Page 56 - E-BOOK English

Eutric Cambisols

Eutric Cambisols have an effective base

saturation [exchangeable (Ca + Mg + K + Na) /
Exchangeable (Ca + Mg + K + Na + Al); exchangeable

bases by 1 M NH OAc (pH 7), exchangeable Al by
4
1 M KCl (unbuffered)] of ≥ 50%: in the major part

between 20 and 100 cm from the mineral surface
soil.

Bung Chanang series (Bng) is a

representative of Eutric Cambisols. Bueng Chanang
soils are formed from marl deposits on marl terrain.

Relief is nearly level to undulating. Slope are about
2-12 percent. Drainage is well drained. They

occupy some area in southeast coast of Thailand.
Soil permeability is moderate and surface runoff

is rapid. They are shallow to a layer of secondary
lime concretion or marl layer and characterized

by a dark reddish brown or dark brown clay surface
or A horizon overlying a reddish brown or yellowish

red clay cambic B horizon over a whitish secondary
lime concretion or marl layer. Soil pH is neutral

to strongly alkaline (pH 7.0-8.5). Land use limitations
are shallow to secondary lime nodules and lack

of water in growing season.

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