Table 4 Impact of biochar on growth parameters of Zea mays, Amaranthus caudatus, and Medicago sativa under salt stress conditions

Medicago sativa

Control

16.02 ± 1.61^d

0.04 ± 0.01^e

0.05 ± 0.01^e

1.51 ± 0.34^a

Biochar

20.23 ± 0.10^b

0.05 ± 0.01^d

0.07 ± 0.02^c

1.46 ± 0.04^a

Amaranthus caudatus

Control

14.39 ± 1.49^e

0.08 ± 0.01^b

0.12 ± 0.01^b

1.57 ± 0.09^a

Biochar

17.04 ± 0.91^cd

0.11 ± 0.01^a

0.18 ± 0.02^a

1.81 ± 0.03^a

Zea mays

Control

19.12 ± 1.01^c

0.05 ± 0.01^d

0.05 ± 0.01^e

0.77 ± 0.03^b

Biochar

27.43 ± 0.52^a

0.07 ± 0.01^c

0.07 ± 0.02^d

0.77 ± 0.02^b