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ͪشԹ  :  §ͧ  Chiang Khong (Cg)
 
 
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A
0-4
Dark reddish brown (5YR3/4) silty clay loam; strong medium and fine subangular blocky and granular structure; very friable, slightly sticky, slightly plastic; very frequent, very fine, few fine and medium roots; medium acid (field pH 6.0); clear, smooth boundary.
AB
4-14
Reddish brown (5YR4/4) clay; strong medium and fine subangular blocky with some crumb and granular structure; friable, sticky, plastic; frequent very fine to medium roots; very strongly acid (field pH 5.0); clear, smooth boundary.
Bt1
14-50
Yellowish red to red (5YR-2.5YR4/6) clay; moderate medium and fine subangular blocky structure; slightly firm, sticky, plastic; patchy and continuous moderately thick cutans, mainly on some ped faces and in pores; common very fine and few medium roots; very strongly acid (field pH 5.0); gradual, smooth boundary.
Bt2
50-70
Yellowish red to red (5-2.5YR4/6) clay; moderate medium and fine subangular blocky structure; broken and continuous moderately thick cutans, mainly on ped faces and in pores; few fine and medium roots; very strongly acid (field pH 4.5); gradual, smooth boundary.
Bt3
70-110+
Yellowish red (5YR4/8) clay; moderate medium and fine subangular blocky structure; broken and continuous moderately thick cutans, mainly on ped faces and in pores; few small rounded grains of greenish rock; few very fine roots; very strongly acid (field pH 4.5).