. 2024 Apr 22;24:304. doi: 10.1186/s12870-024-04957-1

Table 6.

Impact of the food-biochar application on the soil’s nutrient levels under salinity stress

Plant	Treatments	Humus (%)	Potassium (mg/kg)	Phosphorus (mg/kg)	Nitrogen (mg/kg)
Medicago sativa	Control	0.08 ± 0.01^e	51.31 ± 0.25^d	5.23 ± 0.01^b	4 ± 0.02^b
Medicago sativa	Biochar	0.15 ± 0.01^c	53.27 ± 0.66^c	6.60 ± 0.05^a	5.01 ± 0.02^a
Amaranthus caudatus	Control	0.11 ± 0.01^e	56.2 ± 1.35^b	3.02 ± 0.05^e	3.21 ± 0.01^d
Amaranthus caudatus	Biochar	0.13 ± 0.01^d	66.8 ± 0.36^a	3.56 ± 0.09^d	3.96 ± 0.01^c
Zea mays	Control	0.19 ± 0.01^b	52.3 ± 2^cd	3.41 ± 0.01^d	2.76 ± 0.01^d
Zea mays	Biochar	0.24 ± 0.01^a	67 ± 0.88^a	3.81 ± 0.05^c	2.97 ± 0.06^d

*Significant at p < 0.05, ** significant at p < 0.01, *** significant at p < 0.001; ns, non-significant at p > 0.05 according to two way ANOVA. a, b Means followed by different letters vertically (in the same column) are significantly different according to DMRTs