Classification standards

SOM

(g/kg)

TN

(g/kg)

TP

(g/kg)

TK

(g/kg)

pH < 7.0

pH > 7.0

X_a

6

0.75

0.2

5

4.5

7

X_c

20

1

0.6

10

5.5

8

X_p

30

1.5

1

15

6.5

9