Category

Soluble salts (dS/m or mmho/cm)

pH

Sand (%)

Silt (%)

Clay (%)

Texture class*

Organic Matter (%)

% Coarse fragments (> 2 mm in diameter)**

Sodium Adsorption Ratio (SAR)*

Ideal

<2

5.5 to 7.5

<70

<70

<30

L, SiL

≥2.0

≤2

<3 for any texture

Acceptable

<4

5.0 to 8.2

<70

<70

<30

SCL, SL, CL, SiCL

≥1.0

2.1 to 5.0

3 to 7 (SiL, SiCL, CL) 3 to 10 (SCL, SL, L)

Unacceptable

>4

<5.0 or >8.2

>70

>70

>30

LS, SC, SiC, S, Si, C

<1.0

> 5.0

> 10 for any texture