Indicator

Weight

SOM (g∙kg−1)

0.14

TN (g∙kg−1)

0.15

AP (mg∙kg−1)

0.07

AK (mg∙kg−1)

0.10

EC (mS∙cm−1)

0.16

BD (g∙cm−3)

0.12

Clay %

0.10

pH

0.16