Effects of Biochar Amendment on Tomato Bacterial Wilt Resistance and Soil Microbial Amount and Activity

Table 1

Basic properties of biochars used in the experiment.

Type	Feedstock	Temperature (°C)	pH	C (%)	N (%)	Available P (mg kg^−1)	Available K (mg kg^−1)	Ash (%)	C/N ratio (%)
BC1	Peanut shell	500 × 2 h	9.89	17.41	0.60	611.3	3872	70.70	29.02
BC2	Wheat straw	500 × 2 h	10.02	47.38	0.98	325.0	3820	47.60	48.35

Molar ratios, analyzed with an elemental analysis apparatus, vario TOC cube, Elementar Analysensysteme GmbH, Germany.
Mass % w/w analyzed by dry combustion in a muffle furnace at 600°C for 2 h.