Page 66 - E-BOOK English

Soil classification

WRB: Haplic Ferralsols
Soil taxonomy: Fine, kaolinitic, isohyperthermic Typic Hapludox

Soil series: Tha Mai series (Ti)

Profile description

 0-20 cm (Ap) Dark reddish brown (5YR 3/3)

clay; weak fine granular structures; very
friable, slightly sticky and slightly plastic;

many fine and medium roots; strongly acid
(field pH 5.5); diffuse, smooth boundary.

 20-50 cm (Bo1) Dark reddish brown (5YR 3/4)
clay; weak fine subangular blocky structures;
very friable, slightly sticky and slightly

plastic; many fine and medium roots; strongly
acid (field pH 5.5); diffuse, smooth boundary.

 50-95 cm (Bo2) Dark reddish brown to
reddish brown (5YR 3-4/4) clay; weak fine
and medium subangular blocky structures;

very friable, slightly sticky and slightly

plastic; common fine and medium roots;
strongly acid (field pH 5.5); diffuse, smooth
boundary.

 95-125 cm (Bo3) Dark reddish brown to
reddish brown (5YR 3-4/4) clay; weak

medium subangular blocky structures; very
friable, slightly sticky and slightly plastic;

few fine roots; strongly acid (field pH 5.5).

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