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ͪشԹ  :  Ҫ  Ratchaburi (Rb)
 
 
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Apg1
0-16/21
Dark brown (10YR3/3) clay; common fine discinct brown to dark brown(7.5YR4/4) along root channels and few fine prominent yellowish red(5YR4/6) mottles on ped faces; moderate coarse subangular blocky structure; very hard, firm, sticky, plastic; many very fine and fine roots; strongly acid (field pH 5.5); clear, wavy boundary.
Apg2
16/21-41
Dark grayish brown (10YR4/2) clay; common fine faint dark yellowish brown (10YR4/4) mottles; moderate coarse subangular blocky structure; firm, sticky, plastic; few very fine roots; few spots of charcoal; neutral (field pH 7.0); gradual, smooth boundary.
BAg
41-63
Dark grayish brown (10YR4/2) clay; common fine faint dark yellowish brown(10YR4/4) mottles; moderate coarse subangular blocky structure; firm, sticky, plastic; few very fine roots; few hard and slightly hard iron and manganese nodules; neutral (field pH 7.0); gradual, smooth boundary
Bssg1
63-107
Dark grayish brown (10YR4/2) clay; common fine faint dark yellowish brown (10YR4/4) mottles; moderate coarse subangular blocky structure; firm, sticky, plastic; distinct slickenside; few soft hard and slightly hard iron and manganese nodules; mildly alkaline (field pH 7.5); gradual, smooth boundary
Bssg2
107-147
Dark brown to brown (7.5YR4/2) silty clay loam; many medium distinct dark yellowish brown (10YR4/4) and common fine distinct dark gray (10YR4/1) mottles; moderate coarse subangular blocky structure; firm, sticky, plastic; common spot of A material moved down along cracks and pores, few hard iron and manganese nodules; few very fine mica flakes; moderately alkaline (field pH 8.0); gradual, smooth boundary.
Bssg3
147-175+
Dark brown to brown (7.5YR4/2) silty clay loam; many medium and fine discinct brown to strong brown (7.5YR4/4-6) mottles; moderate coarse subangular blocky structure; firm, sticky, plastic; distinct slickenside; common spot of A material moved down along cracks and pores, few hard and slightly hard iron and manganese nodules; few very fine mica flakes; neutral (field pH 7.0).