Soil Series Atlas

Troup soil series

Loamy, kaolinitic, thermic Grossarenic Kandiudults

050100150200cm1 ft2 ft3 ft4 ft5 ft6 ftOiOrganic layer · slightly decomposed0–8 cm · 0–3 inATopsoil8–18 cm · 3–7 inE1Leached layer18–58 cm · 7–23 inE2Leached layer58–112 cm · 23–44 inBt1Subsoil · clay build-up112–137 cm · 44–54 inBt2Subsoil · clay build-up137–165 cm · 54–65 inBt3Subsoil · clay build-up165–203 cm · 65–80 in050100150200cmOiOrganic layer ·slightly decomposed0–8 cm · 0–3 inATopsoil8–18 cm · 3–7 inE1Leached layer18–58 cm · 7–23 inE2Leached layer58–112 cm · 23–44 inBt1Subsoil · clay build-up112–137 cm · 44–54 inBt2Subsoil · clay build-up137–165 cm · 54–65 inBt3Subsoil · clay build-up165–203 cm · 65–80 in
Typical pedon, to scale: 203 cm (80 in), 7 horizons.

Ultisols — strongly weathered, leached soils with a clay-enriched subsoil

Troup is mapped on 2.02 million acres in 6 states, 33rd nationally by area. Besides it, only Clarksville and Kalkaska are somewhat excessively drained in this atlas. Its biggest share, 31%, is in Georgia, where it ranks 10th of 327 series. It was first described in Alabama, which holds 28% of its acres today.

Depth
Very deep
Drainage
Somewhat excessively drained
Water movement
Moderately high

Compare with another seriesSimilar series in the finder

Where Troup is mapped

2,024,615 acres in 94 soil survey areas, from current SSURGO data.

Alabama: 558,552 acresArizonaColoradoFlorida: 480,002 acresGeorgia: 621,767 acresIndianaKansasMaineMassachusettsMinnesotaNew JerseyNorth Carolina: 11,219 acresNorth DakotaOklahomaPennsylvaniaSouth DakotaTexasWyomingConnecticutMissouriWest VirginiaIllinoisNew MexicoArkansasCaliforniaDelawareDistrict of ColumbiaIowaKentuckyMarylandMichiganMississippi: 16,983 acresMontanaNew HampshireNew YorkOhioOregonTennesseeUtahVirginiaWashingtonWisconsinNebraskaSouth Carolina: 336,092 acresIdahoNevadaVermontLouisianaRhode Island

Share of all Troup acres

  1. Georgia31%
  2. Alabama28%
  3. Florida24%
  4. South Carolina17%
  5. Mississippi0.8%
  6. North Carolina0.6%

In the field

Drainage

Somewhat excessively drained

Drains fastStays wet

Clarksville and Kalkaska also are somewhat excessively drained.

Soil depth

Very deep

ShallowDeep

Water movement (Ksat)

Moderately high

SlowFast
Parent material
Marine/coastal plain sediments
Landform
Ridges/interfluves, hills
Major land resource areas
133A, 153A
Type location
Alabama

How it is classified

  1. OrderUltisols
  2. SuborderUdults
  3. Great groupKandiudults
  4. SubgroupGrossarenic Kandiudults
  5. FamilyLoamy, kaolinitic, thermic Grossarenic Kandiudultsloamy particle-size classkaolinitic mineralogy classthermic soil temperature regime

Against other Ultisols

Troup makes up 1.07% of all mapped Ultisols — the 9th largest of 1,278 series in the order.

Solum thickness (topsoil + subsoil)

203 cm over a median of 142 cm

Depth to the subsoil

112 cm over a median of 23 cm

Depth described

203 cm over a median of 178 cm

Its relatives

1 other established series share the family “Loamy, kaolinitic, thermic Grossarenic Kandiudults”

  1. Troup2.0 M
  2. Lucknow27 k

Close relatives, at one scale

  1. Troup203 cm · Grossarenic Kandiudults
  2. Tifton203 cm · Plinthic Kandiudults
  3. Orangeburg183 cm · Typic Kandiudults

Horizon by horizon

HorizonLayerDepthThickness
OiOrganic layer: slightly decomposed0–8 cm0–3 in8 cm
ATopsoil8–18 cm3–7 in10 cm
E1Leached layer18–58 cm7–23 in40 cm
E2Leached layer58–112 cm23–44 in54 cm
Bt1Subsoil: clay build-up112–137 cm44–54 in25 cm
Bt2Subsoil: clay build-up137–165 cm54–65 in28 cm
Bt3Subsoil: clay build-up165–203 cm65–80 in38 cm

Sources: USDA–NRCS Official Series Description (revised 2016-05), Soil Classification database and SSURGO. Ranks computed by Soil Series Atlas. Method · Guides