Table 8.

Multivariate exploration of variance was conducted to assess the effect of food-biochar treatments on several physiological attributes of different plants

Variables	Corrected-model		Plants		Treatments		Plant * Treatment
	F	p-value	F	P-value	F	P-value	F	P-value
Plants height	72	< 0.01***	89.2	< 0.01***	149.1	< 0.01***	14.1	< 0.01***
Root fresh weight	67.9	< 0.01***	138.8	< 0.01***	59.2	< 0.01***	0.8	0.506ns
Shoot fresh weight	919.2	< 0.01***	1924.3	< 0.01***	551.3	< 0.01***	90.0	< 0.01***
Allocation of biomass	7.7	0.004**	16.7	< 0.01***	0.5	0.555ns	0.8	0.513ns
Total length	6362	< 0.01***	12601.2	< 0.01***	3489.7	< 0.01***	2249.2	< 0.01***
Total surface area	493.8	< 0.01***	1121.3	< 0.01***	218.6	< 0.01***	82.6	< 0.01***
Total projected area	576.3	< 0.01***	1473.2	< 0.01***	139.8	< 0.01***	24.1	< 0.01***
Root diameter	47	< 0.01***	25.9	< 0.01***	169.9	< 0.01***	1.5	0.273ns
Root volume	331.4	< 0.01***	691.2	< 0.01***	250.1	< 0.01***	7.1	0.012*
Total chlorophyll	1321.2	< 0.01***	3012.2	< 0.01***	53.9	< 0.01***	14.1	< 0.01***
Chlorophyll a	466.3	< 0.01***	1330.4	< 0.01***	20	< 0.01***	0.8	0.440ns
Chlorophyll b	831.2	< 0.01***	2110.1	< 0.01***	109.3	< 0.01***	1.3	0.291ns
Carotenoids	308.4	< 0.01***	701.6	< 0.01***	150.1	< 0.01***	14.2	< 0.01***
Relative water content	5.1	0.017*	9.4	0.003*	2.2	0.182ns	0.3	0.792ns
Urease	59.9	< 0.01***	37.9	< 0.01***	169.4	< 0.01***	24	< 0.01***
Invertase	230.1	< 0.01***	571.3	< 0.01***	21	< 0.01***	0.8	0.440ns
catalase	589.3	< 0.01***	1397.8	< 0.01***	70	< 0.01***	0.9	0.439ns
Potassium	244.1	< 0.01***	324.3	< 0.01***	446	< 0.01***	64.9	< 0.01***
Phosphorus	800.3	< 0.01***	1893.4	< 0.01***	180.3	< 0.01***	12	< 0.01***
Nitrogen	52.8	< 0.01***	106.3	< 0.01***	55	< 0.01***	0	> 0.999ns
Humus	27	< 0.01***	8.9	0.004**	97.1	< 0.01***	8.9	0.004**

*Significant at p < 0.05, ** significant at p < 0.01, *** significant at p < 0.001; ns, non-significant at p > 0.05 rendering to MANOVA