Properties

Red River soil

Glenhope soil

pH

7.6

7.8

EC (mS∙m−1)

501

254

FMC (g∙g−1)

25

17

NO 3 -N (mg∙kg−1)

32

4

NH 4 + -N (mg∙kg−1)

8

8

Available P (mg∙kg−1)

32

13

Exchangeable Ca (cmol∙kg−1)

11.9

4.9

Mg (cmol∙kg−1)

4.4

1.2

K (cmol∙kg−1)

2

1

Na (cmol∙kg−1)

0.4

0.3

CEC (cmol∙kg−1)

46.8

19

Sand (%)

6

83

Silt"

25

9

Clay"

69

8

Textural class

Clay

Loamy sand