. 2021 Feb 3;7(2):e06074. doi: 10.1016/j.heliyon.2021.e06074

Table 3.

Interaction effects of compost and mineral fertilizers on selected soil properties.

Compost (t ha⁻¹)	Urea/NPSB (kg ha⁻¹)	BD (g cm⁻¹)	pH (H₂O)	OC (%)	TN (%)	AP (mg kg⁻¹)	AS (mg kg⁻¹)	Exchangeable bases (Cmol (₊) kg⁻¹)					CEC (Cmol (₊) kg⁻¹)
Compost (t ha⁻¹)	Urea/NPSB (kg ha⁻¹)	BD (g cm⁻¹)	pH (H₂O)	OC (%)	TN (%)	AP (mg kg⁻¹)	AS (mg kg⁻¹)	Ca	Mg	K		Na	CEC (Cmol (₊) kg⁻¹)
0	0/0	1.37^a	5.52^e	1.45^e	0.10^f	3.92^g	10.82^g	14.10^e	5.40	0.45	0.07			30.02^cd
	50/50	1.35^b	5.48^f	1.43^ef	0.12^e	5.08^f	11.32^f	13.90^f	5.35	0.40	0.06			29.62^de
	100/100	1.34^b	5.45^g	1.41^f	0.13^e	5.79^de	12.13^e	13.85^f	5.32	0.36	0.05			28.96^e
5	0/0	1.26^c	5.58^c	1.65^d	0.15^d	4.35^g	11.95^e	14.58^d	5.63	0.49	0.09			30.64^bc
	50/50	1.27^c	5.56^cd	1.67^cd	0.16^cd	6.15^d	13.15^d	14.61^bc	5.62	0.52	0.08			30.71^bc
	100/100	1.25^cd	5.55^d	1.71^c	0.18^c	7.48^c	13.40^cd	14.64^bcd	5.65	0.55	0.09			31.09^b
10	0/0	1.22^f	5.68^a	1.89^b	0.17^c	5.65^e	13.68^bc	14.71^abc	5.74	0.64	0.10			32.68^a
	50/50	1.23^ef	5.66^ab	1.92^ab	0.19^b	9.04^b	13.76^b	14.75^ab	5.77	0.63	0.11			32.72^a
	100/100	1.24^de	5.65^b	1.96^a	0.22^a	10.90^a	14.15^a	14.80^a	5.76	0.65	0.10			33.07^a
F value		6.74	3.17	5.08	3.44	33.49	11.58	6.34	1.45	2.77	1.65			3.37
P value		0.002	0.042	0.007	0.032	0.001	0.001	0.003	0.264	0.063	0.212			0.035
LSD (0.05)		0.013	0.180	0.044	0.013	0.453	0.245	0.116	0.079	0.066	0.014			0.715
CV (%)		0.62	0.19	1.43	4.90	4.04	1.35	0.46	0.80	7.39	9.82			1.33

Means within a column followed by different letters are significantly different at p < 0.05. LSD = least significance difference, CV = coefficient of variation, ns = not significant.