ѵԢͧشԹѴ


͸ԺԹ
ͪشԹ  :  觵ͧ  Pong Thong (Po)
 
 
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A
0-7
Very dark grayish brown (10YR3/2); clay loam, (slightly gritty); moderate medium and fine subangular blocky structure; friable, slightly sticky, slightly plastic; few fine angular quartz gravels; many medium and fine roots; medium acid (field pH 6.0); abrupt, irregular boundary.
BA
7-23
Dark reddish brown (5YR3/3); gravelly clay loam moderate medium and fine subangular blocky structure; friable, sticky, plastic; many very fine angular quartz gravels; many medium roots; medium acid (field pH 6.0); clear, smooth boundary.
Bt1
23-47
Dark reddish brown (5YR3/3) gravelly clay; moderate medium and fine subangular blocky structure; sticky, slightly plastic; moderately thick clay coatings on ped faces; patchy thick clay coatings in pores; many fine angular quartz fragments up to 1 cm in diameter; many medium and very fine roots; very strongly acid (field pH 4.5); gradual, smooth boundary.
Bt2
47-62
Yellowish red (5YR4/8), very gravelly clay; many medium faint dark reddish brown (5YR3/4) spots; moderate fine and medium subangular blocky structure; sticky, slightly plastic; moderately thick clay coatings on ped faces and in pores respectively; very frequent fine angular quartz gravels; few fine and medium roots; very strongly acid (field pH 4.5); clear, wavy boundary.
Bt3
62-88
Red (2.5YR4/6); fine gravelly clay; massive to weak medium subangular blocky structure; firm in places, friable when dug out, sticky, nonplastic; many angular quartz fragments (0.1 to 1.5 cm diameter); few fine roots; strongly acid (field pH 5.5); clear, wavy boundary.
Bt4
88-145+
Red (2.5YR4/6); fine gravelly clay; massive to weak subangular blocky structure, firm in places and friable when dug out; patchy moderately thick clay coatings on ped faces,; many fine angular quartz fragments (0.5 to 1.5 cm diameter); few fine roots; strongly acid (field pH 5.5).