Table 2 Effect of nZnO & BC on NO3– N, NH4+-N and mineral N.

From: Toxicity of biogenic zinc oxide nanoparticles to soil organic matter cycling and their interaction with rice-straw derived biochar

64 Days of incubation

Treatments

NO3– N µg g−1 soil

NH4+-N µg g−1 soil

Mineral N

Control

17.5 (3.6)cd*

0.01 (0.0)a

17.5 (3.6)de

1% BC

18.3 (4.0)bc

0.05 (0.01)a

18.4 (4.0)cde

5% BC

19.3 (3.0)abcd

0.06 (0.03)a

19.4 (3.0)bcde

100 nZnO

24.8 (1.0)ab

0.06 (0.02)a

24.9 (1.0)ab

100 nZnO, 1% BC

25.8 (0.6)a

0.04 (0.01)a

25.8 (0.6)a

100 nZnO, 5% BC

24.2 (0.4)ab

0.05 (0.01)a

24.3 (0.4)abc

1000 nZnO

17.2 (0.5)d

0.03 (0.01)a

17.2 (0.5)e

1000 nZnO, 1% BC

14.6 (1.2)d

0.04 (0.0)a

14.6 (1.2)e

1000 nZnO, 5% BC

23.9 (1.7)abc

0.03 (0.01)a

23.9 (1.7)abcd

  1. Different letters within a column indicate significant difference between means at 95% confidence interval. The brackets contain standard errors of means (n = 3).
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