 2, R. 34 E., T. 20 S.
RANGE IN CHARACTERISTICS: Solum thickness is 40 inches or more. Soil reaction ranges from extremely acid to moderately acid. Texture is sand or fine sand to depths of 80 inches or more. Silt plus clay in the 10 to 40 inch control section is less than 5 percent.
The A horizon has hue of 10YR, value of 4 to 6, and chroma of 1 or 2; or hue N, value of 4 to 6. A mixture of dark organic matter and light gray sand grains gives this horizon a salt-and-pepper effect when dry.
The E horizon has hue of 10YR to 2.5Y,, value 6 of 8, and chroma of 1 to 3.
The Bw part of the B/E and Bh horizon has hue of 7.5YR to 10YR, value of 4 to 7, and chroma of 3 to 8. The tongues of E horizon have the same colors as the E horizon. The Bh parts of this horizon have hue of 5YR to 10YR, value of 2 to 4, and chroma of 2 to 4. Tongues of the E horizon extending into the B horizon range from none to common. Thus only a Bw would be in pedons without tongues. The Bh portion of the horizon occurs at the contact of the E and B horizon as discontinuous layers or lenses 1/4 to 2 inches thick.
The C horizon has hue of 10YR, value of 6 to 8, and chroma of 1 to 4 with or without mottles in shades of gray, red, yellow, or brown.
COMPETING SERIES: These are the
Dade,
Paola and
Welaka series in the same family and the closely similar
Astatula,
Candler,
St. Lucie and
Tavares series. Dade soils have a Cr horizon at a depth of 20 to 40 inches. Paola soils lack evidence of wetness within depths of 80 inches. Welaka soils have mixed sand and shell fragments below depths of 40 inches. Astatula, Candler, and St. Lucie soils are better drained and lack evidence of Bh horizons. In addition, Astatula soils lack E horizons, Candler soils have lamellae, and St. Lucie soils lack B horizons. Tavares soils lack E horizons and evidence of Bh horizons.
GEOGRAPHIC SETTING: Orsino soils are on moderately high ridges including dunes, and on sites transitional from the higher ridges to more poorly drained soils in the lower positions of the landscapes. Gradients range from 0 to 8 percent slopes. These soils formed in sandy marine or aeolian deposits. Precipitation averages 50 to 60 inches annually and mean annual air temperature is about 70 to 74 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing
Astatula,
Paola, and
St. Lucie series and the
Immokalee,
Myakka,
Placid,
Pompano, and
Sellers series. Immokalee and Myakka soils have spodic horizons and are poorly drained. Placid and Sellers soils have an umbric epipedon and are very poorly drained. Pompano soils have grayer colors and are poorly drained.
DRAINAGE AND PERMEABILITY: Orsino soils are moderately well drained; slow surface runoff; very rapid permeability. A water table is between 48 and 60 inches for more than 6 months during most years but recedes to depths greater than 60 inches during droughty periods.
USE AND VEGETATION: A few small areas are used for citrus and tame pasture. Most of this soil is used for forest. Native vegetation consists primarily of scrub vegetation with sand live oak, Chapman oak, myrtle oak, and scrub hickory. Scattered sand, slash, and longleaf pines and scattered bluejack, turkey, and post oak are found with a sparse understory.
DISTRIBUTION AND EXTENT: Central and southern parts of Peninsular Florida. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Auburn, Alabama
SERIES ESTABLISHED: Brevard County, Florida; 1970.
REMARKS: Diagnostic horizons are features in this pedon:
Ochric epipedon - 0 to 22 inches (A1, A2, E1, E2)
National Cooperative Soil Survey
U.S.A.