Table 1 Selected properties of the poultry litter (PL) and the biochar-based fertilizer (BBF)

pH

10.52 ± 0.03

8.10 ± 0.01^a

Electrical conductivity (dS m⁻¹)

2.10 ± 0.07

4.03 ± 0.04

CEC* (cmol_c kg⁻¹)

9.66 ± 1.27

–

Carbon (%)

22.95 ± 0.04

36.10 ± 0.18^a

P₂O₅ total (g kg⁻¹)

265 ± 2.67

35.7 ± 0.89^a

P₂O₅ NAC** soluble (g kg⁻¹)

58.0 ± 0.29

–

P₂O₅ citric acid (g kg⁻¹)

59.0 ± 1.20

–

P₂O₅ water-soluble (g kg⁻¹)

0.60 ± 0.09

–

Ca (g kg⁻¹)

273.6 ± 3.9

18.63 ± 0.60

Mg (g kg⁻¹)

6.88 ± 0.15

5.4 ± 0.20 ^a

K (g kg⁻¹)

20.85 ± 0.75

23.99 ± 1.42

Al (g kg⁻¹)

0.35 ± 0.01

–

Fe (g kg⁻¹)

5.38 ± 0.06

26.88 ± 5.57