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ͪشԹ  :    Cha-am (Ca)
 
 
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Apg
0-19
Dark grayish brown (10YR4/2) heavy clay; few fine distinct strong brown(7.5YR5/8) mottles, mainly along root channels; weak medium prismatic breaking to coarse subangular blocky structure; firm, sticky, plastic; many fine and few medium roots; very strongly acid (field pH 4.5); clear, slightly wavy boundary.
BAg
19-46
Grayish brown (10YR5/2) heavy clay; many fine and medium prominent yellowish red (5YR4/6-8) mottles, mainly as coatings in root channels and on ped faces; moderate weak medium and coarse subangular blocky structure; firm, sticky, plastic; very strongly acid (field pH 4.5); gradual, smooth boundary.
Bjg1
46-90
Grayish brown (10YR5/2) heavy clay; many medium and few coarse distinct pale yellow (2.5Y7/4) mottles, mainly filling in coarse root channels and on ped faces; moderate weak angular and subangular blocky structure; slightly firm, sticky, plastic; very strongly acid (field pH 4.5); gradual, smooth boundary.
Bjg2
90-120
Dark gray to gray (5Y4-5/1) heavy clay; many coarse prominent dark reddish brown (5YR3/3) and reddish brown (5YR4/4) mottles only as coatings on vertical ped faces, few medium and coarse prominent pale yellow (2.5Y7/4) mottles, only very thin coatings on vertical ped faces; moderate coarse angular blocky structure; sticky, plastic; very strongly acid (field pH 5.0); gradual, smooth boundary.
Cg1
120-150
Dark greenish gray (5GY4/1) nearly ripe clay; few dark reddish brown; iron coatings in vertical medium pores; sticky, plastic; slightly hard iron coatings on vertical ped faces; moderately alkaline (field pH 8.0); gradual, smooth boundary.
Cg2
150-200
Dark greenish gray (5GY4/1) half ripe clay; at 100 cm; a thin silty clay layer of 3 cm thick with firm consistence; color close to 5GY5/1; moderately alkaline (field pH 8.0).