. 2022 May 13;11(10):1301. doi: 10.3390/plants11101301

Table 4.

Effect of SWB on the nutrient concentrations in plant shoots.

Biochar Rates (g kg⁻¹)	N (%)	P (%)	K (%)	Ca (%)	Na (%)	Cl (%)	K/Na
0	1.5 ± 0.1 ^b	0.18 ± 0.04 ^b	1.7 ± 0.1 ^b	1.0 ± 0.1 ^b	1.38 ± 0.07 ^a	0.21 ± 0.07 ^a	1.23 ± 0.07 ^b
5	3.1 ± 0.1 ^a	0.31 ± 0.05 ^a	2.7 ± 0.2 ^a	2.3 ± 0.2 ^a	1.25 ± 0.03 ^b	0.15 ± 0.03 ^b	2.16 ± 0.07 ^a
10	3.3 ± 0.2 ^a	0.35 ± 0.06 ^a	2.8 ± 0.1 ^a	2.5 ± 0.3 ^a	1.22 ± 0.01 ^c	0.12 ± 0.01 ^c	2.30 ± 0.07 ^a
15	3.4 ± 0.1 ^a	0.34 ± 0.07 ^a	2.8 ± 0.2 ^a	2.7 ± 0.3 ^a	1.11 ± 0.04 ^c	0.13 ± 0.04 ^c	2.52 ± 0.07 ^a
20	3.7 ± 0.2 ^a	0.38 ± 0.09 ^a	3.0 ± 0.1 ^a	2.8 ± 0.2 ^a	1.10 ± 0.01 ^c	0.09 ± 0.01 ^c	2.73 ± 0.07 ^a
25	3.5 ± 0.2 ^a	0.39 ± 0.05 ^a	3.3 ± 0.1 ^a	2.8 ± 0.3 ^a	1.00 ± 0.05 ^c	0.07 ± 0.05 ^c	3.30 ± 0.07 ^a

Means (±SE) followed by different letters are significantly different according Tukey’s test (p ≤ 0.05).