Page 144 - E-BOOK English

Soil classification

WRB: Gleyic Solonchaks
Soil taxonomy: Coarse-loamy, mixed, active, nonacid, isohyperthermic Typic Halaquepts

Soil series: Udon series (Ud)

Profile description

 0-12 cm (Ap) Light brown (7.5YR 6/4) sandy loam;
common fine yellowish red mottles; weak fine
subangular blocky structure; soft, friable,
nonsticky, nonplastic; common fine roots; slightly
acid (field pH 6.5); gradual, smooth boundary.

 12-30 cm (Apg) Pinkish gray (7.5YR 7/2)
sandy loam; few and common fine reddish
yellow mottles; weak fine subangular blocky
structure; slightly hard, firm, nonsticky,
nonplastic; few fine roots; neutral (field pH
7.0); abrupt, smooth boundary.

 30-60 cm (Bg1) Gray (10YR 6/1) clay with
few spots of sand; few fine strong brown and
brownish yellow mottles; weak to moderate
fine to medium subangular blocky structures;
slightly sticky, plastic; common rounded
ironstone nodules (Ø 3 mm) and few spots
of soft iron-manganese nodules; moderately
alkaline (field pH 8.0); clear, smooth boundary.

 60-90 cm (Bg2) Light gray (10YR 7/1) sandy loam;
many fine yellow mottles; moderate fine to
medium subangular blocky structures; slightly sticky,
slightly plastic; common fine tubular pores; few
slightly hard iron-manganese nodules; moderately
alkaline (field pH 8.0); clear, smooth boundary.

 90-105 cm (Bg3) Light gray (7.5YR 7/2) sandy clay loam; many medium reddish yellow mottles; moderate
fine to medium subangular blocky structures; firm, slightly sticky, nonplastic; few soft iron-manganese
nodules; common fine tubular pores; moderately alkaline (field pH 8.0); clear, smooth boundary.

 105-120 cm (Bg4) Light gray (10YR 7/1) sandy loam; many medium reddish yellow mottles; moderate
fine to medium subangular blocky structures; slightly sticky, slightly plastic; common fine tubular
pores; moderately alkaline (field pH 8.0); clear, smooth boundary.

 120-150 cm (Bg5) Light gray (10YR 7/1) clay with some discernable sand fraction; many medium
brownish yellow mottles; moderate fine to medium subangular blocky structures; slightly sticky,
plastic; few soft iron-manganese nodules; strongly alkaline (field pH 8.5).

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