\<@37\>Dundee Series

\<@33\>\<i\>*Major Land Resource Area:*\<p\> 131---Southern Mississippi
Valley Alluvium

\<@33\>\<i\>*Local physiographic area:*\<p\> High positions on natural
levees

\<@33\>\<i\>*Geomorphic setting:*\<p\> Natural levees on alluvial plains

\<@33\>\<i\>*Parent material:*\<p\> Loamy alluvium

\<@33\>\<i\>*Geology:*\<p\> Alluvial flood plains

\<@33\>\<i\>*Drainage class:*\<p\> Somewhat poorly drained

\<@33\>\<i\>*Permeability class:*\<p\> Moderately slow

\<@33\>\<i\>*Soil depth class:*\<p\> Very deep

\<@33\>\<i\>*Shrink-swell potential:*\<p\> Moderate

\<@33\>\<i\>*Slope:*\<p\> 0 to 2 percent

\<@33\>\<i\>*Taxonomic classification:*\<p\> Fine-silty, mixed, active,
thermic Typic Endoaqualfs

\<@27\>Associated Soils

\<@30\>The Dundee series in the survey area is commonly associated with
Goldman and Tensas soils.

-   \<@29\>The Goldman soils are moderately well drained.

-   \<@29\>The Tensas soils are clayey in the upper part of the solum.

\<@27\>Typical Pedon

\<@25\>Dundee silt loam, 0 to 1 percent slopes; in an area of row crops;
NW1/4 S.L.G. sec. 39, T. 10 N., R. 10 E.; Waterproof, Louisiana, USGS
7.5-minute quadrangle; lat. 31 degrees, 48 minutes, 25.19 seconds north
and long. 91 degrees, 25 minutes, 10.40 seconds west.

\<@23\>Ap1---0 to 3 inches; silt loam, brown (10YR 5/3) broken face;
weak fine subangular blocky structure; friable; many fine roots
throughout; many fine low-continuity tubular pores; 1 percent fine faint
spherical extremely weakly cemented yellowish brown (10YR 5/4)
iron-manganese masses that are in the matrix and have sharp boundaries;
extremely acid; clear wavy boundary.

\<@33\>Ap2---3 to 9 inches; silt loam, grayish brown (10YR 5/2) broken
face; weak fine subangular blocky structure; friable; many fine roots
throughout; many fine low-continuity tubular pores; 5 percent medium
distinct spherical extremely weakly cemented yellowish brown (10YR 5/6)
iron-manganese masses that are in the matrix and have sharp boundaries;
extremely acid; clear smooth boundary.

\<@33\>Bt1---9 to 13 inches; loam, grayish brown (10YR 5/2) interior;
moderate medium subangular blocky structure; firm; common fine roots
throughout; many fine and medium low-continuity tubular pores; 20
percent discontinuous faint dark grayish brown (10YR 4/2) clay films on
faces of peds; 5 percent medium distinct spherical extremely weakly
cemented dark yellowish brown (10YR 4/4) iron-manganese masses that are
in the matrix and have sharp boundaries; 5 percent medium distinct
spherical extremely weakly cemented yellowish brown (10YR 5/4)
iron-manganese masses that are in the matrix and have sharp boundaries;
strongly acid; gradual wavy boundary.

\<@33\>Bt2---13 to 23 inches; loam, dark grayish brown (10YR 4/2)
interior; moderate medium subangular blocky structure; friable; common
very fine roots throughout; many fine and medium low-continuity tubular
pores; 70 percent discontinuous distinct dark grayish brown (10YR 4/2)
clay films on faces of peds; 5 percent medium distinct spherical
extremely weakly cemented dark yellowish brown (10YR 4/4) iron-manganese
masses that are in the matrix and have sharp boundaries; very strongly
acid; gradual wavy boundary.

