Biochar as a soil conditioner for common bean plants

Biochar is a carbon-rich material produced during organic waste pyrolysis. In this context, two experiments were performed to evaluate the effect of biochar from rice husks and cattle manure on soil fertility common bean production, as well identify optimal dose be applied. The first experiment (Experiment I) was conducted according completely randomized design (factorial scheme 2 × + 1) with six replicates: types (cattle husk biochar), without acidity correction [addition calcium carbonate magnesium (PA) in proportion 4:1 (Ca:Mg) raise base saturation 60%], or addition 120 mg dm-3 phosphorus (P) ammonium phosphate, control treatment (without biochar, correction, P). Based results Experiment I, second design, five treatments (doses manure) four replications. Rice conditioner chemical properties, had less prominent effects than biochar. Cattle functioned corrective for source nutrients (mainly phosphorus). corresponding 5.46% volume led maximum grain production by plants.