pH

Organic matter

Clay

(<2 µm)

Silt

(2 - 20 µm)

Sand

(>20 µm)

Commercial soil

7.2

9%

9%

34%

48%

Mollisol

5.8

5%

56%

9%

30%

Oxisol

3.9

8%

42%

3%

47%