\<@33\>Bt3---23 to 34 inches; very fine sandy loam, grayish brown (10YR
5/2) interior; moderate fine subangular blocky structure; very friable;
common fine roots throughout; common medium low-continuity tubular
pores; 20 percent discontinuous faint dark grayish brown (10YR 4/2) clay
films on faces of peds; 5 percent medium distinct spherical extremely
weakly cemented dark yellowish brown (10YR 4/6) iron-manganese masses
that are in the matrix and have sharp boundaries; 1 percent fine
distinct spherical moderately cemented very dark gray (10YR 3/1)
manganese masses that are in the matrix and have sharp boundaries; very
strongly acid; clear smooth boundary.

\<@33\>Bg1---34 to 43 inches; very fine sandy loam, grayish brown (10YR
5/2) broken face; weak fine subangular blocky structure; very friable;
common very fine roots throughout; many fine low-continuity tubular
pores; 5 percent medium distinct spherical extremely weakly cemented
dark yellowish brown (10YR 4/4) iron-manganese masses that are in the
matrix and have sharp boundaries; 5 percent medium distinct spherical
extremely weakly cemented yellowish brown (10YR 5/4) iron-manganese
masses that are in the matrix and have sharp boundaries; very strongly
acid; gradual wavy boundary.

\<@33\>Bg2---43 to 48 inches; loam, grayish brown (10YR 5/2) broken
face; weak fine subangular blocky structure; very friable; common very
fine roots throughout; many fine low-continuity tubular pores; 5 percent
medium distinct spherical extremely weakly cemented yellowish brown
(10YR 5/6) iron-manganese masses that are in the matrix and have sharp
boundaries; 5 percent medium faint spherical extremely weakly cemented
yellowish brown (10YR 5/4) iron-manganese masses that are in the matrix
and have sharp boundaries; strongly acid; gradual wavy boundary.

\<@33\>Bg3---48 to 58 inches; very fine sandy loam, grayish brown (10YR
5/2) broken face; weak fine subangular blocky structure; very friable;
common very fine roots throughout; many fine low-continuity tubular
pores; 5 percent fine faint spherical extremely weakly cemented
yellowish brown (10YR 5/4) iron-manganese masses that are in the matrix
and have sharp boundaries; 5 percent fine faint spherical extremely
weakly cemented yellowish brown (10YR 5/6) iron-manganese masses that
are in the matrix and have sharp boundaries; strongly acid; gradual wavy
boundary.

\<@33\>Bg4---58 to 65 inches; loamy very fine sand, grayish brown (10YR
5/2) broken face; weak fine subangular blocky structure; very friable;
common very fine roots throughout; many fine low-continuity tubular
pores; 5 percent medium faint spherical extremely weakly cemented
yellowish brown (10YR 5/6) iron-manganese masses that are in the matrix
and have sharp boundaries; strongly acid; gradual wavy boundary.

\<@33\>Bg5---65 to 73 inches; loam, grayish brown (2.5Y 5/2) broken
face; weak fine subangular blocky structure; very friable; common very
fine roots throughout; 5 percent medium distinct spherical extremely
weakly cemented yellowish brown (10YR 5/6) iron-manganese masses that
are in the matrix and have sharp boundaries; 1 percent fine prominent
spherical extremely weakly cemented strong brown (7.5YR 5/6)
iron-manganese masses that are in the matrix and have sharp boundaries;
strongly acid; gradual wavy boundary.

\<@33\>Bg6---73 to 82 inches; silt loam, grayish brown (10YR 5/2) broken
face; weak fine subangular blocky structure; very friable; 5 percent
medium distinct spherical extremely weakly cemented strong brown (7.5YR
5/6) iron-manganese masses that are in the matrix and have sharp
boundaries; moderately acid; abrupt smooth boundary.

\<@33\>C---82 to 89 inches; stratified fine sandy loam, 60 percent brown
(10YR 5/3) and 40 percent dark yellowish brown (10YR 4/4) broken face;
massive; very friable; moderately acid.

