Sole and Combined Application of Biodigestate, N, P, and K Fertilizers: Impacts on Soil Chemical Properties and Maize Performance

Table 3

Chemical characteristics of the soil after maize harvest.

	pH (water)	Ca (cmol·kg^−1)	Mg (cmol·kg^−1)	Na (cmol·kg^−1)	K (cmol·kg^−1)	Org C (%)	N (%)	P (mg kg^−1)
DN1	6.49ab	3.37e	2.87d	0.40b	0.16e	1.60d	0.20b	22.9c
DN2	6.56a	4.06b	3.11bc	0.50a	0.21d	1.95b	0.23a	24.2b
DP1	6.63a	3.38e	3.01c	0.46a	0.19d	1.65d	0.14d	25.6b
DP2	6.64a	3.66d	3.30b	0.50a	0.20d	1.77c	0.18c	27.7a
DK1	6.57a	3.11f	2.83d	0.48a	0.24c	1.73c	0.17c	22.6c
DK2	6.58a	4.01b	3.29b	0.51a	0.28b	1.88c	0.19b	23.9b
DN1P1K1	6.51a	3.80c	2.46d	0.43b	0.23c	1.80c	0.18c	24.3b
DN2P2K2	6.70a	4.51a	3.51a	0.51a	0.35a	2.22a	0.24a	28.3a
D only	6.45ab	2.66g	3.10c	0.51a	0.20d	2.07b	0.20b	22.7c
D0N0P0K0 (control)	5.99c	2.44h	2.02e	0.24c	0.14f	1.51e	0.12e	3.31d

Values followed by similar letters under the same column are not significantly different at according to Duncan’s multiple range test.