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Table 2 The content of macro-elements in the non-activated (NB) and aged (AB) biochar

From: Assessing the potential of biochar aged by humic substances to enhance plant growth and soil biological activity

  C (%) N (%) H (%) O (%) C:N H:C O:C
NB 48.71 ± 0.83 1.11 ± 0.01 1.55 ± 0.09 17.27 ± 0.17 43.88 ± 0.95 0.032 ± 0.002 0.355 ± 0.007
AB 52.43 ± 0.36** 1.36 ± 0.11* 1.73 ± 0.04 15.80 ± 0.12*** 38.55 ± 3.40*** 0.033 ± 0.001 0.301 ± 0.003***
  1. Mean values ± standard deviation (SD). Statistical difference at the level: *p < 0.05, **p < 0.01, ***p < 0.001