United States Department of Agriculture
Natural Resources Conservation Service		 Southeast Coastal Plain and Caribbean Soil Survey Region #15 Go to Accessibility Information
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Alaga Series

The Alaga series consists of very deep, somewhat excessively drained soils that formed in sandy sediments. These soils are on ridgetops in the uplands. Slopes range from 0 to 5 percent. These soils are thermic, coated Typic Quartzipsamments.

Alaga soils are commonly associated on the landscape with Luverne, Springhill, and Troup soils. Luverne and Springhill soils are in lower positions than the Alaga soils. They are on side slopes. Luverne soils have a clayey argillic horizon. Springhill soils have a loamy argillic horizon. Troup soils are in landscape positions similar to those of the Alaga soils. They have a loamy kandic horizon at a depth of 40 to 80 inches.

Typical pedon of Alaga loamy fine sand, in an area of Troup-Alaga complex, 0 to 5 percent slopes; about 5 miles north of Hatchechubbee, 2,700 feet east and 300 feet north of the southwest corner of sec. 28, T. 16 N., R. 28 E.

  • Ap—0 to 4 inches; dark brown (10YR 4/3) loamy fine sand; single grained; loose; many fine roots; moderately acid; abrupt smooth boundary.
  • C1—4 to 18 inches; yellowish brown (10YR 5/4) loamy sand; single grained; loose; common fine roots; moderately acid; clear wavy boundary.
  • C2—18 to 54 inches; yellowish brown (10YR 5/6) loamy sand; single grained; loose; strongly acid; gradual wavy boundary.
  • C3—54 to 63 inches; yellowish brown (10YR 5/6) loamy sand; single grained; loose; few streaks of uncoated sand; strongly acid; gradual wavy boundary.
  • C4—63 to 90 inches; light yellowish brown (10YR 6/4) loamy sand; single grained; loose; strongly acid.

The thickness of the sandy horizons is more than 80 inches. Reaction ranges from very strongly acid to moderately acid throughout the profile, except where lime has been applied. The content of quartz gravel ranges from 0 to 5 percent throughout the profile.

The A or Ap horizon has hue of 10YR, value of 3 to 5, and chroma of 2 or 3.

The C horizon has hue of 10YR, value of 4 to 8, and chroma of 4 to 6. The texture is loamy sand or sand.


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