Source of variation	P value
Source of variation	PH	AGR*_PH30-45	SD	AGR*_SD30-45	NL	AGR*_NL30-45	LA	AGR*_{LA 30-45}
Biochar (B)	0.0178	0.011	0.00	0.0009	0.000	0.0008	0.000	0.0005
Linear Regression	0.272	0.003	0.00	0.001	0.000	0.000	0.000	0.000
Quadratic Regression	0.006	0.732	0.001	0.820	0.060	0.189	0.032	0.314
Nitrogen (N)	0.5471	0.021	0.004	0.3147	0.4693	0.1590	0.439	0.474
Linear Regression	0.496	0.089	0.000	0.111	0.145	0.028	0.131	0.131
Quadratic Regression	0.458	0.015	0.640	0.471	0.607	0.708	0.670	0.965
Interaction (B × N)	0.5206	0.315	0.869	0.8631	0.5559	0.3052	0.786	0.664
CV (%)	11.20	8.78	7.54	1.72	18.18	9.50	18.64	16.00