Page 149 - E-BOOK English

The representatives of Solonetz in Thailand

Gleyic Solonetz

Gleyic Solonetz have a layer ≥ 25 cm yellowish brown or brownish yellow mottles
thick, and starting ≤ 75 cm from the mineral occur throughout the profile. Reaction is very

surface soil, that has gleyic properties throughout strongly acid to strongly alkaline (pH 5.0-8.5).
and reducing conditions in some parts of every This soil contains salt crusts that are not suitable

sublayer. for any crop production. Thus, they are

Kula Ronghai series (Ki) is a representative maintained as bare land with patches of
of Gleyic Solonetz. Kula Ronghai soils are salt-tolerant weeds and native shrubs. Patches

formed from old alluvium and occur on the can be used for the cultivation of paddy rice if

lower part of peneplain, mainly in Northeast the salinity is not too high and water supply is
region. Relief is level to nearly level. Slope is adequate.
0 to 2 percent. Drainage is poorly drained

annually, flooded by river water and by

impounded rain water up to 1 m deep for
3 to 4 months. Permeability is moderate to
slow and runoff is slow. They are deep salt

affected soils and characterized by a dark

grayish brown or grayish brown sandy loam or
loam A horizon overlying a pinkish gray or gray
loam, sandy clay loam or light clay loam natric

B horizon. The C horizon occurs at some depth

below 100 cm of the surface with a light gray
or greenish gray loam or light clay loam texture.
The 2C horizon of light brown or light yellowish

brown sandy loam or loamy sand may occur

instead of the C horizon. Strong brown and/or

147