Field trial^a

Treatment

Excavation depth (cm)

Sand (%)^b

Silt

(%)^b

Clay

(%)^b

C_tot

(g∙kg⁻¹)

N_tot

(g∙kg⁻¹)

P (mg/100g)

DIK

P-

0 - 20

25

60

15

0.93

0.10

4.63

CKA

P+

0 - 20

8

77

15

1.04

0.11

9.55

CKA

all

45 - 75

4

69

27

0.49

0.06

1.72