\<@27\>Range in Characteristics

\<@33\>\<i\>*Thickness of the solum:*\<p\> 24 to more than 80 inches

\<@33\>\<i\>*Content of clay in the control section:*\<p\> 18 to 35
percent

\<@33\>\<i\>*Redoximorphic features:*\<p\> Iron-manganese accumulations
throughout

\<@33\>\<i\>*Other distinctive features:*\<p\> Tubular pores throughout

\<@33\>\<i\>*Concentrated minerals:*\<p\> None

\<@23\>\<i\>*A or Ap horizon:*\<p\>

\<@31\>Color---hue of 10YR, value of 4 or 5, and chroma of 2 or 3; or,
in some pedons where the horizon is less than 6 inches thick, hue of
10YR, value of 3, and chroma of 2

\<@31\>Redoximorphic features---the number of iron accumulations in
shades of brown ranges from none to common.

\<@31\>Texture---silt loam or silty clay loam

\<@31\>Other distinctive features---tubular pores

\<@31\>Reaction---extremely acid to moderately acid

\<@31\>Thickness---4 to 12 inches

\<@23\>\<i\>*BA or AB horizon: (where present)*\<p\>

\<@31\>Color---hue of 10YR, value of 4 or 5, and chroma of 2

\<@31\>Redoximorphic features---iron accumulations and depletions in
shades of gray or brown

\<@31\>Texture---silt loam, very fine sandy loam, or loam

\<@31\>Other distinctive features---tubular pores

\<@31\>Reaction---very strongly acid to moderately acid

\<@31\>Thickness---0 to 8 inches

\<@23\>\<i\>*Bg or Btg horizon:*\<p\>

\<@31\>Color---hue of 10YR or 2.5Y, value of 4 or 5, and chroma of 2;
or, in the lower part of the horizon, hue of 10YR, value 6, and chroma
of 1 or 2 or hue of 10YR, value of 4 or 5, and chroma of 1

\<@31\>Redoximorphic features---iron accumulations and depletions in
shades of gray and brown

\<@31\>Texture---silty clay loam, loam, or silt loam; the upper 20
inches has 18 to 34 percent clay and more than 15 percent sand that is
mainly in the very-fine size fraction.

\<@31\>Other distinctive features---tubular pores

\<@31\>Reaction---very strongly acid to moderately acid

\<@31\>Thickness---20 to 40 inches

\<@23\>\<i\>*BCg horizon: (where present)*\<p\>

\<@31\>Color---dominantly hue of 10YR, value of 4 to 6, and chroma of 1
or 2 or hue of 2.5Y, value of 4 or 5, and chroma of 2; below a depth of
80 inches hue of 10YR, value of 4 to 6, and chroma of 1 to 4

\<@31\>Redoximorphic features---iron accumulations and depletions in
shades of brown, yellow, and gray

\<@31\>Texture---loam, sandy clay loam, or silt loam

\<@31\>Other distinctive features---none

\<@31\>Reaction---very strongly acid to moderately acid

\<@31\>Thickness---0 to 13 inches

\<@23\>\<i\>*C or Cg horizon:*\<p\>

\<@31\>Color---dominantly hue of 10YR, value of 4 to 6, and chroma of 1
or 2 or hue of 2.5Y, value of 4 or 5, and chroma of 2; or, below a depth
of 80 inches, hue of 10YR, value of 4 to 6, and chroma of 1 to 4

\<@31\>Redoximorphic features---masses of iron accumulation in shades of
yellow and brown

\<@31\>Texture---loam, very fine sandy loam, fine sandy loam, silt loam,
or silty clay loam; and, in some pedons, strata of silty clay or clay
below a depth of 40 inches

\<@31\>Other distinctive features---stratification

\<@31\>Reaction---very strongly acid to slightly alkaline;
calcium-magnesium ratio of more than 1

\<@31\>Thickness---7 to 56 inches