. 2021 Apr 20;28(7):3965–3971. doi: 10.1016/j.sjbs.2021.04.016

Table 3.

Effects of rice husk biochar treatments produced at different pyrolysis temperatures on shoot matter dry matter yield, Cd concentrations and Cd content of tobacco plant under increasing Cd doses.

Biochar Treatment	Cd Dose (mg kg⁻¹)	Shoot Dry matter (g plant⁻¹)	Shoot Cd concentration (mg kg⁻¹)	Shoot Cd content (µg plant⁻¹)
Non-biochar	0	5,02^a	1,07^c	5,39^c
	2.5	4,39^c	59,1^b	259,3^b
	5	4,64^b	90,5^a	419,7^a
*Mean*		*4,68^C*	*50,2^A*	*228,1^A*
Rice husk RB400	0	6,46^a	0,42^c	2,73^c
	2.5	4,55^b	54,0^b	245, 8^b
	5	4,54^b	77,0^a	349,2^a
*Mean*		*5,18^A*	*43,8^B*	*199,2^B*
Rice husk RB500	0	5,21^a	0,55^c	2,85^c
	2.5	4,98^b	48,5^b	241,3^b
	5	4,70^c	72,3^a	340,1^a
*Mean*		*4,97^B*	*40,5^BC*	*194,7^B*
Rice husk RB600	0	5,94^a	0,60^c	3,59^c
	2.5	3,83^b	45,0^b	172,1^b
	5	3,67^b	70,2^a	257,7^a
*Mean*		*4,48^D*	*38,6^C*	*144,5^C*

The means indicated with the same capital letter in the same column are not significantly different (p < 0.05).

The means indicated with the same small letter in the same column are not significantly different (p < 0.05).